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+    "distractor_1": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_204685.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7198185941043084,
+      "mixture_start": 1.3896276124761766,
+      "mixture_end": 2.109446206580485,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_1dist_040_rep1.json b/data/audio_mixtures_no_speech/train/airport_1dist_040_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..3497d6b60dc42969672f1fda401291ac9a2a74fc
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_040_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "airport_1dist_040_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "sneeze"
+  ],
+  "audio_file": "airport_1dist_040_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_074.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.545918367346939,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_014.mp3",
+      "origin_start": 122.75312925170068,
+      "origin_end": 132.75312925170067,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/val/sneeze/esc-50_4-171519-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6733786848072563,
+      "mixture_start": 4.4185569812056675,
+      "mixture_end": 5.091935666012924,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_1dist_043_rep4.json b/data/audio_mixtures_no_speech/train/airport_1dist_043_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..3dbc3c617d1f253ed0a4290dedfbdf913f68806d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_043_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "airport_1dist_043_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "fire_alarm"
+  ],
+  "audio_file": "airport_1dist_043_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_103.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.926938775510204,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Airport/asmr_Airport_ILBDMisz5K8_chunk_009.mp3",
+      "origin_start": 130.3278684807256,
+      "origin_end": 140.3278684807256,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 8.748412698412698,
+      "origin_end": 11.5659410430839,
+      "mixture_start": 3.4331590374652685,
+      "mixture_end": 6.250693856467347,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_1dist_046_rep2.json b/data/audio_mixtures_no_speech/train/airport_1dist_046_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..509f7ebcd31de4135f2ce377779c44f99d9b4154
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_046_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "airport_1dist_046_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "cough"
+  ],
+  "audio_file": "airport_1dist_046_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_406.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.0134467120181405,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_137oN5uUVyQ_chunk_002.mp3",
+      "origin_start": 231.26208616780045,
+      "origin_end": 241.26208616780045,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_46971.wav",
+      "origin_start": 0.09426303854875283,
+      "origin_end": 3.1449433106575966,
+      "mixture_start": 3.8479034052094145,
+      "mixture_end": 6.898601495439216,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_1dist_067_rep3.json b/data/audio_mixtures_no_speech/train/airport_1dist_067_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..6272ba6a8aa9c06fd5f77f0706491761ed300829
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_067_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "airport_1dist_067_rep3",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "glass_breaking"
+  ],
+  "audio_file": "airport_1dist_067_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_170.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9464625850340136,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_023.mp3",
+      "origin_start": 235.987052154195,
+      "origin_end": 245.987052154195,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_204142.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7546485260770975,
+      "mixture_start": 5.039186994285762,
+      "mixture_end": 5.79383552036286,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_1dist_070_rep4.json b/data/audio_mixtures_no_speech/train/airport_1dist_070_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..e5df8a755807085f9fd8198f2c4117876155dee2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_070_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "airport_1dist_070_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "cough"
+  ],
+  "audio_file": "airport_1dist_070_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p266/p266_307.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.868707482993197,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Airport/asmr_Airport_ILBDMisz5K8_chunk_009.mp3",
+      "origin_start": 285.48886621315194,
+      "origin_end": 295.48886621315194,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/fsd50k_331056.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5456689342403628,
+      "mixture_start": 4.662589358333174,
+      "mixture_end": 5.208258292573537,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_1dist_081_rep3.json b/data/audio_mixtures_no_speech/train/airport_1dist_081_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..4b0b7e9f4a3b4a7433b9f25009abe18313e7a896
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_081_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "airport_1dist_081_rep3",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "airport_1dist_081_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p264/p264_235.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.670997732426304,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_ILBDMisz5K8_chunk_004.mp3",
+      "origin_start": 274.44367346938776,
+      "origin_end": 284.44367346938776,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_144473.wav",
+      "origin_start": 0.891156462585034,
+      "origin_end": 3.3058503401360544,
+      "mixture_start": 3.7414156047511713,
+      "mixture_end": 6.156129049847351,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_1dist_086_rep2.json b/data/audio_mixtures_no_speech/train/airport_1dist_086_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..0fc8f302f1c34e0933d2c7c9dd6beae8790a59e7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_086_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "airport_1dist_086_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "airport_1dist_086_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p261/p261_055.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.31,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_137oN5uUVyQ_chunk_002.mp3",
+      "origin_start": 206.2561224489796,
+      "origin_end": 216.2561224489796,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_77392.wav",
+      "origin_start": 25.335918367346938,
+      "origin_end": 28.606689342403627,
+      "mixture_start": 3.147535248167525,
+      "mixture_end": 6.418306888615517,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_1dist_092_rep2.json b/data/audio_mixtures_no_speech/train/airport_1dist_092_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..f0ab146e2ce7fd9c78d7e8117f0b0592d8ced75a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_092_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "airport_1dist_092_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "cough"
+  ],
+  "audio_file": "airport_1dist_092_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p241/p241_185.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.655419501133787,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_000.mp3",
+      "origin_start": 8.832517006802721,
+      "origin_end": 18.83251700680272,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_19122.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5903854875283446,
+      "mixture_start": 7.091561745880218,
+      "mixture_end": 7.681947233408562,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_1dist_095_rep3.json b/data/audio_mixtures_no_speech/train/airport_1dist_095_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..b819be190a44d6f3c8ea636ca2fc1ed2cf9045fd
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_095_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "airport_1dist_095_rep3",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "jackhammer"
+  ],
+  "audio_file": "airport_1dist_095_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p241/p241_150.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.907210884353741,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_005.mp3",
+      "origin_start": 150.01181405895693,
+      "origin_end": 160.01181405895693,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386240.wav",
+      "origin_start": 2.8320861678004534,
+      "origin_end": 6.097913832199547,
+      "mixture_start": 3.221918809861527,
+      "mixture_end": 6.487747164189249,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_1dist_098_rep2.json b/data/audio_mixtures_no_speech/train/airport_1dist_098_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..3aea70e9ea93cdde8c8c103ba5d6ca5ba9c609e0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_098_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "airport_1dist_098_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "dog"
+  ],
+  "audio_file": "airport_1dist_098_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p243/p243_213.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.504625850340136,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Airport/asmr_Airport_ILBDMisz5K8_chunk_001.mp3",
+      "origin_start": 238.02269841269842,
+      "origin_end": 248.02269841269842,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_11722.wav",
+      "origin_start": 0.09061224489795919,
+      "origin_end": 2.1711791383219956,
+      "mixture_start": 0.3783404298946709,
+      "mixture_end": 2.458910518322943,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_2dist_125_rep1.json b/data/audio_mixtures_no_speech/train/airport_2dist_125_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..bf88898fa1231ca85535593f0648629f45f8ca66
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_125_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "airport_2dist_125_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "gunshot"
+  ],
+  "audio_file": "airport_2dist_125_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_131.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.6699319727891155,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_016.mp3",
+      "origin_start": 280.46621315192743,
+      "origin_end": 290.46621315192743,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/val/sneeze/fsd50k_184436.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6733786848072563,
+      "mixture_start": 7.7602098868260585,
+      "mixture_end": 8.433588571633315,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_35799.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7430385487528345,
+      "mixture_start": 4.252815676861002,
+      "mixture_end": 4.9958542256138365,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_2dist_132_rep3.json b/data/audio_mixtures_no_speech/train/airport_2dist_132_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..a01c05068eebd0efc8662e383eae4f7f01434a97
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_132_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "airport_2dist_132_rep3",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "footsteps",
+    "glass_breaking"
+  ],
+  "audio_file": "airport_2dist_132_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p240/p240_316.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.9689569160997733,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_137oN5uUVyQ_chunk_000.mp3",
+      "origin_start": 203.09231292517006,
+      "origin_end": 213.09231292517006,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_405114.wav",
+      "origin_start": 0.16585034013605443,
+      "origin_end": 3.402267573696145,
+      "mixture_start": 4.064054595585955,
+      "mixture_end": 7.3004738542825836,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_213161.wav",
+      "origin_start": 0.07215419501133787,
+      "origin_end": 2.2284126984126984,
+      "mixture_start": 6.928385732752656,
+      "mixture_end": 9.084662891629185,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_2dist_144_rep1.json b/data/audio_mixtures_no_speech/train/airport_2dist_144_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..40e8c2320fef452ccf0d154d41d78f5dd5add5b2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_144_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "airport_2dist_144_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "boom",
+    "footsteps"
+  ],
+  "audio_file": "airport_2dist_144_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_267.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.203764172335601,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_003.mp3",
+      "origin_start": 280.2300680272109,
+      "origin_end": 290.2300680272109,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_114047.wav",
+      "origin_start": 0.6670294784580499,
+      "origin_end": 4.168843537414966,
+      "mixture_start": 3.5460890913323397,
+      "mixture_end": 7.047915091000338,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_390583.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6153061224489796,
+      "mixture_start": 4.614889274260983,
+      "mixture_end": 5.230218072446924,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_2dist_147_rep4.json b/data/audio_mixtures_no_speech/train/airport_2dist_147_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..769bf16cff53004e3398a6d59e6b2ba1d7211882
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_147_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "airport_2dist_147_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "ringtone",
+    "computer_typing"
+  ],
+  "audio_file": "airport_2dist_147_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p264/p264_181.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.100770975056689,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_014.mp3",
+      "origin_start": 114.93868480725624,
+      "origin_end": 124.93868480725624,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_246390.wav",
+      "origin_start": 1.5898866213151928,
+      "origin_end": 3.7396825396825397,
+      "mixture_start": 2.488084001384043,
+      "mixture_end": 4.637883077917875,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/fsd50k_332000.wav",
+      "origin_start": 13.073696145124716,
+      "origin_end": 16.245079365079366,
+      "mixture_start": 4.112321034082652,
+      "mixture_end": 7.2837190254499316,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_2dist_155_rep2.json b/data/audio_mixtures_no_speech/train/airport_2dist_155_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..a7348f10d1883da14f47473a121dbaa30292e291
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_155_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "airport_2dist_155_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "siren"
+  ],
+  "audio_file": "airport_2dist_155_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_156.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.6743764172335602,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_ILBDMisz5K8_chunk_014.mp3",
+      "origin_start": 220.94807256235828,
+      "origin_end": 230.94807256235828,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_47274.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0216780045351475,
+      "mixture_start": 7.551084509662529,
+      "mixture_end": 8.572762514197677,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_3-51731-B-42.wav",
+      "origin_start": 2.7385714285714284,
+      "origin_end": 4.991814058956916,
+      "mixture_start": 2.0846553868648234,
+      "mixture_end": 4.337911063355557,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_2dist_164_rep1.json b/data/audio_mixtures_no_speech/train/airport_2dist_164_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..ac327ddc29987a5641f8861ece20ce632095d6df
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_164_rep1.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "airport_2dist_164_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "dog"
+  ],
+  "audio_file": "airport_2dist_164_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_137.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.4786167800453516,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_022.mp3",
+      "origin_start": 173.31,
+      "origin_end": 183.31,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/val/applause/fsd50k_241893.wav",
+      "origin_start": 9.088095238095239,
+      "origin_end": 11.554512471655329,
+      "mixture_start": 1.582597121231373,
+      "mixture_end": 4.049018760571999,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/esc-50_1-32318-A-0.wav",
+      "origin_start": 0.9600226757369614,
+      "origin_end": 4.441859410430839,
+      "mixture_start": 3.649194070389818,
+      "mixture_end": 7.1310358447654,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_2dist_173_rep1.json b/data/audio_mixtures_no_speech/train/airport_2dist_173_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..3d039c41fd7ae79cba4ad69e19d734d01f2fc922
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_173_rep1.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "airport_2dist_173_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "dog",
+    "hammer"
+  ],
+  "audio_file": "airport_2dist_173_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_215.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.097074829931973,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_016.mp3",
+      "origin_start": 136.82360544217687,
+      "origin_end": 146.82360544217687,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_147672.wav",
+      "origin_start": 0.03496598639455782,
+      "origin_end": 3.3672789115646258,
+      "mixture_start": 2.4287400794662637,
+      "mixture_end": 5.761056943992729,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_99964.wav",
+      "origin_start": 0.41965986394557825,
+      "origin_end": 2.7313378684807255,
+      "mixture_start": 6.569017161677882,
+      "mixture_end": 8.88070337357947,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_2dist_188_rep3.json b/data/audio_mixtures_no_speech/train/airport_2dist_188_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..3cece782b664eb99841e4209d6c6fe8e31ad7a94
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_188_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "airport_2dist_188_rep3",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "ringtone"
+  ],
+  "audio_file": "airport_2dist_188_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p281/p281_234.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.90952380952381,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_ILBDMisz5K8_chunk_005.mp3",
+      "origin_start": 98.79052154195011,
+      "origin_end": 108.79052154195011,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_326730.wav",
+      "origin_start": 4.15031746031746,
+      "origin_end": 7.9622675736961455,
+      "mixture_start": 0.9703080036493281,
+      "mixture_end": 4.782260805102667,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_246390.wav",
+      "origin_start": 7.187006802721088,
+      "origin_end": 9.594081632653062,
+      "mixture_start": 6.354151733601997,
+      "mixture_end": 8.761227866420684,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_2dist_191_rep1.json b/data/audio_mixtures_no_speech/train/airport_2dist_191_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..5cba9b522519a67441c92e0b614aa223c1e8c8aa
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_191_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "airport_2dist_191_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "gunshot"
+  ],
+  "audio_file": "airport_2dist_191_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_114.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.1782993197278913,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_015.mp3",
+      "origin_start": 14.105532879818593,
+      "origin_end": 24.105532879818593,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_179832.wav",
+      "origin_start": 1.867392290249433,
+      "origin_end": 5.20609977324263,
+      "mixture_start": 5.766041253968031,
+      "mixture_end": 9.104758525016944,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_32799.wav",
+      "origin_start": 0.21979591836734694,
+      "origin_end": 2.4975510204081632,
+      "mixture_start": 0.15295800890889774,
+      "mixture_end": 2.430726863479538,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_2dist_191_rep4.json b/data/audio_mixtures_no_speech/train/airport_2dist_191_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..c681d7e4bc95ceb8f403a82b25e6baa04f9763d5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_191_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "airport_2dist_191_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "gunshot"
+  ],
+  "audio_file": "airport_2dist_191_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p280/p280_196.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8170521541950113,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_005.mp3",
+      "origin_start": 79.20049886621315,
+      "origin_end": 89.20049886621315,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/esc-50_1-22694-B-20.wav",
+      "origin_start": 0.09326530612244897,
+      "origin_end": 2.946780045351474,
+      "mixture_start": 6.0488541148656445,
+      "mixture_end": 8.902370219784805,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_257874.wav",
+      "origin_start": 0.00764172335600907,
+      "origin_end": 2.3248072562358275,
+      "mixture_start": 2.402261359426897,
+      "mixture_end": 4.71942780152898,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_201_rep2.json b/data/audio_mixtures_no_speech/train/airport_3dist_201_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..be1f5a44c5c82ab262975a6cdedbd60bbc2472a8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_201_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_201_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "boom",
+    "dog"
+  ],
+  "audio_file": "airport_3dist_201_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p264/p264_242.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.252494331065759,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_017.mp3",
+      "origin_start": 166.85548752834467,
+      "origin_end": 176.85548752834467,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_2-130978-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6501587301587302,
+      "mixture_start": 4.276939914146794,
+      "mixture_end": 4.9270986443055245,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_349131.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1609977324263039,
+      "mixture_start": 2.6123270471191655,
+      "mixture_end": 3.7733247795454696,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_254191.wav",
+      "origin_start": 0.4406122448979592,
+      "origin_end": 2.7022902494331067,
+      "mixture_start": 4.022252422908865,
+      "mixture_end": 6.283940581770817,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and boom and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and boom and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and dog and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep sneeze and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep sneeze and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove sneeze and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove sneeze and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove boom and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_205_rep2.json b/data/audio_mixtures_no_speech/train/airport_3dist_205_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..c2805f7a5be97f1403dcb72931c43658434d72bb
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_205_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "airport_3dist_205_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "fire_alarm",
+    "glass_breaking"
+  ],
+  "audio_file": "airport_3dist_205_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p236/p236_327.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.60718820861678,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_007.mp3",
+      "origin_start": 108.13097505668934,
+      "origin_end": 118.13097505668934,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_130977.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7314285714285714,
+      "mixture_start": 5.30552209719107,
+      "mixture_end": 6.0369506686196415,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 6.939138321995465,
+      "origin_end": 9.327233560090702,
+      "mixture_start": 5.293351197833003,
+      "mixture_end": 7.681449905011929,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_71897.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6950566893424037,
+      "mixture_start": 0.7301792604064345,
+      "mixture_end": 2.4252359497488385,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and fire alarm and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and fire alarm and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and glass breaking and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep sneeze and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and fire alarm and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and fire alarm and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove sneeze and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and glass breaking and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_206_rep3.json b/data/audio_mixtures_no_speech/train/airport_3dist_206_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..6174ee091185fa0fd50205d12f87ed708ae52d78
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_206_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_206_rep3",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "drill",
+    "baby_cry"
+  ],
+  "audio_file": "airport_3dist_206_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_002.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.9698185941043085,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_013.mp3",
+      "origin_start": 19.798843537414967,
+      "origin_end": 29.798843537414967,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_65514.wav",
+      "origin_start": 0.12634920634920635,
+      "origin_end": 2.504580498866213,
+      "mixture_start": 5.147802836337012,
+      "mixture_end": 7.5260356676964335,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_96158.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1493877551020408,
+      "mixture_start": 8.227877447008506,
+      "mixture_end": 9.377265202110546,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_332162.wav",
+      "origin_start": 2.073673469387755,
+      "origin_end": 5.760045351473923,
+      "mixture_start": 0.4018153189040384,
+      "mixture_end": 4.088203599503942,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and drill",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and drill and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "drill",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and drill and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "drill",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove drill and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep drill and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "baby_cry"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and baby cry and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and drill and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cellphone buzz vibrating alert and drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove cellphone buzz vibrating alert and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and baby cry and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_207_rep2.json b/data/audio_mixtures_no_speech/train/airport_3dist_207_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..c687eb2a57bce2dd0f9f54387ad2a97b7f4aebbf
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_207_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_207_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "alarm_clock",
+    "boom"
+  ],
+  "audio_file": "airport_3dist_207_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_391.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.390952380952381,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_137oN5uUVyQ_chunk_004.mp3",
+      "origin_start": 76.21666666666667,
+      "origin_end": 86.21666666666667,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_157297.wav",
+      "origin_start": 0.894467120181406,
+      "origin_end": 2.993469387755102,
+      "mixture_start": 5.811431010961827,
+      "mixture_end": 7.910445028032007,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/val/alarm_clock/esc-50_4-189332-A-37.wav",
+      "origin_start": 2.14702947845805,
+      "origin_end": 4.9655555555555555,
+      "mixture_start": 2.0700022925181623,
+      "mixture_end": 4.888533142429059,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_401628.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8692063492063493,
+      "mixture_start": 7.538998794545485,
+      "mixture_end": 9.408205143751834,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and alarm clock and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and alarm clock and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep alarm clock and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep sneeze and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and alarm clock and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and alarm clock and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove sneeze and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove alarm clock and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_218_rep2.json b/data/audio_mixtures_no_speech/train/airport_3dist_218_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..064e2b3240b5ea83d2a6b3d4bd6f700a929b29df
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_218_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_218_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "footsteps",
+    "jackhammer",
+    "siren"
+  ],
+  "audio_file": "airport_3dist_218_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p264/p264_065.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.4605442176870747,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_ILBDMisz5K8_chunk_007.mp3",
+      "origin_start": 44.56922902494331,
+      "origin_end": 54.56922902494331,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_331703.wav",
+      "origin_start": 0.020272108843537414,
+      "origin_end": 2.526190476190476,
+      "mixture_start": 6.452741571028196,
+      "mixture_end": 8.958669197176793,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386241.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.626938775510204,
+      "mixture_start": 5.364105422818927,
+      "mixture_end": 5.991044198329131,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-70938-A-42.wav",
+      "origin_start": 0.4345124716553288,
+      "origin_end": 2.701972789115646,
+      "mixture_start": 0.5047278446741518,
+      "mixture_end": 2.7721892239123727,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and jackhammer and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "jackhammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "jackhammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and siren and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep footsteps and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove footsteps and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove footsteps and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and siren and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_225_rep1.json b/data/audio_mixtures_no_speech/train/airport_3dist_225_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..73f73baed85da09dacb507c53b51120f88383457
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_225_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_225_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "drill",
+    "siren"
+  ],
+  "audio_file": "airport_3dist_225_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_155.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.4569160997732427,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_015.mp3",
+      "origin_start": 89.94102040816327,
+      "origin_end": 99.94102040816327,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_108510.wav",
+      "origin_start": 4.2378004535147396,
+      "origin_end": 6.873015873015873,
+      "mixture_start": 6.094888502911064,
+      "mixture_end": 8.730122451472042,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_236327.wav",
+      "origin_start": 0.009727891156462585,
+      "origin_end": 2.0655102040816327,
+      "mixture_start": 4.283133106504449,
+      "mixture_end": 6.338917919492985,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_377126.wav",
+      "origin_start": 6.045827664399093,
+      "origin_end": 8.056462585034014,
+      "mixture_start": 3.1051624034781304,
+      "mixture_end": 5.11581477034828,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and drill and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "drill",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and drill and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "drill",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and siren and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and siren and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and drill and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and drill and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and siren and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove drill and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_229_rep1.json b/data/audio_mixtures_no_speech/train/airport_3dist_229_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..a546b2df3ea3458708c61f5a4e0056aa7c7b9314
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_229_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_229_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "footsteps",
+    "jackhammer"
+  ],
+  "audio_file": "airport_3dist_229_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_279.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6056916099773244,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_000.mp3",
+      "origin_start": 149.12260770975055,
+      "origin_end": 159.12260770975055,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_369841.wav",
+      "origin_start": 3.688548752834467,
+      "origin_end": 7.428548752834467,
+      "mixture_start": 2.105501323627402,
+      "mixture_end": 5.8455015425919346,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_406678.wav",
+      "origin_start": 0.20564625850340135,
+      "origin_end": 2.4199319727891155,
+      "mixture_start": 7.693873558248122,
+      "mixture_end": 9.908175154566498,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386303.wav",
+      "origin_start": 4.503968253968254,
+      "origin_end": 7.785147392290249,
+      "mixture_start": 5.128405519930273,
+      "mixture_end": 8.409587650060788,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and footsteps and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and footsteps and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and jackhammer and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and footsteps and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cellphone buzz vibrating alert and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and jackhammer and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and jackhammer and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_229_rep4.json b/data/audio_mixtures_no_speech/train/airport_3dist_229_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..d83d31b9f2de9c61e942df5516f4bf87ed64a322
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_229_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_229_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "footsteps",
+    "jackhammer"
+  ],
+  "audio_file": "airport_3dist_229_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p243/p243_290.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.90702947845805,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_008.mp3",
+      "origin_start": 29.48560090702948,
+      "origin_end": 39.48560090702948,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_212531.wav",
+      "origin_start": 0.0014285714285714286,
+      "origin_end": 3.8379591836734694,
+      "mixture_start": 1.2516448956215864,
+      "mixture_end": 5.0881790787777526,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_213307.wav",
+      "origin_start": 3.4509523809523808,
+      "origin_end": 6.41063492063492,
+      "mixture_start": 4.592258545508844,
+      "mixture_end": 7.551952077099248,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_273697.wav",
+      "origin_start": 3.5695691609977325,
+      "origin_end": 5.646303854875283,
+      "mixture_start": 7.068701336080783,
+      "mixture_end": 9.14545073445471,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and footsteps and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and footsteps and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and jackhammer and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and footsteps and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cellphone buzz vibrating alert and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and jackhammer and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and jackhammer and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_231_rep3.json b/data/audio_mixtures_no_speech/train/airport_3dist_231_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..546d38b4b08cc44ea94950e006c816a00dc854f6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_231_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "airport_3dist_231_rep3",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "alarm_clock",
+    "fire_alarm"
+  ],
+  "audio_file": "airport_3dist_231_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p281/p281_407.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8016326530612243,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_001.mp3",
+      "origin_start": 208.6495918367347,
+      "origin_end": 218.6495918367347,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_369842.wav",
+      "origin_start": 0.0864625850340136,
+      "origin_end": 2.919047619047619,
+      "mixture_start": 3.664670762731662,
+      "mixture_end": 6.497261876802904,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_1-14262-A-37.wav",
+      "origin_start": 1.9127437641723355,
+      "origin_end": 4.010430839002267,
+      "mixture_start": 7.509532773915001,
+      "mixture_end": 9.607229590918203,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_124734.wav",
+      "origin_start": 3.6963492063492063,
+      "origin_end": 6.499750566893424,
+      "mixture_start": 1.632599426993886,
+      "mixture_end": 4.436012500406006,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and alarm clock and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and alarm clock and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and fire alarm and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep cellphone buzz vibrating alert and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep cellphone buzz vibrating alert and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove cellphone buzz vibrating alert and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and fire alarm and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove alarm clock and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_236_rep4.json b/data/audio_mixtures_no_speech/train/airport_3dist_236_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..b7e3b1db1552f1389df5376905f4d629b8b09a1c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_236_rep4.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "airport_3dist_236_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "dog",
+    "slam"
+  ],
+  "audio_file": "airport_3dist_236_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_156.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.09718820861678,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_137oN5uUVyQ_chunk_003.mp3",
+      "origin_start": 28.63315192743764,
+      "origin_end": 38.633151927437645,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_3-141684-A-21.wav",
+      "origin_start": 0.36140589569160997,
+      "origin_end": 3.0169614512471656,
+      "mixture_start": 0.5129830529800801,
+      "mixture_end": 3.1685417844605137,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_95532.wav",
+      "origin_start": 3.6157142857142857,
+      "origin_end": 5.999863945578231,
+      "mixture_start": 6.891023527272366,
+      "mixture_end": 9.275192379970441,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_160612.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6486167800453515,
+      "mixture_start": 4.7841666920550505,
+      "mixture_end": 6.432783472100402,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and dog and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and dog and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "dog",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep slam and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep dog and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and slam and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep sneeze and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep sneeze and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove sneeze and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and remove sneeze and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and slam and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_243_rep1.json b/data/audio_mixtures_no_speech/train/airport_3dist_243_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..ab33eefc0847c218124bcaa7bdca673de2a89849
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_243_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "airport_3dist_243_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "fire_alarm",
+    "gunshot"
+  ],
+  "audio_file": "airport_3dist_243_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p271/p271_170.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.977573696145125,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_016.mp3",
+      "origin_start": 235.65986394557822,
+      "origin_end": 245.65986394557822,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_1-47273-A-21.wav",
+      "origin_start": 0.07825396825396826,
+      "origin_end": 2.3143083900226755,
+      "mixture_start": 2.9127304818323925,
+      "mixture_end": 5.14880575670792,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 3.132154195011338,
+      "origin_end": 5.64172335600907,
+      "mixture_start": 0.6391894994943608,
+      "mixture_end": 3.148768708267114,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_164646.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5224489795918368,
+      "mixture_start": 1.5859771976864034,
+      "mixture_end": 2.10842617727824,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and fire alarm and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and fire alarm and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and gunshot and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and gunshot and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and fire alarm and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and fire alarm and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and gunshot and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove fire alarm and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_245_rep1.json b/data/audio_mixtures_no_speech/train/airport_3dist_245_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..d301d5a7532a78618ef4cb7f3eafe16549eb879c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_245_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_245_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "drill",
+    "footsteps",
+    "gunshot"
+  ],
+  "audio_file": "airport_3dist_245_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p234/p234_072.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.903083900226757,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_ILBDMisz5K8_chunk_006.mp3",
+      "origin_start": 280.8885714285714,
+      "origin_end": 290.8885714285714,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/val/drill/fsd50k_377525.wav",
+      "origin_start": 6.214784580498867,
+      "origin_end": 8.356757369614513,
+      "mixture_start": 7.180827838508272,
+      "mixture_end": 9.322819757874969,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_213307.wav",
+      "origin_start": 1.3246938775510204,
+      "origin_end": 3.9729251700680273,
+      "mixture_start": 3.5073472930434817,
+      "mixture_end": 6.155583794536886,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_387477.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.626938775510204,
+      "mixture_start": 8.791190900274298,
+      "mixture_end": 9.418129675784503,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and footsteps and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and footsteps and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and keep footsteps and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep drill and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and footsteps and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and footsteps and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and gunshot and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and remove footsteps and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_249_rep1.json b/data/audio_mixtures_no_speech/train/airport_3dist_249_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..73a1f2b0e27777fbd5a994d4f41620edc82dbbec
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_249_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_249_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "alarm_clock",
+    "boom",
+    "jackhammer"
+  ],
+  "audio_file": "airport_3dist_249_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_223.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.441043083900227,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Airport/asmr_Airport_ILBDMisz5K8_chunk_001.mp3",
+      "origin_start": 0.8520861678004535,
+      "origin_end": 10.852086167800454,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/val/alarm_clock/fsd50k_83280.wav",
+      "origin_start": 2.7845351473922904,
+      "origin_end": 5.852766439909297,
+      "mixture_start": 4.483484814736352,
+      "mixture_end": 7.551730940774828,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_162361.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8243083900226758,
+      "mixture_start": 1.3848830925605944,
+      "mixture_end": 2.20919148258327,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/val/jackhammer/fsd50k_68080.wav",
+      "origin_start": 6.076961451247166,
+      "origin_end": 9.60532879818594,
+      "mixture_start": 0.19372477376736075,
+      "mixture_end": 3.7221014322582646,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and boom and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "boom",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and boom and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "boom",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep boom and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep alarm clock and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and boom and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and boom and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove alarm clock and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove boom and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_252_rep1.json b/data/audio_mixtures_no_speech/train/airport_3dist_252_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..6bd2fff042c811f436cd22486f9146b0f4f6ce12
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_252_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "airport_3dist_252_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "drill",
+    "boom",
+    "gunshot"
+  ],
+  "audio_file": "airport_3dist_252_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p267/p267_121.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.1792517006802723,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Airport/asmr_Airport_ILBDMisz5K8_chunk_001.mp3",
+      "origin_start": 174.2294784580499,
+      "origin_end": 184.2294784580499,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_386257.wav",
+      "origin_start": 0.25405895691609975,
+      "origin_end": 3.7337868480725622,
+      "mixture_start": 1.5064609130759832,
+      "mixture_end": 4.986190901663703,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/val/boom/fsd50k_251759.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.3583673469387756,
+      "mixture_start": 0.614876034754479,
+      "mixture_end": 1.9732433816932546,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_36815.wav",
+      "origin_start": 6.766575963718821,
+      "origin_end": 9.203990929705215,
+      "mixture_start": 5.714211566550584,
+      "mixture_end": 8.151638530568496,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and boom and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and boom and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and gunshot and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and gunshot and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and boom and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and boom and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove drill and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and gunshot and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_255_rep4.json b/data/audio_mixtures_no_speech/train/airport_3dist_255_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..f51bb3f95055b577db2ba652d59f4319328e9e1c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_255_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_255_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "ringtone",
+    "slam"
+  ],
+  "audio_file": "airport_3dist_255_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_105.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.1617460317460315,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_137oN5uUVyQ_chunk_004.mp3",
+      "origin_start": 2.5664625850340137,
+      "origin_end": 12.566462585034014,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_35104.wav",
+      "origin_start": 3.9620181405895694,
+      "origin_end": 6.65750566893424,
+      "mixture_start": 5.811803792417999,
+      "mixture_end": 8.50730104415301,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167533.wav",
+      "origin_start": 3.427687074829932,
+      "origin_end": 5.764943310657596,
+      "mixture_start": 3.6883113913892998,
+      "mixture_end": 6.025573614913929,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_394946.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0797278911564625,
+      "mixture_start": 3.0723183028219605,
+      "mixture_end": 4.152046193978423,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and ringtone and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep slam and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and slam and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep applause and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and ringtone and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and slam and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and slam and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_267_rep2.json b/data/audio_mixtures_no_speech/train/airport_3dist_267_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..0deb47e36702bca030df7e84ec3f119dd966197e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_267_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_267_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "alarm_clock",
+    "glass_breaking",
+    "hammer"
+  ],
+  "audio_file": "airport_3dist_267_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_181.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.036122448979592,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_ILBDMisz5K8_chunk_006.mp3",
+      "origin_start": 258.13798185941044,
+      "origin_end": 268.13798185941044,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_361856.wav",
+      "origin_start": 8.743877551020407,
+      "origin_end": 10.98140589569161,
+      "mixture_start": 4.222031980910046,
+      "mixture_end": 6.459573012947636,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_179265.wav",
+      "origin_start": 0.10319727891156463,
+      "origin_end": 2.1427437641723355,
+      "mixture_start": 0.4458637008193356,
+      "mixture_end": 2.4854280019681663,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_70313.wav",
+      "origin_start": 2.2586621315192743,
+      "origin_end": 4.608866213151927,
+      "mixture_start": 6.66039470173085,
+      "mixture_end": 9.010621093258175,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and glass breaking and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and glass breaking and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and hammer and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep alarm clock and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep alarm clock and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove alarm clock and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove alarm clock and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and hammer and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_271_rep2.json b/data/audio_mixtures_no_speech/train/airport_3dist_271_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..1d88e22f8f4a30aa6931032313adefcb3be0ce4e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_271_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "airport_3dist_271_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "baby_cry",
+    "slam"
+  ],
+  "audio_file": "airport_3dist_271_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_221.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.635260770975057,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_022.mp3",
+      "origin_start": 229.86489795918368,
+      "origin_end": 239.86489795918368,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/esc-50_4-154443-A-24.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8126984126984127,
+      "mixture_start": 0.11576094902776989,
+      "mixture_end": 0.9284593617261826,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/val/baby_cry/disco_noises_271350_1.wav",
+      "origin_start": 16.093446712018142,
+      "origin_end": 19.35705215419501,
+      "mixture_start": 3.536797913817131,
+      "mixture_end": 6.800406056598858,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_390976.wav",
+      "origin_start": 0.3643310657596372,
+      "origin_end": 2.4062585034013604,
+      "mixture_start": 0.8126905144788554,
+      "mixture_end": 2.8546229364654256,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and baby cry and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep slam and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove slam and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep baby cry and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and slam and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep cough and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove cough and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and slam and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and slam and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_273_rep2.json b/data/audio_mixtures_no_speech/train/airport_3dist_273_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..b5d8823c468b3179ef17f59aa7bccf97c4d3fdba
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_273_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_273_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "footsteps",
+    "gunshot"
+  ],
+  "audio_file": "airport_3dist_273_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_370.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0509750566893423,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_002.mp3",
+      "origin_start": 158.96768707482994,
+      "origin_end": 168.96768707482994,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_189835.wav",
+      "origin_start": 5.719229024943311,
+      "origin_end": 8.2218820861678,
+      "mixture_start": 2.4735677179988738,
+      "mixture_end": 4.976240914127834,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_379207.wav",
+      "origin_start": 3.910045351473923,
+      "origin_end": 6.304353741496598,
+      "mixture_start": 6.889885874394956,
+      "mixture_end": 9.284201025009025,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_96636.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6733786848072563,
+      "mixture_start": 3.5659257363680266,
+      "mixture_end": 4.239304421175283,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and footsteps and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and footsteps and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and gunshot and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep applause and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and footsteps and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove applause and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and gunshot and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove footsteps and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_276_rep2.json b/data/audio_mixtures_no_speech/train/airport_3dist_276_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..5a1b2dd4e694a7820db06c8ee1cd375d880196d3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_276_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_276_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "ringtone",
+    "alarm_clock",
+    "baby_cry"
+  ],
+  "audio_file": "airport_3dist_276_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p282/p282_037.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.393356009070295,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_020.mp3",
+      "origin_start": 123.82344671201814,
+      "origin_end": 133.82344671201815,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_178884.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.850952380952381,
+      "mixture_start": 0.16329205530771018,
+      "mixture_end": 2.014244436260091,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_369879.wav",
+      "origin_start": 0.9055102040816326,
+      "origin_end": 4.412154195011338,
+      "mixture_start": 5.471492320115349,
+      "mixture_end": 8.978155098076098,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_351770.wav",
+      "origin_start": 2.040566893424036,
+      "origin_end": 4.772517006802721,
+      "mixture_start": 3.344243667115607,
+      "mixture_end": 6.076211085312724,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and alarm clock and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and baby cry and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "baby_cry"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and baby cry and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep ringtone and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and alarm clock and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove ringtone and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and baby cry and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_283_rep2.json b/data/audio_mixtures_no_speech/train/airport_3dist_283_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..3e090b4143e5a584aa7017d684c95548c684416f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_283_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_283_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "footsteps",
+    "slam"
+  ],
+  "audio_file": "airport_3dist_283_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p243/p243_005.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.869977324263038,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_020.mp3",
+      "origin_start": 23.141269841269843,
+      "origin_end": 33.14126984126984,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_179012.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0913378684807256,
+      "mixture_start": 2.5964537141227404,
+      "mixture_end": 3.6877915826034657,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_429802.wav",
+      "origin_start": 3.0427891156462583,
+      "origin_end": 6.996666666666667,
+      "mixture_start": 3.0623400500170286,
+      "mixture_end": 7.016229609780023,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_413274.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6617687074829932,
+      "mixture_start": 1.514625450935278,
+      "mixture_end": 2.176394158418271,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and footsteps and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and footsteps and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep slam and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove slam and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep footsteps and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep cellphone buzz vibrating alert and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and footsteps and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove cellphone buzz vibrating alert and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and slam and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove footsteps and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_284_rep1.json b/data/audio_mixtures_no_speech/train/airport_3dist_284_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..d8f32de76ae09b840effde45b924f393e51ea208
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_284_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_284_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "drill",
+    "boom",
+    "dog"
+  ],
+  "audio_file": "airport_3dist_284_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p225/p225_253.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.5068480725623585,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Airport/asmr_Airport_ILBDMisz5K8_chunk_000.mp3",
+      "origin_start": 187.54507936507937,
+      "origin_end": 197.54507936507937,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_386248.wav",
+      "origin_start": 2.4607709750566893,
+      "origin_end": 4.821043083900227,
+      "mixture_start": 4.605406010520374,
+      "mixture_end": 6.9656978089213535,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_344686.wav",
+      "origin_start": 0.04578231292517007,
+      "origin_end": 2.2418820861678004,
+      "mixture_start": 6.028295838773132,
+      "mixture_end": 8.224400738494001,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_4912.wav",
+      "origin_start": 0.2978231292517007,
+      "origin_end": 2.523582766439909,
+      "mixture_start": 1.6230912181533057,
+      "mixture_end": 3.848856763959631,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and boom and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and boom and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep dog and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and dog and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep drill and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and boom and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and boom and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and dog and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and dog and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_297_rep4.json b/data/audio_mixtures_no_speech/train/airport_3dist_297_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..4a468387dfa58e26eb0cf97f3f36b355f481f68f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_297_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "airport_3dist_297_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "ringtone",
+    "glass_breaking",
+    "hammer"
+  ],
+  "audio_file": "airport_3dist_297_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_221.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6892290249433106,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_013.mp3",
+      "origin_start": 180.27839002267575,
+      "origin_end": 190.27839002267575,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167535.wav",
+      "origin_start": 3.2642630385487528,
+      "origin_end": 5.366190476190476,
+      "mixture_start": 7.066369859558696,
+      "mixture_end": 9.168307528415216,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_179228.wav",
+      "origin_start": 1.7810204081632652,
+      "origin_end": 4.523401360544217,
+      "mixture_start": 0.710309102182326,
+      "mixture_end": 3.4526972304670664,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_212391.wav",
+      "origin_start": 2.7226077097505668,
+      "origin_end": 5.734149659863945,
+      "mixture_start": 3.5086434974239746,
+      "mixture_end": 6.520188810092643,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and glass breaking and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and glass breaking and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep glass breaking and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and hammer and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and glass breaking and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove ringtone and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove ringtone and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and hammer and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/airport_3dist_299_rep3.json b/data/audio_mixtures_no_speech/train/airport_3dist_299_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..9b9293d14272252254e1bc41f8a084c2715ab509
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_299_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_299_rep3",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "dog",
+    "gunshot",
+    "jackhammer"
+  ],
+  "audio_file": "airport_3dist_299_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_217.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0953061224489797,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_002.mp3",
+      "origin_start": 198.09759637188208,
+      "origin_end": 208.09759637188208,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_236967.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8243083900226758,
+      "mixture_start": 5.3621870820604,
+      "mixture_end": 6.186495472083076,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_387336.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7662585034013606,
+      "mixture_start": 2.1128123688698994,
+      "mixture_end": 2.87907087227126,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_146261.wav",
+      "origin_start": 0.34861678004535146,
+      "origin_end": 4.3126984126984125,
+      "mixture_start": 2.782618626329105,
+      "mixture_end": 6.746718472450738,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog and gunshot and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and gunshot and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and jackhammer and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep dog and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep dog and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and gunshot and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove dog and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and jackhammer and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_001_rep1.json b/data/audio_mixtures_no_speech/train/beach_1dist_001_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..8f25ed77180f8d0258f3c8dcfafe5a94f863dce3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_001_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "beach_1dist_001_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "beach_1dist_001_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p278/p278_241.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.71281179138322,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_055.mp3",
+      "origin_start": 31.744263038548752,
+      "origin_end": 41.74426303854875,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_159705.wav",
+      "origin_start": 0.1647845804988662,
+      "origin_end": 2.7285260770975057,
+      "mixture_start": 2.6588782748747195,
+      "mixture_end": 5.222626073296871,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_003_rep1.json b/data/audio_mixtures_no_speech/train/beach_1dist_003_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..302377d9986dd98a16546f9d85683f8361e5c3da
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_003_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_003_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "engine"
+  ],
+  "audio_file": "beach_1dist_003_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p228/p228_232.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9478684807256235,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_urVW36rIHYM_chunk_015.mp3",
+      "origin_start": 236.15748299319728,
+      "origin_end": 246.15748299319728,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/esc-50_2-107228-B-44.wav",
+      "origin_start": 0.3170521541950113,
+      "origin_end": 4.213650793650793,
+      "mixture_start": 5.174485726253245,
+      "mixture_end": 9.071102788843502,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_028_rep1.json b/data/audio_mixtures_no_speech/train/beach_1dist_028_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..28df67859e4f5222c9cd08af8dc857fbd65bbec3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_028_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_028_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "dog"
+  ],
+  "audio_file": "beach_1dist_028_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_188.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.13421768707483,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_084.mp3",
+      "origin_start": 68.94430839002267,
+      "origin_end": 78.94430839002267,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/esc-50_3-180977-A-0.wav",
+      "origin_start": 1.0631065759637188,
+      "origin_end": 4.44968253968254,
+      "mixture_start": 0.14255935009580806,
+      "mixture_end": 3.5291386283344397,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_030_rep1.json b/data/audio_mixtures_no_speech/train/beach_1dist_030_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..f71d958dcc75158a7b2e85f329b1ecde3c2318d5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_030_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "beach_1dist_030_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "beach_1dist_030_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_057.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.6297505668934242,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_urVW36rIHYM_chunk_020.mp3",
+      "origin_start": 146.8455328798186,
+      "origin_end": 156.8455328798186,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_24929.wav",
+      "origin_start": 11.743469387755102,
+      "origin_end": 14.518163265306123,
+      "mixture_start": 2.2571902833357083,
+      "mixture_end": 5.031901093778685,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_035_rep4.json b/data/audio_mixtures_no_speech/train/beach_1dist_035_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..ea4e03fae99a0f0f6c2738860296eb14f3d1efe9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_035_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_035_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "cricket"
+  ],
+  "audio_file": "beach_1dist_035_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p243/p243_089.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.501995464852608,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_100.mp3",
+      "origin_start": 105.54786848072563,
+      "origin_end": 115.54786848072563,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/val/cricket/esc-50_4-163697-A-13.wav",
+      "origin_start": 1.0925850340136054,
+      "origin_end": 3.290045351473923,
+      "mixture_start": 6.4681686835073195,
+      "mixture_end": 8.665631511262692,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_039_rep4.json b/data/audio_mixtures_no_speech/train/beach_1dist_039_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..37a5fbac7c9b6e93488ee2be205726aee652691d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_039_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_039_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "applause"
+  ],
+  "audio_file": "beach_1dist_039_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_090.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.479501133786848,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_Nep1qytq9JM_chunk_071.mp3",
+      "origin_start": 280.61662131519273,
+      "origin_end": 290.61662131519273,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_35103.wav",
+      "origin_start": 1.8455328798185942,
+      "origin_end": 4.274263038548753,
+      "mixture_start": 1.8465878161613563,
+      "mixture_end": 4.27531980188315,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_053_rep4.json b/data/audio_mixtures_no_speech/train/beach_1dist_053_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..f197c769af2418259df663f8b432538e3e472676
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_053_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_053_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "birds_chirping"
+  ],
+  "audio_file": "beach_1dist_053_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_236.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.887732426303855,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_urVW36rIHYM_chunk_000.mp3",
+      "origin_start": 261.57691609977326,
+      "origin_end": 271.57691609977326,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_194515.wav",
+      "origin_start": 6.556190476190476,
+      "origin_end": 10.221768707482994,
+      "mixture_start": 5.56494043858017,
+      "mixture_end": 9.230527897579874,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_064_rep3.json b/data/audio_mixtures_no_speech/train/beach_1dist_064_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..802350fa9f8e4238a16e0e4e2ba78d9607e2266e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_064_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "beach_1dist_064_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "beach_1dist_064_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_266.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.3107029478458045,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_006.mp3",
+      "origin_start": 145.68605442176872,
+      "origin_end": 155.68605442176872,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-70936-A-42.wav",
+      "origin_start": 1.3592290249433105,
+      "origin_end": 3.69609977324263,
+      "mixture_start": 1.3165837798357933,
+      "mixture_end": 3.65347642986158,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_065_rep3.json b/data/audio_mixtures_no_speech/train/beach_1dist_065_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..2625b347ddb95c22ed94114883c66ef78e025ab2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_065_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_065_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "helicopter"
+  ],
+  "audio_file": "beach_1dist_065_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p234/p234_013.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.441632653061225,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_080.mp3",
+      "origin_start": 26.876145124716555,
+      "origin_end": 36.87614512471655,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_1-172649-D-40.wav",
+      "origin_start": 0.2643537414965986,
+      "origin_end": 3.8335600907029477,
+      "mixture_start": 3.5497146444394847,
+      "mixture_end": 7.1189275905922695,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_066_rep2.json b/data/audio_mixtures_no_speech/train/beach_1dist_066_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..396d33ea6193ed367b323b3025cb676ddd847542
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_066_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "beach_1dist_066_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "beach_1dist_066_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p237/p237_335.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3066666666666666,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_056.mp3",
+      "origin_start": 188.56809523809522,
+      "origin_end": 198.56809523809522,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_351711.wav",
+      "origin_start": 0.46512471655328796,
+      "origin_end": 4.4478684807256235,
+      "mixture_start": 5.820480685457316,
+      "mixture_end": 9.803240419307203,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_069_rep1.json b/data/audio_mixtures_no_speech/train/beach_1dist_069_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..3018d32b0514831e6cab3039fdc963caa743f06b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_069_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_069_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "cricket"
+  ],
+  "audio_file": "beach_1dist_069_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p240/p240_136.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.075532879818594,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_Nep1qytq9JM_chunk_018.mp3",
+      "origin_start": 238.7110657596372,
+      "origin_end": 248.7110657596372,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_243682.wav",
+      "origin_start": 4.135804988662131,
+      "origin_end": 6.809002267573696,
+      "mixture_start": 6.67891064707889,
+      "mixture_end": 9.352118861358957,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_077_rep1.json b/data/audio_mixtures_no_speech/train/beach_1dist_077_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..628766f8f17924204452535e3d0e22c92c85e9b8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_077_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_077_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "helicopter"
+  ],
+  "audio_file": "beach_1dist_077_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_327.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9046031746031744,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_010.mp3",
+      "origin_start": 236.53680272108843,
+      "origin_end": 246.53680272108843,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_3-150979-A-40.wav",
+      "origin_start": 0.6719047619047619,
+      "origin_end": 2.853764172335601,
+      "mixture_start": 2.4790299900824153,
+      "mixture_end": 4.660899669719143,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_078_rep3.json b/data/audio_mixtures_no_speech/train/beach_1dist_078_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..0bb939b2a918d08eaf17f8797c9e1cd230da9d0e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_078_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "beach_1dist_078_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "beach_1dist_078_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_075.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.394149659863946,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_042.mp3",
+      "origin_start": 172.2800680272109,
+      "origin_end": 182.2800680272109,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_67359.wav",
+      "origin_start": 0.002993197278911565,
+      "origin_end": 2.44609977324263,
+      "mixture_start": 1.47836595234357,
+      "mixture_end": 3.921492563663349,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_083_rep1.json b/data/audio_mixtures_no_speech/train/beach_1dist_083_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..4bbe54c98cea0ac7a8d5a014bb2ce3500f4acbff
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_083_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_083_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "cricket"
+  ],
+  "audio_file": "beach_1dist_083_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_402.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9639002267573695,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_056.mp3",
+      "origin_start": 72.46439909297052,
+      "origin_end": 82.46439909297052,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/esc-50_2-85139-A-13.wav",
+      "origin_start": 0.28984126984126984,
+      "origin_end": 2.9954421768707484,
+      "mixture_start": 2.1618988012517284,
+      "mixture_end": 4.867519131998993,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_1dist_098_rep4.json b/data/audio_mixtures_no_speech/train/beach_1dist_098_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..5824765f797d8d7d4f3ec57a02ca91df7fd6e75b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_098_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_098_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "cricket"
+  ],
+  "audio_file": "beach_1dist_098_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p266/p266_232.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.247981859410431,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_077.mp3",
+      "origin_start": 150.6279365079365,
+      "origin_end": 160.6279365079365,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/esc-50_1-80841-A-13.wav",
+      "origin_start": 1.7088208616780045,
+      "origin_end": 4.838684807256236,
+      "mixture_start": 3.6979685193780534,
+      "mixture_end": 6.827849528770724,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_2dist_111_rep2.json b/data/audio_mixtures_no_speech/train/beach_2dist_111_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..01871fe4213ab9a26c824ba6cf3ae8b530594a0f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_111_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "beach_2dist_111_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "boom",
+    "car_horn"
+  ],
+  "audio_file": "beach_2dist_111_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_153.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.391496598639456,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_073.mp3",
+      "origin_start": 86.80832199546485,
+      "origin_end": 96.80832199546485,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_127845.wav",
+      "origin_start": 0.10294784580498866,
+      "origin_end": 2.107142857142857,
+      "mixture_start": 6.92367380285792,
+      "mixture_end": 8.927887789381597,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/esc-50_3-155130-A-43.wav",
+      "origin_start": 0.3777324263038549,
+      "origin_end": 3.909954648526077,
+      "mixture_start": 0.44942378464267846,
+      "mixture_end": 3.9816506383621233,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_2dist_114_rep4.json b/data/audio_mixtures_no_speech/train/beach_2dist_114_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..fbbc47fd27f6f70c72832ddc6feb34eb2c080dca
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_114_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "beach_2dist_114_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "car_horn"
+  ],
+  "audio_file": "beach_2dist_114_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_245.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.7324263038548753,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_003.mp3",
+      "origin_start": 219.2156916099773,
+      "origin_end": 229.2156916099773,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_1-14262-A-37.wav",
+      "origin_start": 0.6724036281179139,
+      "origin_end": 3.527596371882086,
+      "mixture_start": 6.180223843570396,
+      "mixture_end": 9.035424410600058,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/esc-50_3-161010-A-43.wav",
+      "origin_start": 1.1901360544217687,
+      "origin_end": 4.968208616780045,
+      "mixture_start": 1.0913517898432354,
+      "mixture_end": 4.86942616312986,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_2dist_125_rep4.json b/data/audio_mixtures_no_speech/train/beach_2dist_125_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..452fff8a0da92d309c851f7de3daaaf9d3752a56
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_125_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "beach_2dist_125_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "dog"
+  ],
+  "audio_file": "beach_2dist_125_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p270/p270_084.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2013378684807257,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_Nep1qytq9JM_chunk_093.mp3",
+      "origin_start": 17.578117913832198,
+      "origin_end": 27.578117913832198,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_33673.wav",
+      "origin_start": 2.038095238095238,
+      "origin_end": 5.943015873015873,
+      "mixture_start": 5.268483271966132,
+      "mixture_end": 9.173413856559538,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_236099.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0913378684807256,
+      "mixture_start": 1.8294904456904584,
+      "mixture_end": 2.920828314171184,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_2dist_131_rep1.json b/data/audio_mixtures_no_speech/train/beach_2dist_131_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..2ba313effc9aacbafc8b90b0191f78bdc35946a1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_131_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "beach_2dist_131_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "engine",
+    "boom"
+  ],
+  "audio_file": "beach_2dist_131_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_430.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8594784580498867,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_nta1YhicoGw_chunk_004.mp3",
+      "origin_start": 244.21571428571428,
+      "origin_end": 254.21571428571428,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/esc-50_2-78651-A-44.wav",
+      "origin_start": 0.6652834467120181,
+      "origin_end": 2.919160997732426,
+      "mixture_start": 0.19212720792680085,
+      "mixture_end": 2.44601396447257,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/val/boom/fsd50k_424317.wav",
+      "origin_start": 3.5900680272108842,
+      "origin_end": 6.076190476190476,
+      "mixture_start": 6.646614283699298,
+      "mixture_end": 9.132752222378112,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_2dist_132_rep1.json b/data/audio_mixtures_no_speech/train/beach_2dist_132_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..b51176dd2d0eeb3c8af4c1b31af31dc2d82afa48
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_132_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "beach_2dist_132_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "boom",
+    "dog"
+  ],
+  "audio_file": "beach_2dist_132_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_466.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.0734013605442176,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_nta1YhicoGw_chunk_002.mp3",
+      "origin_start": 193.667641723356,
+      "origin_end": 203.667641723356,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_434431.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.799546485260771,
+      "mixture_start": 6.795166593523028,
+      "mixture_end": 8.5947130787838,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_11722.wav",
+      "origin_start": 0.18378684807256235,
+      "origin_end": 2.272925170068027,
+      "mixture_start": 7.811801035823687,
+      "mixture_end": 9.90095555679978,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_2dist_170_rep3.json b/data/audio_mixtures_no_speech/train/beach_2dist_170_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..7c533d173cd705b4862e16dd7f7c82b548beea9f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_170_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "beach_2dist_170_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "birds_chirping"
+  ],
+  "audio_file": "beach_2dist_170_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_447.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3052380952380953,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_Nep1qytq9JM_chunk_043.mp3",
+      "origin_start": 30.226349206349205,
+      "origin_end": 40.226349206349205,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_365903.wav",
+      "origin_start": 0.0528344671201814,
+      "origin_end": 2.6269160997732426,
+      "mixture_start": 2.3416851520503217,
+      "mixture_end": 4.915768970356574,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_389742.wav",
+      "origin_start": 0.14820861678004535,
+      "origin_end": 2.7782086167800455,
+      "mixture_start": 4.625030972510275,
+      "mixture_end": 7.25504697292147,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_2dist_171_rep2.json b/data/audio_mixtures_no_speech/train/beach_2dist_171_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..94fcf1fb54c48ffb3fbfb35d8c700fe5eea277d3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_171_rep2.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "beach_2dist_171_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "boom",
+    "siren"
+  ],
+  "audio_file": "beach_2dist_171_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_334.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3080725623582765,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_Nep1qytq9JM_chunk_094.mp3",
+      "origin_start": 282.6714739229025,
+      "origin_end": 292.6714739229025,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_434427.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9620861678004535,
+      "mixture_start": 1.2823872943389432,
+      "mixture_end": 3.2444734621393967,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_377126.wav",
+      "origin_start": 3.966235827664399,
+      "origin_end": 6.36374149659864,
+      "mixture_start": 2.3765720966902335,
+      "mixture_end": 4.774081328217262,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_2dist_177_rep1.json b/data/audio_mixtures_no_speech/train/beach_2dist_177_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..76420a462adbef910f95204c30e4605cb4e4b579
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_177_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "beach_2dist_177_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "ringtone"
+  ],
+  "audio_file": "beach_2dist_177_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p281/p281_327.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.399501133786848,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_Nep1qytq9JM_chunk_053.mp3",
+      "origin_start": 211.0554195011338,
+      "origin_end": 221.0554195011338,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_189183.wav",
+      "origin_start": 1.3465532879818594,
+      "origin_end": 4.508095238095238,
+      "mixture_start": 4.887755145190661,
+      "mixture_end": 8.049314542898372,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167546.wav",
+      "origin_start": 2.648344671201814,
+      "origin_end": 5.5553968253968256,
+      "mixture_start": 2.759916914623156,
+      "mixture_end": 5.666969850066748,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_2dist_183_rep2.json b/data/audio_mixtures_no_speech/train/beach_2dist_183_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..03a7374e625a4e7aebbc122b620cc8e91cf58b53
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_183_rep2.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "beach_2dist_183_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "gunshot",
+    "siren"
+  ],
+  "audio_file": "beach_2dist_183_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_252.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.6112244897959185,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_urVW36rIHYM_chunk_012.mp3",
+      "origin_start": 21.749319727891155,
+      "origin_end": 31.749319727891155,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/val/gunshot/fsd50k_26141.wav",
+      "origin_start": 0.3327210884353741,
+      "origin_end": 2.9175283446712017,
+      "mixture_start": 0.7373192021620951,
+      "mixture_end": 3.322146731875476,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_1-76831-A-42.wav",
+      "origin_start": 0.2990702947845805,
+      "origin_end": 3.174829931972789,
+      "mixture_start": 6.556332924548488,
+      "mixture_end": 9.432102908101918,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_2dist_186_rep4.json b/data/audio_mixtures_no_speech/train/beach_2dist_186_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..30bf880fdb9ec422e143224a3512c00961c31375
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_186_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "beach_2dist_186_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "cricket"
+  ],
+  "audio_file": "beach_2dist_186_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_095.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.774353741496599,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_urVW36rIHYM_chunk_020.mp3",
+      "origin_start": 97.2954195011338,
+      "origin_end": 107.2954195011338,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_418898.wav",
+      "origin_start": 1.0625396825396825,
+      "origin_end": 3.340657596371882,
+      "mixture_start": 7.483367349146225,
+      "mixture_end": 9.761493781871835,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_209331.wav",
+      "origin_start": 0.25145124716553285,
+      "origin_end": 2.854331065759637,
+      "mixture_start": 2.2119539296508264,
+      "mixture_end": 4.81484253129222,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_2dist_190_rep4.json b/data/audio_mixtures_no_speech/train/beach_2dist_190_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..747c6746ba6d2e6a85dcae75e984c0d20ccf0193
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_190_rep4.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "beach_2dist_190_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "baby_cry"
+  ],
+  "audio_file": "beach_2dist_190_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_088.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2007709750566895,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_037.mp3",
+      "origin_start": 279.2977551020408,
+      "origin_end": 289.2977551020408,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_134862.wav",
+      "origin_start": 2.3816780045351473,
+      "origin_end": 5.64437641723356,
+      "mixture_start": 2.5704679385808418,
+      "mixture_end": 5.833184998809861,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/val/baby_cry/fsd50k_202730.wav",
+      "origin_start": 9.18294784580499,
+      "origin_end": 11.379773242630385,
+      "mixture_start": 1.3137172304776343,
+      "mixture_end": 3.5105538882957408,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_3dist_219_rep3.json b/data/audio_mixtures_no_speech/train/beach_3dist_219_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..f74b62c12614b68473b2c76b04d7c7f8509de056
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_219_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_219_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "ringtone",
+    "car_horn",
+    "dog"
+  ],
+  "audio_file": "beach_3dist_219_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_173.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.476984126984127,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_026.mp3",
+      "origin_start": 59.30045351473923,
+      "origin_end": 69.30045351473923,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167532.wav",
+      "origin_start": 0.6608390022675737,
+      "origin_end": 2.7573015873015874,
+      "mixture_start": 4.723515905022731,
+      "mixture_end": 6.819993767291538,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/esc-50_2-128465-B-43.wav",
+      "origin_start": 0.2481859410430839,
+      "origin_end": 3.915827664399093,
+      "mixture_start": 1.0071430249381537,
+      "mixture_end": 4.674800219669465,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_107190.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.794875283446712,
+      "mixture_start": 6.4416966195911805,
+      "mixture_end": 7.236571903037892,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and car horn and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and car horn and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and dog and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep ringtone and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and car horn and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove ringtone and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and dog and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and dog and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_3dist_227_rep4.json b/data/audio_mixtures_no_speech/train/beach_3dist_227_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..349bbd1032efacd8de0bc75e9fdd310153efa303
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_227_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_227_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "cricket",
+    "dog",
+    "gunshot"
+  ],
+  "audio_file": "beach_3dist_227_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_082.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.1179591836734692,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_nta1YhicoGw_chunk_008.mp3",
+      "origin_start": 46.756031746031745,
+      "origin_end": 56.756031746031745,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/esc-50_2-125875-A-13.wav",
+      "origin_start": 0.9649433106575964,
+      "origin_end": 4.652176870748299,
+      "mixture_start": 1.262820079844619,
+      "mixture_end": 4.950058638922604,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/esc-50_1-32318-A-0.wav",
+      "origin_start": 1.8065079365079366,
+      "origin_end": 4.309047619047619,
+      "mixture_start": 5.791365730101448,
+      "mixture_end": 8.293905751043212,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_87457.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5456689342403628,
+      "mixture_start": 8.465826142330553,
+      "mixture_end": 9.011495076570915,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cricket and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket and dog and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket",
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket and dog and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket",
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep dog and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep cricket and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket and dog and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cricket and dog and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and remove cricket and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and gunshot and keep cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_3dist_230_rep1.json b/data/audio_mixtures_no_speech/train/beach_3dist_230_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..6c23bbf68824aa8f65da611882b52aca6bea86c4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_230_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_230_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "car_horn",
+    "dog"
+  ],
+  "audio_file": "beach_3dist_230_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_247.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.733605442176871,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_urVW36rIHYM_chunk_015.mp3",
+      "origin_start": 182.57331065759638,
+      "origin_end": 192.57331065759638,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/val/baby_cry/disco_noises_74205.wav",
+      "origin_start": 2.786689342403628,
+      "origin_end": 6.5961451247165535,
+      "mixture_start": 2.4447335533011443,
+      "mixture_end": 6.2542097832794195,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/esc-50_2-128465-B-43.wav",
+      "origin_start": 1.1990702947845806,
+      "origin_end": 3.8225396825396825,
+      "mixture_start": 6.12305877540146,
+      "mixture_end": 8.746529422706427,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/esc-50_2-118072-A-0.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0100680272108844,
+      "mixture_start": 5.528759031305096,
+      "mixture_end": 6.538827058515981,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and car horn and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and car horn and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep dog and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove dog and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep car horn and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep baby cry and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and car horn and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove baby cry and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove baby cry and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove car horn and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_3dist_244_rep4.json b/data/audio_mixtures_no_speech/train/beach_3dist_244_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..8520bfd6384e75c88342f9d5b79e1ea3b7ee822f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_244_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_244_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "ringtone",
+    "alarm_clock"
+  ],
+  "audio_file": "beach_3dist_244_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_283.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0910430839002268,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_013.mp3",
+      "origin_start": 27.656507936507936,
+      "origin_end": 37.656507936507936,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_198354.wav",
+      "origin_start": 9.712857142857143,
+      "origin_end": 12.841292517006803,
+      "mixture_start": 6.644426138733985,
+      "mixture_end": 9.772867954783855,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/val/ringtone/fsd50k_102434.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1261678004535147,
+      "mixture_start": 4.110359497048452,
+      "mixture_end": 5.236527297501967,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_3-148297-A-37.wav",
+      "origin_start": 0.9546485260770975,
+      "origin_end": 2.965532879818594,
+      "mixture_start": 2.0263397613259104,
+      "mixture_end": 4.037231378566803,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and ringtone and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and ringtone and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and alarm clock and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and ringtone and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and ringtone and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and alarm clock and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and alarm clock and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_3dist_246_rep2.json b/data/audio_mixtures_no_speech/train/beach_3dist_246_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..a341729708b3cb54c5bf2fff657564392a59c13a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_246_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_246_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "ringtone",
+    "sneeze"
+  ],
+  "audio_file": "beach_3dist_246_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p260/p260_293.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.4324716553287984,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_082.mp3",
+      "origin_start": 179.73734693877552,
+      "origin_end": 189.73734693877552,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_326891.wav",
+      "origin_start": 10.592766439909298,
+      "origin_end": 14.339886621315193,
+      "mixture_start": 4.859279885822507,
+      "mixture_end": 8.606403174048374,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_117564.wav",
+      "origin_start": 1.023356009070295,
+      "origin_end": 3.060793650793651,
+      "mixture_start": 2.7314674270817716,
+      "mixture_end": 4.768906402601461,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_54505.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.626938775510204,
+      "mixture_start": 3.4169518840064077,
+      "mixture_end": 4.043890659516611,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and ringtone and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep ringtone and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and sneeze and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep cough and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and ringtone and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove cough and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and sneeze and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_3dist_252_rep4.json b/data/audio_mixtures_no_speech/train/beach_3dist_252_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..e78a6ef78bc26d62ff3e155441558c57fecbef21
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_252_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_252_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "helicopter",
+    "siren"
+  ],
+  "audio_file": "beach_3dist_252_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_311.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.226417233560091,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_010.mp3",
+      "origin_start": 101.0131746031746,
+      "origin_end": 111.0131746031746,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_381356.wav",
+      "origin_start": 2.4401360544217687,
+      "origin_end": 5.778616780045351,
+      "mixture_start": 0.31748372237644185,
+      "mixture_end": 3.6559782243247168,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_2-37806-A-40.wav",
+      "origin_start": 1.9389795918367347,
+      "origin_end": 4.706689342403628,
+      "mixture_start": 2.6688083831095524,
+      "mixture_end": 5.436526182365365,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_377126.wav",
+      "origin_start": 5.767551020408163,
+      "origin_end": 8.949637188208618,
+      "mixture_start": 5.456730893665622,
+      "mixture_end": 8.638820831839713,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and helicopter and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "helicopter",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and helicopter and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "helicopter",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep helicopter and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and siren and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep applause and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and helicopter and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and siren and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove helicopter and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_3dist_253_rep4.json b/data/audio_mixtures_no_speech/train/beach_3dist_253_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..63969038d4c9910b47af3fb14360815e4a3f5429
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_253_rep4.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "beach_3dist_253_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "engine",
+    "fireworks",
+    "cricket"
+  ],
+  "audio_file": "beach_3dist_253_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_229.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.50265306122449,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_111.mp3",
+      "origin_start": 97.75374149659864,
+      "origin_end": 107.75374149659864,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/fsd50k_72828.wav",
+      "origin_start": 1.159342403628118,
+      "origin_end": 3.643356009070295,
+      "mixture_start": 4.216655038314682,
+      "mixture_end": 6.700676957400046,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_140717.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7894784580498866,
+      "mixture_start": 8.091403604996714,
+      "mixture_end": 8.8808820630466,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/esc-50_2-83270-A-13.wav",
+      "origin_start": 0.011541950113378685,
+      "origin_end": 3.42875283446712,
+      "mixture_start": 0.9855612873883243,
+      "mixture_end": 4.40277772138996,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and fireworks and cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "cricket"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and fireworks and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "fireworks",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and cricket and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "cricket"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep engine and cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and fireworks and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and fireworks and keep cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and cricket and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and remove fireworks and cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_3dist_260_rep2.json b/data/audio_mixtures_no_speech/train/beach_3dist_260_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..419decf7ed1e880730e292ad5149cf813d439809
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_260_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_260_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "engine",
+    "alarm_clock"
+  ],
+  "audio_file": "beach_3dist_260_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_213.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2882766439909297,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_urVW36rIHYM_chunk_020.mp3",
+      "origin_start": 67.64759637188209,
+      "origin_end": 77.64759637188209,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_369842.wav",
+      "origin_start": 0.6589795918367347,
+      "origin_end": 3.128140589569161,
+      "mixture_start": 3.29756861329046,
+      "mixture_end": 5.766741044746999,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/fsd50k_161103.wav",
+      "origin_start": 2.1968027210884356,
+      "origin_end": 4.862131519274376,
+      "mixture_start": 1.5544058648853571,
+      "mixture_end": 4.219737720084298,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_102435.wav",
+      "origin_start": 0.5841496598639456,
+      "origin_end": 2.638140589569161,
+      "mixture_start": 7.138551317487777,
+      "mixture_end": 9.192550653274878,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and engine and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "engine",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and engine and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "engine",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove engine and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and alarm clock and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and alarm clock and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and engine and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and engine and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove cellphone buzz vibrating alert and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and alarm clock and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_3dist_264_rep4.json b/data/audio_mixtures_no_speech/train/beach_3dist_264_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..ae6e7262b09b098c6a3d02b62cd3b7f3d6551274
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_264_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_264_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "helicopter",
+    "alarm_clock",
+    "boom"
+  ],
+  "audio_file": "beach_3dist_264_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_340.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.0743990929705216,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_089.mp3",
+      "origin_start": 6.719229024943311,
+      "origin_end": 16.71922902494331,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_1-181071-A-40.wav",
+      "origin_start": 2.6124036281179137,
+      "origin_end": 4.9236054421768705,
+      "mixture_start": 4.431424378249137,
+      "mixture_end": 6.7426303969394,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_401132.wav",
+      "origin_start": 5.732267573696145,
+      "origin_end": 9.494285714285715,
+      "mixture_start": 0.995884407329816,
+      "mixture_end": 4.757903525080199,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_161342.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8359183673469388,
+      "mixture_start": 6.7736751469838286,
+      "mixture_end": 7.609593514330768,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and alarm clock and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and alarm clock and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep alarm clock and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and boom and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep helicopter and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove helicopter and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and boom and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and boom and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_3dist_281_rep2.json b/data/audio_mixtures_no_speech/train/beach_3dist_281_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..aa46dd590ad2a8e039ba4fae3fbec2e38dbe3701
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_281_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_281_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "alarm_clock",
+    "birds_chirping",
+    "gunshot"
+  ],
+  "audio_file": "beach_3dist_281_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_181.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.569138321995465,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_Nep1qytq9JM_chunk_116.mp3",
+      "origin_start": 258.49609977324263,
+      "origin_end": 268.49609977324263,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_255195.wav",
+      "origin_start": 10.280839002267573,
+      "origin_end": 12.549047619047618,
+      "mixture_start": 6.516002736031958,
+      "mixture_end": 8.78421630755326,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_245703.wav",
+      "origin_start": 2.0449886621315194,
+      "origin_end": 4.303877551020408,
+      "mixture_start": 2.88028614882455,
+      "mixture_end": 5.139188194945813,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_392226.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7662585034013606,
+      "mixture_start": 4.280310213968031,
+      "mixture_end": 5.046568717369391,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove birds chirping and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and birds chirping and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "birds_chirping",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and birds chirping and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "birds_chirping",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and gunshot and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep alarm clock and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and birds chirping and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and birds chirping and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and gunshot and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and gunshot and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_3dist_294_rep2.json b/data/audio_mixtures_no_speech/train/beach_3dist_294_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..0bbe486a51940d44ea207d322310a2f17c43ee25
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_294_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_294_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "ringtone",
+    "car_horn"
+  ],
+  "audio_file": "beach_3dist_294_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p228/p228_124.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.1670068027210885,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_073.mp3",
+      "origin_start": 130.7271655328798,
+      "origin_end": 140.7271655328798,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_90168.wav",
+      "origin_start": 1.309591836734694,
+      "origin_end": 4.594444444444444,
+      "mixture_start": 5.04615722394931,
+      "mixture_end": 8.331013047608806,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_117567.wav",
+      "origin_start": 1.7863492063492064,
+      "origin_end": 4.223945578231293,
+      "mixture_start": 3.3369129803455695,
+      "mixture_end": 5.77452572128057,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_379034.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9636281179138322,
+      "mixture_start": 8.917042357109848,
+      "mixture_end": 9.88067047502368,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and ringtone and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and ringtone and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and car horn and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and car horn and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep fireworks and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and ringtone and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove fireworks and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove ringtone and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/beach_3dist_297_rep3.json b/data/audio_mixtures_no_speech/train/beach_3dist_297_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..9a523b7c675925899919984d34941afc778f467c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_297_rep3.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "beach_3dist_297_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "ringtone",
+    "siren"
+  ],
+  "audio_file": "beach_3dist_297_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p225/p225_103.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.7928571428571427,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_048.mp3",
+      "origin_start": 182.37984126984128,
+      "origin_end": 192.37984126984128,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_151147.wav",
+      "origin_start": 14.793083900226758,
+      "origin_end": 17.497641723356008,
+      "mixture_start": 3.0187353380872306,
+      "mixture_end": 5.7232975594393505,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_390534.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8475283446712019,
+      "mixture_start": 5.5686443473168445,
+      "mixture_end": 6.416172691988047,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_381957.wav",
+      "origin_start": 6.299954648526077,
+      "origin_end": 9.354036281179138,
+      "mixture_start": 5.952460166128736,
+      "mixture_end": 9.006556730440764,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and ringtone and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and ringtone and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep ringtone and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and siren and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and ringtone and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove cellphone buzz vibrating alert and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and siren and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove ringtone and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_003_rep3.json b/data/audio_mixtures_no_speech/train/bus_1dist_003_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..ac7f95ad6d85adca0664268aac6ab428dd618f0a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_003_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "bus_1dist_003_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "hammer"
+  ],
+  "audio_file": "bus_1dist_003_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p271/p271_036.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.840702947845805,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_009.mp3",
+      "origin_start": 286.0587074829932,
+      "origin_end": 296.0587074829932,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_83687.wav",
+      "origin_start": 12.298367346938775,
+      "origin_end": 14.485895691609977,
+      "mixture_start": 3.2095289397791404,
+      "mixture_end": 5.397075583575528,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_004_rep2.json b/data/audio_mixtures_no_speech/train/bus_1dist_004_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..952a27fc0447b2ad9374726d09326b724ea620e0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_004_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "bus_1dist_004_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "footsteps"
+  ],
+  "audio_file": "bus_1dist_004_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p258/p258_352.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.397551020408163,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_ktprPL9EoyY_chunk_000.mp3",
+      "origin_start": 161.98308390022675,
+      "origin_end": 171.98308390022675,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_379019.wav",
+      "origin_start": 0.6189795918367347,
+      "origin_end": 3.435328798185941,
+      "mixture_start": 5.942363833041345,
+      "mixture_end": 8.75871609695615,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_020_rep2.json b/data/audio_mixtures_no_speech/train/bus_1dist_020_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..90b95d554b0dfbbd9145747b111a606af6e61bd3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_020_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "bus_1dist_020_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "door_knock"
+  ],
+  "audio_file": "bus_1dist_020_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_019.wav",
+      "origin_start": 0.0,
+      "origin_end": 8.06891156462585,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Bus/asmr_Bus_r38kWRF-FSg_chunk_000.mp3",
+      "origin_start": 81.86551020408163,
+      "origin_end": 91.86551020408163,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "door_knock",
+      "display_name": "door knock",
+      "original_path": "distractors/train/door_knock/esc-50_2-140841-A-30.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8126984126984127,
+      "mixture_start": 6.915393815771345,
+      "mixture_end": 7.728092228469757,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove door knock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_027_rep1.json b/data/audio_mixtures_no_speech/train/bus_1dist_027_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..3ec381213221ea18d664270afc70adb07a8b3ac6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_027_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "bus_1dist_027_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "fireworks"
+  ],
+  "audio_file": "bus_1dist_027_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p261/p261_423.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.564761904761905,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_009.mp3",
+      "origin_start": 54.04521541950113,
+      "origin_end": 64.04521541950113,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_109750.wav",
+      "origin_start": 0.442108843537415,
+      "origin_end": 4.411111111111111,
+      "mixture_start": 5.20686824774271,
+      "mixture_end": 9.175889300771132,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_028_rep1.json b/data/audio_mixtures_no_speech/train/bus_1dist_028_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..83d94c2cc61e46370aa70c46f775abe43399932c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_028_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "bus_1dist_028_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "car_alarm"
+  ],
+  "audio_file": "bus_1dist_028_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_377.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.32875283446712,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_008.mp3",
+      "origin_start": 198.7642857142857,
+      "origin_end": 208.7642857142857,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_150981.wav",
+      "origin_start": 1.9027210884353742,
+      "origin_end": 5.06437641723356,
+      "mixture_start": 3.789860752633259,
+      "mixture_end": 6.951534478837162,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_043_rep2.json b/data/audio_mixtures_no_speech/train/bus_1dist_043_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..6595d895df83198f202991c7c4b7b7db906369cf
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_043_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "bus_1dist_043_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "bus_1dist_043_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_031.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.4578004535147393,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_008.mp3",
+      "origin_start": 266.94219954648526,
+      "origin_end": 276.94219954648526,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_1-76831-C-42.wav",
+      "origin_start": 2.3866439909297053,
+      "origin_end": 4.427823129251701,
+      "mixture_start": 1.6658950632303515,
+      "mixture_end": 3.7070917080572605,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_043_rep4.json b/data/audio_mixtures_no_speech/train/bus_1dist_043_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..ae5e25524a985605420747c40cd954790739676d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_043_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "bus_1dist_043_rep4",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "bus_1dist_043_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_004.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.549818594104308,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_008.mp3",
+      "origin_start": 219.10090702947846,
+      "origin_end": 229.10090702947846,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/val/siren/esc-50_4-90014-B-42.wav",
+      "origin_start": 1.2991836734693878,
+      "origin_end": 4.947619047619048,
+      "mixture_start": 4.867261634844484,
+      "mixture_end": 8.51571753359827,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_046_rep2.json b/data/audio_mixtures_no_speech/train/bus_1dist_046_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..f1d36bb63e936e721c6c92334aa287ae019832fd
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_046_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "bus_1dist_046_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "jackhammer"
+  ],
+  "audio_file": "bus_1dist_046_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p241/p241_311.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.433628117913832,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_008.mp3",
+      "origin_start": 195.60197278911565,
+      "origin_end": 205.60197278911565,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386298.wav",
+      "origin_start": 1.409251700680272,
+      "origin_end": 4.540090702947846,
+      "mixture_start": 3.380735507240992,
+      "mixture_end": 6.51159370420222,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_049_rep2.json b/data/audio_mixtures_no_speech/train/bus_1dist_049_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..ddd26a2154e8c257b8003fd048f582f0653dec11
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_049_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "bus_1dist_049_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "bus_1dist_049_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_202.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.308843537414966,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Bus/asmr_Bus_r38kWRF-FSg_chunk_000.mp3",
+      "origin_start": 232.82544217687075,
+      "origin_end": 242.82544217687075,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/val/cellphone_buzz_vibrating_alert/fsd50k_215818.wav",
+      "origin_start": 0.9543310657596372,
+      "origin_end": 3.4965079365079363,
+      "mixture_start": 4.422190819635384,
+      "mixture_end": 6.964368224525929,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_057_rep1.json b/data/audio_mixtures_no_speech/train/bus_1dist_057_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..da7c4ae96eee6db8ee16ecea138ca042ef3544da
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_057_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "bus_1dist_057_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "bus_1dist_057_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_264.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.542766439909297,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_002.mp3",
+      "origin_start": 112.8998185941043,
+      "origin_end": 122.8998185941043,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-72688-A-42.wav",
+      "origin_start": 1.3560997732426303,
+      "origin_end": 4.843718820861678,
+      "mixture_start": 3.3195682804983178,
+      "mixture_end": 6.807204988289087,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_061_rep2.json b/data/audio_mixtures_no_speech/train/bus_1dist_061_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..7a7acbec7a148812a7aedaf2e6136a67ead6d6a6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_061_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "bus_1dist_061_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "bus_1dist_061_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p245/p245_196.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.842902494331066,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_ziS8jw1Kl30_chunk_003.mp3",
+      "origin_start": 55.595124716553286,
+      "origin_end": 65.59512471655329,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_170573.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8359183673469388,
+      "mixture_start": 0.3949786819076373,
+      "mixture_end": 1.230897049254576,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_068_rep2.json b/data/audio_mixtures_no_speech/train/bus_1dist_068_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..669f2039de4e3b2e37c69359c0f2229b12c98af9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_068_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "bus_1dist_068_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "slam"
+  ],
+  "audio_file": "bus_1dist_068_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_253.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9673242630385488,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_ktprPL9EoyY_chunk_001.mp3",
+      "origin_start": 24.70002267573696,
+      "origin_end": 34.70002267573696,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_48980.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0332879818594105,
+      "mixture_start": 7.825684693107731,
+      "mixture_end": 8.858972674967141,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_070_rep2.json b/data/audio_mixtures_no_speech/train/bus_1dist_070_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..391f31a708467d94e18100ee958f6f2295803a25
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_070_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "bus_1dist_070_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "car_horn"
+  ],
+  "audio_file": "bus_1dist_070_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_151.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.122834467120182,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_009.mp3",
+      "origin_start": 239.6922902494331,
+      "origin_end": 249.6922902494331,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/val/car_horn/esc-50_4-178402-A-43.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.811156462585034,
+      "mixture_start": 0.5165321922986248,
+      "mixture_end": 2.3276886548836586,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_072_rep3.json b/data/audio_mixtures_no_speech/train/bus_1dist_072_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..ece2efc6220f6c43cee7bdf631155fe2bafeaac0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_072_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "bus_1dist_072_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "hammer"
+  ],
+  "audio_file": "bus_1dist_072_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p229/p229_354.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9917460317460316,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_ziS8jw1Kl30_chunk_001.mp3",
+      "origin_start": 226.62727891156462,
+      "origin_end": 236.62727891156462,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_218773.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8343764172335602,
+      "mixture_start": 1.2377679232467118,
+      "mixture_end": 3.072144340480272,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_079_rep4.json b/data/audio_mixtures_no_speech/train/bus_1dist_079_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..bfc721676afed6d84eb6a5d9312b2cc79fcf2d8b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_079_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "bus_1dist_079_rep4",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "bus_1dist_079_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_212.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.519047619047619,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Bus/asmr_Bus_r38kWRF-FSg_chunk_000.mp3",
+      "origin_start": 200.63167800453516,
+      "origin_end": 210.63167800453516,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_82497.wav",
+      "origin_start": 5.192947845804989,
+      "origin_end": 8.03655328798186,
+      "mixture_start": 6.0446177000206704,
+      "mixture_end": 8.888231394590004,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_1dist_089_rep1.json b/data/audio_mixtures_no_speech/train/bus_1dist_089_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..0f712ef074a1ea72c7dfe749c5fe5db35db92094
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_089_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "bus_1dist_089_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "footsteps"
+  ],
+  "audio_file": "bus_1dist_089_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_197.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0101360544217686,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_007.mp3",
+      "origin_start": 174.68478458049887,
+      "origin_end": 184.68478458049887,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/val/footsteps/fsd50k_319206.wav",
+      "origin_start": 0.009750566893424037,
+      "origin_end": 3.075170068027211,
+      "mixture_start": 2.3123169427824366,
+      "mixture_end": 5.377751584785898,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_107_rep3.json b/data/audio_mixtures_no_speech/train/bus_2dist_107_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..e70e454fbd638632a61bb167af3f3a6e3d1ad9ac
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_107_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_107_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "helicopter",
+    "hammer"
+  ],
+  "audio_file": "bus_2dist_107_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_013.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.270952380952381,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_002.mp3",
+      "origin_start": 46.829410430839005,
+      "origin_end": 56.829410430839005,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/fsd50k_187678.wav",
+      "origin_start": 0.26267573696145124,
+      "origin_end": 3.372358276643991,
+      "mixture_start": 2.126811686883502,
+      "mixture_end": 5.2364944786979,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_378680.wav",
+      "origin_start": 7.059319727891157,
+      "origin_end": 10.525056689342403,
+      "mixture_start": 4.978848663931593,
+      "mixture_end": 8.444600986477429,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_110_rep1.json b/data/audio_mixtures_no_speech/train/bus_2dist_110_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..88edf7bc0503383d3278ab6facfbaa9602a92146
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_110_rep1.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_110_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "computer_typing",
+    "hammer"
+  ],
+  "audio_file": "bus_2dist_110_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_091.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0057369614512472,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_002.mp3",
+      "origin_start": 82.57809523809524,
+      "origin_end": 92.57809523809524,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/val/computer_typing/fsd50k_153444.wav",
+      "origin_start": 7.86546485260771,
+      "origin_end": 10.371836734693877,
+      "mixture_start": 1.3386833226356416,
+      "mixture_end": 3.8450579208499196,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_212390.wav",
+      "origin_start": 0.4201360544217687,
+      "origin_end": 3.016485260770975,
+      "mixture_start": 7.291794213095667,
+      "mixture_end": 9.888165399919846,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_119_rep3.json b/data/audio_mixtures_no_speech/train/bus_2dist_119_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..ed65c0fad7da0dffc6195c56a58e110cefb0199d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_119_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_119_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "hammer"
+  ],
+  "audio_file": "bus_2dist_119_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p271/p271_438.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0529931972789117,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_011.mp3",
+      "origin_start": 114.37551020408164,
+      "origin_end": 124.37551020408164,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_184434.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.603718820861678,
+      "mixture_start": 7.039238071879987,
+      "mixture_end": 7.642956892741665,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_388057.wav",
+      "origin_start": 2.891315192743764,
+      "origin_end": 6.396054421768707,
+      "mixture_start": 5.056453113289857,
+      "mixture_end": 8.56120535789482,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_130_rep3.json b/data/audio_mixtures_no_speech/train/bus_2dist_130_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..08961d28c72e2b22cfd5a864ff1cf39e51801a05
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_130_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_130_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "car_horn",
+    "slam"
+  ],
+  "audio_file": "bus_2dist_130_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p265/p265_334.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.543514739229025,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_007.mp3",
+      "origin_start": 123.58641723356008,
+      "origin_end": 133.5864172335601,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_424604.wav",
+      "origin_start": 3.7608390022675735,
+      "origin_end": 7.066371882086168,
+      "mixture_start": 6.588931282166396,
+      "mixture_end": 9.894469956301966,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_52289.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9752380952380952,
+      "mixture_start": 5.650193305711109,
+      "mixture_end": 6.6254314009492035,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_134_rep3.json b/data/audio_mixtures_no_speech/train/bus_2dist_134_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..5cd7eb0f930bd0cc8e483df8c361606542f4597f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_134_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_134_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "car_horn"
+  ],
+  "audio_file": "bus_2dist_134_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_097.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.289795918367347,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Bus/asmr_Bus_r38kWRF-FSg_chunk_000.mp3",
+      "origin_start": 156.65421768707483,
+      "origin_end": 166.65421768707483,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_381366.wav",
+      "origin_start": 3.0606349206349206,
+      "origin_end": 5.19968253968254,
+      "mixture_start": 5.570646800770373,
+      "mixture_end": 7.709706802314077,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/esc-50_1-17124-A-43.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6733786848072563,
+      "mixture_start": 4.344385174119049,
+      "mixture_end": 5.017763858926305,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_158_rep2.json b/data/audio_mixtures_no_speech/train/bus_2dist_158_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..7100166504bc9f4abc38dcb0a817c5e6ff2baa7e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_158_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_158_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "helicopter",
+    "sneeze"
+  ],
+  "audio_file": "bus_2dist_158_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p285/p285_117.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.007528344671202,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_011.mp3",
+      "origin_start": 74.13507936507936,
+      "origin_end": 84.13507936507936,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/val/helicopter/esc-50_4-125929-A-40.wav",
+      "origin_start": 1.9192743764172335,
+      "origin_end": 4.795714285714285,
+      "mixture_start": 0.9833161163868064,
+      "mixture_end": 3.8597703809770865,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_2-130979-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7314285714285714,
+      "mixture_start": 2.356585470342307,
+      "mixture_end": 3.088014041770878,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_167_rep1.json b/data/audio_mixtures_no_speech/train/bus_2dist_167_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..b21ee6f830e810b0bb59409ad2730118dd16a9eb
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_167_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "bus_2dist_167_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "fire_alarm"
+  ],
+  "audio_file": "bus_2dist_167_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_210.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.781292517006802,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_ziS8jw1Kl30_chunk_003.mp3",
+      "origin_start": 246.10950113378684,
+      "origin_end": 256.10950113378686,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_217989.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9366213151927437,
+      "mixture_start": 8.606733011907844,
+      "mixture_end": 9.543354327100587,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_124734.wav",
+      "origin_start": 0.3572108843537415,
+      "origin_end": 2.821292517006803,
+      "mixture_start": 2.2230370503146193,
+      "mixture_end": 4.687137135863743,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_168_rep3.json b/data/audio_mixtures_no_speech/train/bus_2dist_168_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..16e83fb0f2778757d4350cd10283df7601a9eb46
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_168_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_168_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "fireworks"
+  ],
+  "audio_file": "bus_2dist_168_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_088.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.5218367346938777,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_011.mp3",
+      "origin_start": 151.9584807256236,
+      "origin_end": 161.9584807256236,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_144254.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9620861678004535,
+      "mixture_start": 6.857591911813562,
+      "mixture_end": 8.819678079614015,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_325663.wav",
+      "origin_start": 0.07768707482993198,
+      "origin_end": 2.4063038548752833,
+      "mixture_start": 4.733397582989155,
+      "mixture_end": 7.062019754082173,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_170_rep3.json b/data/audio_mixtures_no_speech/train/bus_2dist_170_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..3382ad78fcc25e3d13295a445f56a7ac90a6bbb5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_170_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_170_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "car_horn"
+  ],
+  "audio_file": "bus_2dist_170_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_296.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2032426303854877,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_003.mp3",
+      "origin_start": 68.98802721088435,
+      "origin_end": 78.98802721088435,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/val/alarm_clock/esc-50_4-198841-A-37.wav",
+      "origin_start": 0.10297052154195012,
+      "origin_end": 3.7423809523809526,
+      "mixture_start": 5.078337443257295,
+      "mixture_end": 8.717763310888964,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_21687.wav",
+      "origin_start": 0.7093877551020408,
+      "origin_end": 3.398299319727891,
+      "mixture_start": 0.6949911799323142,
+      "mixture_end": 3.3839195755277327,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_173_rep1.json b/data/audio_mixtures_no_speech/train/bus_2dist_173_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..03f38d544eac3649030a1b974b3ce4ce1fc5629b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_173_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "bus_2dist_173_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "ringtone",
+    "footsteps"
+  ],
+  "audio_file": "bus_2dist_173_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_109.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.390839002267574,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_007.mp3",
+      "origin_start": 29.368004535147392,
+      "origin_end": 39.36800453514739,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167541.wav",
+      "origin_start": 2.244512471655329,
+      "origin_end": 4.467823129251701,
+      "mixture_start": 4.637358721335769,
+      "mixture_end": 6.860690629973266,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_429310.wav",
+      "origin_start": 2.422698412698413,
+      "origin_end": 4.884353741496598,
+      "mixture_start": 1.8885800351147626,
+      "mixture_end": 4.350247718731112,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_184_rep1.json b/data/audio_mixtures_no_speech/train/bus_2dist_184_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..7487871a14d1bc6d9374009bd03d5d456d57b14f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_184_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "bus_2dist_184_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "fireworks",
+    "glass_breaking"
+  ],
+  "audio_file": "bus_2dist_184_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_300.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0915419501133785,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_ktprPL9EoyY_chunk_000.mp3",
+      "origin_start": 97.8308843537415,
+      "origin_end": 107.8308843537415,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_205608.wav",
+      "origin_start": 9.827732426303855,
+      "origin_end": 12.65172335600907,
+      "mixture_start": 1.3874787105194448,
+      "mixture_end": 4.21148649856746,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_250709.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.4280272108843537,
+      "mixture_start": 4.662739652265499,
+      "mixture_end": 6.090766863149852,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_185_rep4.json b/data/audio_mixtures_no_speech/train/bus_2dist_185_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..3b54bdd005081121ba9f361a074ae4c309e18826
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_185_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_185_rep4",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "cough"
+  ],
+  "audio_file": "bus_2dist_185_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_089.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.906961451247166,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_ktprPL9EoyY_chunk_000.mp3",
+      "origin_start": 48.40873015873016,
+      "origin_end": 58.40873015873016,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_365903.wav",
+      "origin_start": 0.3679138321995465,
+      "origin_end": 2.6082086167800456,
+      "mixture_start": 2.13802245863946,
+      "mixture_end": 4.378325417395548,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/esc-50_2-108017-A-24.wav",
+      "origin_start": 0.06716553287981859,
+      "origin_end": 4.0495918367346935,
+      "mixture_start": 5.199745950307217,
+      "mixture_end": 9.182185115438408,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm and cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_187_rep2.json b/data/audio_mixtures_no_speech/train/bus_2dist_187_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..f264c997b6f0fc3e4a6e6fee378681065bf9f56c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_187_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_187_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "jackhammer"
+  ],
+  "audio_file": "bus_2dist_187_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_338.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.4351473922902493,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_007.mp3",
+      "origin_start": 197.72190476190477,
+      "origin_end": 207.72190476190477,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/val/alarm_clock/fsd50k_369880.wav",
+      "origin_start": 1.696734693877551,
+      "origin_end": 5.5403174603174605,
+      "mixture_start": 1.174657877541857,
+      "mixture_end": 5.018262156468303,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386305.wav",
+      "origin_start": 4.733265306122449,
+      "origin_end": 8.53639455782313,
+      "mixture_start": 5.375435139197846,
+      "mixture_end": 9.178565829490026,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_193_rep3.json b/data/audio_mixtures_no_speech/train/bus_2dist_193_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..bfe2eec04967116e5f3b80e57deb56d2a61dccb6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_193_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_193_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "computer_typing",
+    "footsteps"
+  ],
+  "audio_file": "bus_2dist_193_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_470.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.951269841269841,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_003.mp3",
+      "origin_start": 110.37337868480725,
+      "origin_end": 120.37337868480725,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/esc-50_2-99796-A-32.wav",
+      "origin_start": 1.1934693877551021,
+      "origin_end": 3.802517006802721,
+      "mixture_start": 5.487794655841262,
+      "mixture_end": 8.096842656060414,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_148796.wav",
+      "origin_start": 0.4715419501133787,
+      "origin_end": 4.190090702947846,
+      "mixture_start": 1.015401985626084,
+      "mixture_end": 4.733972604961256,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_2dist_199_rep4.json b/data/audio_mixtures_no_speech/train/bus_2dist_199_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..816eefbb3b00dd8907666ebdda463553cb318e39
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_199_rep4.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "bus_2dist_199_rep4",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "glass_breaking"
+  ],
+  "audio_file": "bus_2dist_199_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p241/p241_301.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.033469387755102,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_ktprPL9EoyY_chunk_001.mp3",
+      "origin_start": 22.802721088435373,
+      "origin_end": 32.802721088435376,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_179012.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0913378684807256,
+      "mixture_start": 6.311947587255618,
+      "mixture_end": 7.403285455736344,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/esc-50_3-203375-A-39.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7314285714285714,
+      "mixture_start": 4.590735543957208,
+      "mixture_end": 5.322164115385779,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_3dist_202_rep1.json b/data/audio_mixtures_no_speech/train/bus_3dist_202_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..55877c0f3461fdb06841c0a2f74c246ad3f22c22
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_202_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "bus_3dist_202_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "door_knock",
+    "slam"
+  ],
+  "audio_file": "bus_3dist_202_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p261/p261_435.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3075510204081633,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Bus/asmr_Bus_r38kWRF-FSg_chunk_000.mp3",
+      "origin_start": 133.44222222222223,
+      "origin_end": 143.44222222222223,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_162764.wav",
+      "origin_start": 0.04975056689342404,
+      "origin_end": 3.2142403628117915,
+      "mixture_start": 6.0440401646363515,
+      "mixture_end": 9.208547491420322,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "door_knock",
+      "display_name": "door knock",
+      "original_path": "distractors/train/door_knock/fsd50k_334043.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9620861678004535,
+      "mixture_start": 0.2044551666939164,
+      "mixture_end": 2.16654133449437,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_219480.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6501587301587302,
+      "mixture_start": 7.116789059508984,
+      "mixture_end": 7.766947789667714,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove door knock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and door knock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove door knock and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and door knock and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep door knock and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "door_knock",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and door knock and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "door_knock",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep door knock and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove door knock and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove door knock and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove slam and keep door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep door knock and slam and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove door knock and keep applause and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and door knock and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and door knock and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep door knock and remove applause and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove door knock and slam and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_3dist_216_rep1.json b/data/audio_mixtures_no_speech/train/bus_3dist_216_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..2c0c58d30ee98181a0597bb686859e1bf038a2a7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_216_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "bus_3dist_216_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "engine",
+    "hammer"
+  ],
+  "audio_file": "bus_3dist_216_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p258/p258_308.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.5233560090702944,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_009.mp3",
+      "origin_start": 251.90190476190477,
+      "origin_end": 261.90190476190475,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_217989.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9366213151927437,
+      "mixture_start": 1.6088115442444821,
+      "mixture_end": 2.5454328594372257,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/esc-50_2-107228-A-44.wav",
+      "origin_start": 0.5993877551020408,
+      "origin_end": 4.028798185941043,
+      "mixture_start": 0.34182646447460974,
+      "mixture_end": 3.7712369027522556,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_388061.wav",
+      "origin_start": 3.9231519274376416,
+      "origin_end": 6.908571428571428,
+      "mixture_start": 2.8453950870488085,
+      "mixture_end": 5.83082632202132,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm and engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm and engine and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and engine and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "engine",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove engine and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and hammer and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and hammer and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep car alarm and engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove car alarm and engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and hammer and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove engine and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_3dist_224_rep2.json b/data/audio_mixtures_no_speech/train/bus_3dist_224_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..6d2417127a06a312befe47f346e8d64e480f4738
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_224_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "bus_3dist_224_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "cellphone_buzz_vibrating_alert",
+    "jackhammer"
+  ],
+  "audio_file": "bus_3dist_224_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p243/p243_211.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.414331065759637,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_011.mp3",
+      "origin_start": 120.43732426303855,
+      "origin_end": 130.43732426303856,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_189840.wav",
+      "origin_start": 2.732108843537415,
+      "origin_end": 6.467437641723356,
+      "mixture_start": 3.9958970489028767,
+      "mixture_end": 7.731230543660069,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_223183.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7546485260770975,
+      "mixture_start": 3.9000130216974607,
+      "mixture_end": 4.654661547774558,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386331.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5804988662131519,
+      "mixture_start": 0.22588146124861813,
+      "mixture_end": 0.80638032746177,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and cellphone buzz vibrating alert and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and cellphone buzz vibrating alert and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and jackhammer and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep applause and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and cellphone buzz vibrating alert and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and cellphone buzz vibrating alert and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove applause and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove cellphone buzz vibrating alert and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_3dist_236_rep1.json b/data/audio_mixtures_no_speech/train/bus_3dist_236_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..a0732e2110a1639aea98b3a2a0191ce80d707540
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_236_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "bus_3dist_236_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "computer_typing",
+    "gunshot"
+  ],
+  "audio_file": "bus_3dist_236_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p245/p245_176.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.124104308390023,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_006.mp3",
+      "origin_start": 57.871043083900226,
+      "origin_end": 67.87104308390023,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_69585.wav",
+      "origin_start": 0.730249433106576,
+      "origin_end": 3.0129251700680273,
+      "mixture_start": 5.221115369736103,
+      "mixture_end": 7.50380410289382,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/fsd50k_268826.wav",
+      "origin_start": 14.192721088435373,
+      "origin_end": 16.283945578231293,
+      "mixture_start": 0.12369721348395248,
+      "mixture_end": 2.2149311761739194,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_156904.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0565079365079366,
+      "mixture_start": 4.061957279117259,
+      "mixture_end": 5.1184652156251955,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and computer typing and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and computer typing and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep computer typing and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and gunshot and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and computer typing and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove cellphone buzz vibrating alert and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and gunshot and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing and gunshot and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_3dist_236_rep3.json b/data/audio_mixtures_no_speech/train/bus_3dist_236_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..d3b3d50fde74c3a53f641405753c9136f4ed0cf3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_236_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "bus_3dist_236_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "computer_typing",
+    "gunshot"
+  ],
+  "audio_file": "bus_3dist_236_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_389.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.14390022675737,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_ziS8jw1Kl30_chunk_000.mp3",
+      "origin_start": 63.97151927437642,
+      "origin_end": 73.97151927437642,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_256210.wav",
+      "origin_start": 0.15811791383219956,
+      "origin_end": 2.2658503401360544,
+      "mixture_start": 2.498806826425733,
+      "mixture_end": 4.606543096698275,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/esc-50_2-104168-A-32.wav",
+      "origin_start": 1.8136961451247167,
+      "origin_end": 4.6709977324263035,
+      "mixture_start": 4.505923947939812,
+      "mixture_end": 7.363245540857438,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_396276.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6153061224489796,
+      "mixture_start": 5.069730162627586,
+      "mixture_end": 5.685058960813527,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and computer typing and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and computer typing and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep computer typing and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and gunshot and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and computer typing and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove cellphone buzz vibrating alert and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and gunshot and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing and gunshot and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_3dist_238_rep1.json b/data/audio_mixtures_no_speech/train/bus_3dist_238_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..d93d4c2644a8c512f5184bc009c7c7c9be9ded90
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_238_rep1.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "bus_3dist_238_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "glass_breaking",
+    "gunshot"
+  ],
+  "audio_file": "bus_3dist_238_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_458.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.562312925170068,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_009.mp3",
+      "origin_start": 95.55716553287982,
+      "origin_end": 105.55716553287982,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_87604.wav",
+      "origin_start": 12.936938775510203,
+      "origin_end": 16.39938775510204,
+      "mixture_start": 0.8357847045673497,
+      "mixture_end": 4.298235959983546,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_270816.wav",
+      "origin_start": 2.9075963718820863,
+      "origin_end": 5.586122448979592,
+      "mixture_start": 5.229604101711366,
+      "mixture_end": 7.908130194244631,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_349217.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6965759637188209,
+      "mixture_start": 7.934285831259801,
+      "mixture_end": 8.630884470715582,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and glass breaking and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and glass breaking and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep glass breaking and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and gunshot and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep cellphone buzz vibrating alert and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and glass breaking and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove cellphone buzz vibrating alert and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove glass breaking and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_3dist_247_rep1.json b/data/audio_mixtures_no_speech/train/bus_3dist_247_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..8f03d51329c73bf9e62a5c00cd0ae4ca7189e56c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_247_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "bus_3dist_247_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "sneeze",
+    "boom"
+  ],
+  "audio_file": "bus_3dist_247_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_043.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.5219954648526075,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_008.mp3",
+      "origin_start": 123.10120181405895,
+      "origin_end": 133.10120181405895,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_198087.wav",
+      "origin_start": 1.3029478458049886,
+      "origin_end": 4.8776190476190475,
+      "mixture_start": 3.0401502896004784,
+      "mixture_end": 6.614832575284731,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_128631.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8126984126984127,
+      "mixture_start": 5.705930722240952,
+      "mixture_end": 6.518629134939364,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_56603.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8790249433106576,
+      "mixture_start": 7.567276229714916,
+      "mixture_end": 8.446301173025574,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and sneeze and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and sneeze and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and boom and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep applause and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep applause and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove applause and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and boom and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and boom and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_3dist_254_rep2.json b/data/audio_mixtures_no_speech/train/bus_3dist_254_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..56385ae66ef390e8d34396db940866a4dbec6672
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_254_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "bus_3dist_254_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "door_knock",
+    "fire_alarm"
+  ],
+  "audio_file": "bus_3dist_254_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p257/p257_322.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8784807256235827,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_ziS8jw1Kl30_chunk_000.mp3",
+      "origin_start": 111.68498866213152,
+      "origin_end": 121.68498866213152,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/val/fireworks/fsd50k_422079.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9868480725623583,
+      "mixture_start": 3.76277983480992,
+      "mixture_end": 4.749627907372278,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "door_knock",
+      "display_name": "door knock",
+      "original_path": "distractors/train/door_knock/fsd50k_232923.wav",
+      "origin_start": 4.7109750566893425,
+      "origin_end": 7.342267573696145,
+      "mixture_start": 5.897638217227323,
+      "mixture_end": 8.528932907735971,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 2.2679818594104306,
+      "origin_end": 4.617573696145125,
+      "mixture_start": 4.073533765155773,
+      "mixture_end": 6.423130702517124,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove door knock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and door knock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove door knock and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and door knock and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "door_knock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "door_knock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep door knock and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "door_knock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and door knock and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "door_knock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove door knock and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep door knock and fire alarm and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and fire alarm and remove door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and door knock and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and door knock and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep door knock and remove fireworks and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove door knock and fire alarm and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_3dist_262_rep1.json b/data/audio_mixtures_no_speech/train/bus_3dist_262_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..585cf36c3a6fa73eb1ec5dbe11ebad8aa2f3fb0e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_262_rep1.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "bus_3dist_262_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "ringtone",
+    "boom",
+    "siren"
+  ],
+  "audio_file": "bus_3dist_262_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p266/p266_241.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.971111111111111,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_003.mp3",
+      "origin_start": 178.9024716553288,
+      "origin_end": 188.9024716553288,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/val/ringtone/fsd50k_102434.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1261678004535147,
+      "mixture_start": 7.123389821244493,
+      "mixture_end": 8.249557621698008,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_347311.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.3583673469387756,
+      "mixture_start": 0.3980613500332767,
+      "mixture_end": 1.7564286969720522,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_3-51909-B-42.wav",
+      "origin_start": 1.4606802721088434,
+      "origin_end": 3.9582766439909296,
+      "mixture_start": 1.1349216428194235,
+      "mixture_end": 3.6325197370940137,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and boom and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and boom and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep boom and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and siren and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and boom and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove ringtone and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and siren and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and siren and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_3dist_268_rep2.json b/data/audio_mixtures_no_speech/train/bus_3dist_268_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..17b1b202c2b9d43afd3650f442cdb8625a7301c0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_268_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "bus_3dist_268_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "car_horn",
+    "siren"
+  ],
+  "audio_file": "bus_3dist_268_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_312.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.0758503401360544,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Bus/asmr_Bus_r38kWRF-FSg_chunk_000.mp3",
+      "origin_start": 61.07104308390023,
+      "origin_end": 71.07104308390022,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_128631.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8126984126984127,
+      "mixture_start": 3.6655723506869955,
+      "mixture_end": 4.478270763385408,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/esc-50_3-155234-A-43.wav",
+      "origin_start": 0.07546485260770976,
+      "origin_end": 3.511065759637188,
+      "mixture_start": 1.1595627856440724,
+      "mixture_end": 4.595182779971894,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_1-54084-A-42.wav",
+      "origin_start": 0.5403854875283447,
+      "origin_end": 2.9070748299319726,
+      "mixture_start": 4.00772246221643,
+      "mixture_end": 6.374415640203558,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and car horn and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "car_horn",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and car horn and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "car_horn",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep car horn and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep sneeze and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and car horn and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove sneeze and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove sneeze and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and siren and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_3dist_276_rep2.json b/data/audio_mixtures_no_speech/train/bus_3dist_276_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..c4bbdb4f48cb797f2728df9ddae5f9a2c5756067
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_276_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "bus_3dist_276_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "car_horn",
+    "footsteps"
+  ],
+  "audio_file": "bus_3dist_276_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p262/p262_038.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.688775510204082,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_007.mp3",
+      "origin_start": 28.529614512471657,
+      "origin_end": 38.52961451247165,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_75155.wav",
+      "origin_start": 8.331043083900227,
+      "origin_end": 10.618185941043084,
+      "mixture_start": 4.10699988486707,
+      "mixture_end": 6.394165119704836,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_431841.wav",
+      "origin_start": 2.657142857142857,
+      "origin_end": 5.5062585034013605,
+      "mixture_start": 0.7924564078966135,
+      "mixture_end": 3.6415759190458457,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_166287.wav",
+      "origin_start": 0.2758730158730159,
+      "origin_end": 2.334761904761905,
+      "mixture_start": 6.5080634798372925,
+      "mixture_end": 8.5669578394079,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and car horn and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and car horn and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "car_horn",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and footsteps and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and footsteps and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep fireworks and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and car horn and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and footsteps and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and footsteps and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_3dist_283_rep2.json b/data/audio_mixtures_no_speech/train/bus_3dist_283_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..7d24cfe2720a26cbee216ffd23c520ea8ba83c0c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_283_rep2.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "bus_3dist_283_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "ringtone",
+    "glass_breaking",
+    "gunshot"
+  ],
+  "audio_file": "bus_3dist_283_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_188.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.440408163265306,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_008.mp3",
+      "origin_start": 26.65503401360544,
+      "origin_end": 36.655034013605444,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_386782.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.5905668934240362,
+      "mixture_start": 0.8087280980226483,
+      "mixture_end": 2.3992949914466846,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_204144.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8126984126984127,
+      "mixture_start": 7.885394820901251,
+      "mixture_end": 8.698093233599664,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/val/gunshot/fsd50k_197322.wav",
+      "origin_start": 13.976258503401361,
+      "origin_end": 16.927891156462586,
+      "mixture_start": 2.046441042902887,
+      "mixture_end": 4.998091272492601,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and glass breaking and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and glass breaking and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep glass breaking and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and gunshot and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep ringtone and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove ringtone and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove ringtone and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove glass breaking and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/bus_3dist_288_rep1.json b/data/audio_mixtures_no_speech/train/bus_3dist_288_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..91848c1e35e13676f1f30a05e8201008deb9cde1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_288_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "bus_3dist_288_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "baby_cry",
+    "gunshot"
+  ],
+  "audio_file": "bus_3dist_288_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_469.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.7550340136054423,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_002.mp3",
+      "origin_start": 96.51462585034014,
+      "origin_end": 106.51462585034014,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_152995.wav",
+      "origin_start": 0.03151927437641723,
+      "origin_end": 2.767823129251701,
+      "mixture_start": 1.9900804470973132,
+      "mixture_end": 4.726394370943707,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_13802.wav",
+      "origin_start": 1.3004308390022676,
+      "origin_end": 3.7766439909297054,
+      "mixture_start": 5.700686482461654,
+      "mixture_end": 8.176911558944553,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_427592.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8707482993197279,
+      "mixture_start": 2.0702694230556613,
+      "mixture_end": 2.9410177223753893,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and baby cry and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and gunshot and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep cough and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove cough and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cough and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and gunshot and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_006_rep3.json b/data/audio_mixtures_no_speech/train/city_1dist_006_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..26dce38ce3afa90c0a466fbaa0500e84ea9d0a3a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_006_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_006_rep3",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "alarm_clock"
+  ],
+  "audio_file": "city_1dist_006_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p236/p236_369.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.2653968253968255,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_097.mp3",
+      "origin_start": 228.40104308390022,
+      "origin_end": 238.40104308390022,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_1-34853-A-37.wav",
+      "origin_start": 0.599092970521542,
+      "origin_end": 3.459342403628118,
+      "mixture_start": 1.4882861355064259,
+      "mixture_end": 4.348540482481425,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_011_rep1.json b/data/audio_mixtures_no_speech/train/city_1dist_011_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..2d4aaf2b55ef1dba7a30fb5d3d47a83dbdd40a1d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_011_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_011_rep1",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "dog"
+  ],
+  "audio_file": "city_1dist_011_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p236/p236_009.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.6085487528344675,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_009.mp3",
+      "origin_start": 282.9965306122449,
+      "origin_end": 292.9965306122449,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_118962.wav",
+      "origin_start": 0.010430839002267574,
+      "origin_end": 2.0236961451247164,
+      "mixture_start": 4.557535627267255,
+      "mixture_end": 6.570819923847871,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_011_rep4.json b/data/audio_mixtures_no_speech/train/city_1dist_011_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..c02162a5503d1187591266802a7b468c4144d9ff
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_011_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_011_rep4",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "dog"
+  ],
+  "audio_file": "city_1dist_011_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_371.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.5616326530612246,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_BAw342Xqxhs_chunk_000.mp3",
+      "origin_start": 239.46038548752836,
+      "origin_end": 249.46038548752836,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/val/dog/esc-50_4-207124-A-0.wav",
+      "origin_start": 0.716530612244898,
+      "origin_end": 3.7542403628117915,
+      "mixture_start": 0.7764539925944326,
+      "mixture_end": 3.8141647900877986,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_013_rep1.json b/data/audio_mixtures_no_speech/train/city_1dist_013_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..9d885a1f04cde9dae02ed855cbf4a4167de6e2d5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_013_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "city_1dist_013_rep1",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "footsteps"
+  ],
+  "audio_file": "city_1dist_013_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_386.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.137392290249433,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_BAw342Xqxhs_chunk_006.mp3",
+      "origin_start": 226.8816553287982,
+      "origin_end": 236.8816553287982,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_151209.wav",
+      "origin_start": 1.084421768707483,
+      "origin_end": 4.6420861678004535,
+      "mixture_start": 2.6791536180657007,
+      "mixture_end": 6.236819518057978,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_018_rep4.json b/data/audio_mixtures_no_speech/train/city_1dist_018_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..4405707dcf2ece72d46dbcc28bb159afe1041747
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_018_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_018_rep4",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "city_1dist_018_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p245/p245_152.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.631111111111111,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_038.mp3",
+      "origin_start": 137.7868253968254,
+      "origin_end": 147.7868253968254,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_223183.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7546485260770975,
+      "mixture_start": 7.354908056228726,
+      "mixture_end": 8.109556582305823,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_020_rep3.json b/data/audio_mixtures_no_speech/train/city_1dist_020_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..de54072550d97067f702cba0b5e26080481a13e8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_020_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "city_1dist_020_rep3",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "city_1dist_020_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_451.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.158548752834467,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/City/asmr_City_sXJLT3kYdhk_chunk_004.mp3",
+      "origin_start": 188.7241723356009,
+      "origin_end": 198.7241723356009,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/val/baby_cry/disco_noises_470039_2.wav",
+      "origin_start": 7.992380952380953,
+      "origin_end": 10.165691609977324,
+      "mixture_start": 3.5789939253841574,
+      "mixture_end": 5.752322585221545,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_021_rep1.json b/data/audio_mixtures_no_speech/train/city_1dist_021_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..a5f52543432a1746b9fa1f6c9f1f21153b9a013c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_021_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_021_rep1",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "glass_breaking"
+  ],
+  "audio_file": "city_1dist_021_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_007.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8422902494331064,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_075.mp3",
+      "origin_start": 286.90655328798186,
+      "origin_end": 296.90655328798186,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_213158.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.2190476190476192,
+      "mixture_start": 7.677072203977638,
+      "mixture_end": 8.896119823025257,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_023_rep4.json b/data/audio_mixtures_no_speech/train/city_1dist_023_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..c426fba0508334a22d21920243e0194ec051997c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_023_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "city_1dist_023_rep4",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "helicopter"
+  ],
+  "audio_file": "city_1dist_023_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p271/p271_315.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.1586394557823128,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_098.mp3",
+      "origin_start": 198.37181405895691,
+      "origin_end": 208.37181405895691,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/val/helicopter/esc-50_4-193480-A-40.wav",
+      "origin_start": 0.2625170068027211,
+      "origin_end": 3.555691609977324,
+      "mixture_start": 3.6867790209169446,
+      "mixture_end": 6.979969353970677,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_037_rep4.json b/data/audio_mixtures_no_speech/train/city_1dist_037_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..ef50064ceaa775b9203f684256e95f0c0e1e4410
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_037_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "city_1dist_037_rep4",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "hammer"
+  ],
+  "audio_file": "city_1dist_037_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p282/p282_236.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.244126984126984,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_026.mp3",
+      "origin_start": 215.04408163265308,
+      "origin_end": 225.04408163265308,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_408763.wav",
+      "origin_start": 1.2608616780045352,
+      "origin_end": 5.25702947845805,
+      "mixture_start": 3.873894730967557,
+      "mixture_end": 7.87008302154762,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_045_rep1.json b/data/audio_mixtures_no_speech/train/city_1dist_045_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..0947975d598333953fd88586752f2419af1ab76c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_045_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_045_rep1",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "city_1dist_045_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_384.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.228163265306122,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_BAw342Xqxhs_chunk_005.mp3",
+      "origin_start": 156.08444444444444,
+      "origin_end": 166.08444444444444,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_432366.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8243083900226758,
+      "mixture_start": 3.5301217035649946,
+      "mixture_end": 4.35443009358767,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_051_rep2.json b/data/audio_mixtures_no_speech/train/city_1dist_051_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..9093a8a12583fb7158250e7b12a705ab2a7e67ea
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_051_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "city_1dist_051_rep2",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "fireworks"
+  ],
+  "audio_file": "city_1dist_051_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_124.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6915873015873015,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_092.mp3",
+      "origin_start": 55.22160997732426,
+      "origin_end": 65.22160997732426,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_238955.wav",
+      "origin_start": 0.28426303854875284,
+      "origin_end": 3.8159183673469386,
+      "mixture_start": 2.535814107075247,
+      "mixture_end": 6.067478579437003,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_051_rep4.json b/data/audio_mixtures_no_speech/train/city_1dist_051_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..3569956c607688acee24850ea713e811df1ecded
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_051_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "city_1dist_051_rep4",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "fireworks"
+  ],
+  "audio_file": "city_1dist_051_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p282/p282_182.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.9306122448979592,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_004.mp3",
+      "origin_start": 286.5019954648526,
+      "origin_end": 296.5019954648526,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_349800.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.7298866213151927,
+      "mixture_start": 4.172744062981032,
+      "mixture_end": 5.902630684296224,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_072_rep2.json b/data/audio_mixtures_no_speech/train/city_1dist_072_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..a3068446e86a2f63c3a9bceeadf9e49b61c77730
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_072_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_072_rep2",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "glass_breaking"
+  ],
+  "audio_file": "city_1dist_072_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p229/p229_281.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.2190249433106577,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_019.mp3",
+      "origin_start": 70.89786848072562,
+      "origin_end": 80.89786848072562,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_362238.wav",
+      "origin_start": 0.9604761904761905,
+      "origin_end": 3.628390022675737,
+      "mixture_start": 0.26539247523412063,
+      "mixture_end": 2.9333081487169603,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_075_rep4.json b/data/audio_mixtures_no_speech/train/city_1dist_075_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..bec9f06cad25f3a726f32b63b6a8febedb507a5a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_075_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "city_1dist_075_rep4",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "sneeze"
+  ],
+  "audio_file": "city_1dist_075_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p262/p262_390.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.2233106575963717,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_086.mp3",
+      "origin_start": 162.0344671201814,
+      "origin_end": 172.0344671201814,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_257921.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.2770975056689342,
+      "mixture_start": 2.7982006251159053,
+      "mixture_end": 4.075298130784839,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_078_rep4.json b/data/audio_mixtures_no_speech/train/city_1dist_078_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..918109c335448751a3b33c9c3970c73a94f82a9b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_078_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_078_rep4",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "alarm_clock"
+  ],
+  "audio_file": "city_1dist_078_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_085.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.589297052154195,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_BAw342Xqxhs_chunk_009.mp3",
+      "origin_start": 100.0001133786848,
+      "origin_end": 110.0001133786848,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_3-148297-A-37.wav",
+      "origin_start": 0.6364625850340137,
+      "origin_end": 3.367573696145125,
+      "mixture_start": 3.761569232395714,
+      "mixture_end": 6.492690502358026,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_089_rep3.json b/data/audio_mixtures_no_speech/train/city_1dist_089_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..fc2dc3765d9c644311603d8a0dcfdf186e82b63a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_089_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_089_rep3",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "city_1dist_089_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_013.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.080272108843538,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_062.mp3",
+      "origin_start": 149.8115873015873,
+      "origin_end": 159.8115873015873,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_388054.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9752380952380952,
+      "mixture_start": 6.191133603700988,
+      "mixture_end": 7.166371698939082,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_095_rep3.json b/data/audio_mixtures_no_speech/train/city_1dist_095_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..3e9cbfd7d5047567ee40adcb5b5ace2370b4ced7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_095_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_095_rep3",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "boom"
+  ],
+  "audio_file": "city_1dist_095_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p266/p266_188.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.96421768707483,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_025.mp3",
+      "origin_start": 83.45351473922902,
+      "origin_end": 93.45351473922902,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_56600.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6327891156462585,
+      "mixture_start": 4.44382509444694,
+      "mixture_end": 5.076614210093199,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_096_rep1.json b/data/audio_mixtures_no_speech/train/city_1dist_096_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..2ccdc48049188300e4d82b63a524a2060fa68a30
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_096_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_096_rep1",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "car_alarm"
+  ],
+  "audio_file": "city_1dist_096_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p267/p267_067.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.347528344671202,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_086.mp3",
+      "origin_start": 98.86482993197279,
+      "origin_end": 108.86482993197279,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_365903.wav",
+      "origin_start": 0.49188208616780044,
+      "origin_end": 2.6074603174603173,
+      "mixture_start": 5.583219141140758,
+      "mixture_end": 7.698819429206856,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_1dist_100_rep1.json b/data/audio_mixtures_no_speech/train/city_1dist_100_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..8ce89dd9f005ee7e6fa339f7beb8a744454c30a3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_100_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "city_1dist_100_rep1",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "drill"
+  ],
+  "audio_file": "city_1dist_100_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p244/p244_247.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.987142857142857,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_048.mp3",
+      "origin_start": 216.1460544217687,
+      "origin_end": 226.1460544217687,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_254324.wav",
+      "origin_start": 3.937301587301587,
+      "origin_end": 7.625419501133787,
+      "mixture_start": 6.104521880716972,
+      "mixture_end": 9.79264897186789,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_2dist_109_rep3.json b/data/audio_mixtures_no_speech/train/city_2dist_109_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..a9195e48fceae8ec473fb0169d61f4f669362e73
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_109_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "city_2dist_109_rep3",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "fire_alarm",
+    "glass_breaking"
+  ],
+  "audio_file": "city_2dist_109_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p261/p261_370.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.0325396825396824,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_078.mp3",
+      "origin_start": 153.5497052154195,
+      "origin_end": 163.5497052154195,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/val/fire_alarm/fsd50k_270643.wav",
+      "origin_start": 4.263015873015873,
+      "origin_end": 7.453401360544218,
+      "mixture_start": 0.19952931925833367,
+      "mixture_end": 3.3899374204884327,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_65902.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6733786848072563,
+      "mixture_start": 8.695253276690677,
+      "mixture_end": 9.368631961497933,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_2dist_115_rep2.json b/data/audio_mixtures_no_speech/train/city_2dist_115_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..a549fea91cf7895a3a06bb4fa28a57c2341b2406
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_115_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "city_2dist_115_rep2",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "baby_cry"
+  ],
+  "audio_file": "city_2dist_115_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p245/p245_356.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.097006802721088,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_015.mp3",
+      "origin_start": 28.546553287981858,
+      "origin_end": 38.54655328798186,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_352177.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5108390022675737,
+      "mixture_start": 2.5565038147793877,
+      "mixture_end": 3.0673428170469617,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/esc-50_2-50666-A-20.wav",
+      "origin_start": 0.5115192743764172,
+      "origin_end": 3.9537414965986395,
+      "mixture_start": 0.3914959390337845,
+      "mixture_end": 3.8337308176361646,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_2dist_121_rep4.json b/data/audio_mixtures_no_speech/train/city_2dist_121_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..dac8eaa9ce58f47e7a162ad80c99b8dd39aec8e4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_121_rep4.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "city_2dist_121_rep4",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "fire_alarm"
+  ],
+  "audio_file": "city_2dist_121_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p260/p260_332.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.140204081632653,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/City/asmr_City_sXJLT3kYdhk_chunk_008.mp3",
+      "origin_start": 66.2702947845805,
+      "origin_end": 76.2702947845805,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_432063.wav",
+      "origin_start": 14.566394557823129,
+      "origin_end": 18.530294784580498,
+      "mixture_start": 1.075642737229796,
+      "mixture_end": 5.039547441440883,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/val/fire_alarm/fsd50k_270643.wav",
+      "origin_start": 4.246666666666667,
+      "origin_end": 7.746462585034013,
+      "mixture_start": 4.104921490191993,
+      "mixture_end": 7.604739798876867,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_2dist_134_rep3.json b/data/audio_mixtures_no_speech/train/city_2dist_134_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..0512de89c54a900b5126d0e9b283e495d4d2b595
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_134_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "city_2dist_134_rep3",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "engine",
+    "fire_alarm"
+  ],
+  "audio_file": "city_2dist_134_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p240/p240_299.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.5430839002267573,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/City/asmr_City_KkXLEHqzYZk_chunk_042.mp3",
+      "origin_start": 279.7327664399093,
+      "origin_end": 289.7327664399093,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/val/engine/fsd50k_213685.wav",
+      "origin_start": 5.172789115646259,
+      "origin_end": 9.127369614512471,
+      "mixture_start": 1.7479429799834005,
+      "mixture_end": 5.702531354796846,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 6.760544217687075,
+      "origin_end": 9.927233560090704,
+      "mixture_start": 6.438229605598752,
+      "mixture_end": 9.604920575533313,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_2dist_139_rep2.json b/data/audio_mixtures_no_speech/train/city_2dist_139_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..1e7773faa46799fd3be5a0799d0b0836b53f57e7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_139_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "city_2dist_139_rep2",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "car_horn",
+    "hammer"
+  ],
+  "audio_file": "city_2dist_139_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p271/p271_202.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.569795918367347,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_037.mp3",
+      "origin_start": 246.95648526077096,
+      "origin_end": 256.956485260771,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_162541.wav",
+      "origin_start": 3.8941950113378683,
+      "origin_end": 7.679523809523809,
+      "mixture_start": 2.755416852643378,
+      "mixture_end": 6.540765578610788,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_17908.wav",
+      "origin_start": 4.225487528344671,
+      "origin_end": 6.286303854875284,
+      "mixture_start": 1.4952204675093017,
+      "mixture_end": 3.5560579463030657,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car horn and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_2dist_139_rep3.json b/data/audio_mixtures_no_speech/train/city_2dist_139_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..1610fc01b4eed867ead9f6ce378c38d33a23097b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_139_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "city_2dist_139_rep3",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "car_horn",
+    "hammer"
+  ],
+  "audio_file": "city_2dist_139_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p225/p225_219.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.013038548752834,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_066.mp3",
+      "origin_start": 51.65764172335601,
+      "origin_end": 61.65764172335601,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/esc-50_2-100648-A-43.wav",
+      "origin_start": 0.3505668934240363,
+      "origin_end": 3.4405442176870746,
+      "mixture_start": 4.077067872138903,
+      "mixture_end": 7.167056159427935,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_61302.wav",
+      "origin_start": 2.066621315192744,
+      "origin_end": 5.254331065759637,
+      "mixture_start": 1.751237340211428,
+      "mixture_end": 4.938952376597266,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car horn and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_2dist_140_rep4.json b/data/audio_mixtures_no_speech/train/city_2dist_140_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..5de2954c7aa1454d90683ce50686862313c1124e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_140_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "city_2dist_140_rep4",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "helicopter",
+    "fire_alarm"
+  ],
+  "audio_file": "city_2dist_140_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p281/p281_148.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.0732879818594103,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_065.mp3",
+      "origin_start": 34.76712018140589,
+      "origin_end": 44.76712018140589,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_3-154926-A-40.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9156462585034013,
+      "mixture_start": 2.8767514029419834,
+      "mixture_end": 4.792397661445385,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 2.2634920634920634,
+      "origin_end": 5.641043083900227,
+      "mixture_start": 0.4832375583284236,
+      "mixture_end": 3.860794025777932,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_2dist_155_rep3.json b/data/audio_mixtures_no_speech/train/city_2dist_155_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..54d263dc1ac7da16b51b6ce814e9623d5b1d1322
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_155_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "city_2dist_155_rep3",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "ringtone",
+    "footsteps"
+  ],
+  "audio_file": "city_2dist_155_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_285.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.6282766439909295,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_101.mp3",
+      "origin_start": 207.94487528344672,
+      "origin_end": 217.94487528344672,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167535.wav",
+      "origin_start": 0.1439455782312925,
+      "origin_end": 2.8929478458049886,
+      "mixture_start": 4.302707147374315,
+      "mixture_end": 7.051723322609467,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_138462.wav",
+      "origin_start": 0.40746031746031747,
+      "origin_end": 2.8190022675736963,
+      "mixture_start": 2.83735765588715,
+      "mixture_end": 5.248902814340187,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_2dist_165_rep4.json b/data/audio_mixtures_no_speech/train/city_2dist_165_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..e5933e5539c0e8c6973f23cf01525d9233d96993
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_165_rep4.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "city_2dist_165_rep4",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "boom"
+  ],
+  "audio_file": "city_2dist_165_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_099.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.733560090702948,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_078.mp3",
+      "origin_start": 260.9767573696145,
+      "origin_end": 270.9767573696145,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_365903.wav",
+      "origin_start": 0.009183673469387756,
+      "origin_end": 2.249863945578231,
+      "mixture_start": 3.330389284555532,
+      "mixture_end": 5.571083043110512,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_270882.wav",
+      "origin_start": 0.8462358276643991,
+      "origin_end": 2.933197278911565,
+      "mixture_start": 6.045254751832844,
+      "mixture_end": 8.132235483508696,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_2dist_169_rep4.json b/data/audio_mixtures_no_speech/train/city_2dist_169_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..9ec8933bfda8ccb8099eb0fc343ffcd937ad30ae
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_169_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "city_2dist_169_rep4",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "fireworks",
+    "train_horn"
+  ],
+  "audio_file": "city_2dist_169_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p234/p234_044.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9153968253968254,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_001.mp3",
+      "origin_start": 265.4612698412698,
+      "origin_end": 275.4612698412698,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/esc-50_1-25781-A-48.wav",
+      "origin_start": 0.27859410430839004,
+      "origin_end": 4.113537414965986,
+      "mixture_start": 2.2947754013053068,
+      "mixture_end": 6.129734849041543,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "train_horn",
+      "display_name": "train horn",
+      "original_path": "distractors/train/train_horn/fsd50k_332415.wav",
+      "origin_start": 0.0564172335600907,
+      "origin_end": 3.9924943310657595,
+      "mixture_start": 5.415393468040096,
+      "mixture_end": 9.351474555344126,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and train horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_2dist_187_rep2.json b/data/audio_mixtures_no_speech/train/city_2dist_187_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..227eaa5b94bc66175ddc25d90f370f3113e7a2d9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_187_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "city_2dist_187_rep2",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "engine",
+    "helicopter"
+  ],
+  "audio_file": "city_2dist_187_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_056.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.301360544217687,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_BAw342Xqxhs_chunk_004.mp3",
+      "origin_start": 231.71269841269842,
+      "origin_end": 241.71269841269842,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/fsd50k_377297.wav",
+      "origin_start": 3.7810204081632652,
+      "origin_end": 6.6020181405895695,
+      "mixture_start": 4.04671974754816,
+      "mixture_end": 6.867733854130374,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_2-188822-D-40.wav",
+      "origin_start": 1.408684807256236,
+      "origin_end": 4.195600907029479,
+      "mixture_start": 0.2112319881259206,
+      "mixture_end": 2.998154916813877,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_2dist_193_rep2.json b/data/audio_mixtures_no_speech/train/city_2dist_193_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..2bc69e45ea41cfc501d4a34913a945ed441ad449
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_193_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "city_2dist_193_rep2",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "sneeze"
+  ],
+  "audio_file": "city_2dist_193_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_083.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.712517006802721,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_080.mp3",
+      "origin_start": 130.10639455782314,
+      "origin_end": 140.10639455782314,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/esc-50_2-87799-A-24.wav",
+      "origin_start": 0.1894784580498866,
+      "origin_end": 2.6213832199546485,
+      "mixture_start": 2.298717028442024,
+      "mixture_end": 4.730641061255163,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_181217.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6965759637188209,
+      "mixture_start": 8.719176919956748,
+      "mixture_end": 9.41577555941253,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_3dist_209_rep4.json b/data/audio_mixtures_no_speech/train/city_3dist_209_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..b997368672e11561a4f82fdcfa1832be6f6e726c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_209_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "city_3dist_209_rep4",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "fire_alarm",
+    "hammer",
+    "siren"
+  ],
+  "audio_file": "city_3dist_209_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p240/p240_157.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.503401360544218,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_077.mp3",
+      "origin_start": 26.812902494331066,
+      "origin_end": 36.81290249433106,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 6.721700680272109,
+      "origin_end": 10.394172335600906,
+      "mixture_start": 5.55332269475193,
+      "mixture_end": 9.225815631217914,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_273975.wav",
+      "origin_start": 7.313038548752835,
+      "origin_end": 9.516938775510203,
+      "mixture_start": 0.4306574974694393,
+      "mixture_end": 2.6345620887528858,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/val/siren/esc-50_4-67358-A-42.wav",
+      "origin_start": 0.042222222222222223,
+      "origin_end": 2.2471428571428573,
+      "mixture_start": 3.747304799143752,
+      "mixture_end": 5.952234427679007,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and hammer and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and hammer and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and siren and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep fire alarm and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep fire alarm and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove fire alarm and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove fire alarm and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove hammer and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_3dist_214_rep4.json b/data/audio_mixtures_no_speech/train/city_3dist_214_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..0759747a60e2c0c4089a81a4dd4249da16257927
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_214_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "city_3dist_214_rep4",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "helicopter",
+    "car_horn"
+  ],
+  "audio_file": "city_3dist_214_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_193.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.501814058956916,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/City/asmr_City_sXJLT3kYdhk_chunk_003.mp3",
+      "origin_start": 177.44927437641724,
+      "origin_end": 187.44927437641724,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_215822.wav",
+      "origin_start": 2.9050566893424037,
+      "origin_end": 5.49827664399093,
+      "mixture_start": 3.126905204474115,
+      "mixture_end": 5.720126530958875,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_2-188822-D-40.wav",
+      "origin_start": 1.5906802721088436,
+      "origin_end": 4.779909297052154,
+      "mixture_start": 0.6707102709939965,
+      "mixture_end": 3.859958972407142,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_433578.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.2770975056689342,
+      "mixture_start": 7.646154340240894,
+      "mixture_end": 8.923251845909828,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and helicopter and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and helicopter and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and car horn and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and car horn and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep cellphone buzz vibrating alert and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove cellphone buzz vibrating alert and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove cellphone buzz vibrating alert and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and car horn and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_3dist_226_rep3.json b/data/audio_mixtures_no_speech/train/city_3dist_226_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..3c8efa819ffdd5230771f5b675f3db31d2c213a4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_226_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "city_3dist_226_rep3",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "car_horn",
+    "fire_alarm"
+  ],
+  "audio_file": "city_3dist_226_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_052.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.058480725623583,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_065.mp3",
+      "origin_start": 198.27034013605441,
+      "origin_end": 208.27034013605441,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_87080.wav",
+      "origin_start": 14.854716553287982,
+      "origin_end": 18.247369614512472,
+      "mixture_start": 6.353798582612481,
+      "mixture_end": 9.74645387166559,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_364839.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0448979591836736,
+      "mixture_start": 4.153360798088051,
+      "mixture_end": 5.1982587572717245,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/val/fire_alarm/fsd50k_270643.wav",
+      "origin_start": 2.2901133786848074,
+      "origin_end": 4.827278911564626,
+      "mixture_start": 1.5957995040526052,
+      "mixture_end": 4.132969736150661,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and car horn and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and car horn and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep car horn and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep fireworks and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and car horn and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove fireworks and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove fireworks and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove car horn and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_3dist_233_rep3.json b/data/audio_mixtures_no_speech/train/city_3dist_233_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..cd2fa80729fd83a73daeb873fda311c4c9664980
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_233_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "city_3dist_233_rep3",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "cough",
+    "footsteps"
+  ],
+  "audio_file": "city_3dist_233_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_282.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9056689342403628,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_038.mp3",
+      "origin_start": 282.74433106575964,
+      "origin_end": 292.74433106575964,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_182857.wav",
+      "origin_start": 4.3631746031746035,
+      "origin_end": 6.371587301587302,
+      "mixture_start": 1.260875501682145,
+      "mixture_end": 3.2693051804158513,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_17167.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5804988662131519,
+      "mixture_start": 6.490590196619933,
+      "mixture_end": 7.071089062833085,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_275088.wav",
+      "origin_start": 0.845827664399093,
+      "origin_end": 4.654965986394558,
+      "mixture_start": 4.6153533805651925,
+      "mixture_end": 8.424511160746828,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cough and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cough and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and footsteps and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep cellphone buzz vibrating alert and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep cellphone buzz vibrating alert and cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove cellphone buzz vibrating alert and cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove cellphone buzz vibrating alert and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and footsteps and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_3dist_244_rep3.json b/data/audio_mixtures_no_speech/train/city_3dist_244_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..2a4c2336ad3cfaea83ae2b4da221d467124e3fbf
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_244_rep3.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "city_3dist_244_rep3",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "train_horn",
+    "alarm_clock",
+    "fire_alarm"
+  ],
+  "audio_file": "city_3dist_244_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p278/p278_244.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.571065759637189,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_034.mp3",
+      "origin_start": 67.04816326530612,
+      "origin_end": 77.04816326530612,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "train_horn",
+      "display_name": "train horn",
+      "original_path": "distractors/train/train_horn/fsd50k_18529.wav",
+      "origin_start": 0.4571655328798186,
+      "origin_end": 2.7186621315192743,
+      "mixture_start": 0.5395570926221479,
+      "mixture_end": 2.801070757158366,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_342664.wav",
+      "origin_start": 5.751020408163265,
+      "origin_end": 8.184603174603174,
+      "mixture_start": 7.221800437749143,
+      "mixture_end": 9.655400117438022,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 0.3114965986394558,
+      "origin_end": 2.923514739229025,
+      "mixture_start": 3.6107758807360937,
+      "mixture_end": 6.222810313660103,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove train horn and alarm clock and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and alarm clock and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and fire alarm and remove train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep train horn and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep train horn and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn and alarm clock and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and fire alarm and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove alarm clock and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_3dist_249_rep3.json b/data/audio_mixtures_no_speech/train/city_3dist_249_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..a332c2ea719ed71c5eb74f9946f4c5bb05294aa1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_249_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "city_3dist_249_rep3",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "drill",
+    "birds_chirping"
+  ],
+  "audio_file": "city_3dist_249_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p265/p265_057.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.762426303854875,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/City/asmr_City_KkXLEHqzYZk_chunk_042.mp3",
+      "origin_start": 17.797732426303856,
+      "origin_end": 27.797732426303856,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_217989.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9366213151927437,
+      "mixture_start": 3.9527134365845,
+      "mixture_end": 4.889334751777244,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/val/drill/fsd50k_50415.wav",
+      "origin_start": 2.1488662131519276,
+      "origin_end": 5.389818594104308,
+      "mixture_start": 2.474490007758036,
+      "mixture_end": 5.715445021690421,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_108773.wav",
+      "origin_start": 0.001564625850340136,
+      "origin_end": 2.583265306122449,
+      "mixture_start": 6.15106706072267,
+      "mixture_end": 8.732779392270526,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and drill",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and drill and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "drill",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and drill and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "drill",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove drill and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep drill and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep drill and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep car alarm and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and drill and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove car alarm and drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove car alarm and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and birds chirping and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_3dist_259_rep2.json b/data/audio_mixtures_no_speech/train/city_3dist_259_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..1998df25c770533a918038603cc019222a7c3aea
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_259_rep2.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "city_3dist_259_rep2",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "cellphone_buzz_vibrating_alert",
+    "dog"
+  ],
+  "audio_file": "city_3dist_259_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p267/p267_092.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.262721088435374,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_058.mp3",
+      "origin_start": 41.53018140589569,
+      "origin_end": 51.53018140589569,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/val/car_alarm/fsd50k_422051.wav",
+      "origin_start": 5.4031972789115645,
+      "origin_end": 7.494489795918367,
+      "mixture_start": 1.443975162533395,
+      "mixture_end": 3.535281353635301,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_134862.wav",
+      "origin_start": 0.44884353741496597,
+      "origin_end": 3.1433333333333335,
+      "mixture_start": 6.00371702718223,
+      "mixture_end": 8.698213806079156,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/esc-50_2-118072-A-0.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0100680272108844,
+      "mixture_start": 4.516339151242042,
+      "mixture_end": 5.526407178452927,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and cellphone buzz vibrating alert and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and cellphone buzz vibrating alert and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and dog and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and dog and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and cellphone buzz vibrating alert and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove car alarm and cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and dog and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and dog and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_3dist_262_rep3.json b/data/audio_mixtures_no_speech/train/city_3dist_262_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..ee6d201e3424fbf5ebfba083c3163c927ab8bcb9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_262_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "city_3dist_262_rep3",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "dog",
+    "gunshot"
+  ],
+  "audio_file": "city_3dist_262_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_293.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.484081632653061,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_030.mp3",
+      "origin_start": 191.8408390022676,
+      "origin_end": 201.8408390022676,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/val/sneeze/fsd50k_23752.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6733786848072563,
+      "mixture_start": 8.308203531090518,
+      "mixture_end": 8.981582215897774,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_11722.wav",
+      "origin_start": 0.11122448979591837,
+      "origin_end": 2.2567120181405897,
+      "mixture_start": 6.73682791792781,
+      "mixture_end": 8.882323659180887,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_49512.wav",
+      "origin_start": 4.00734693877551,
+      "origin_end": 6.692018140589569,
+      "mixture_start": 3.0356491382405313,
+      "mixture_end": 5.720329845325122,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and dog and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and dog and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep dog and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep sneeze and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and dog and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove sneeze and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and remove sneeze and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and gunshot and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_3dist_268_rep2.json b/data/audio_mixtures_no_speech/train/city_3dist_268_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..9f3eb355b46e96ccdfec7a0c080f4c108d31876a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_268_rep2.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "city_3dist_268_rep2",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "cellphone_buzz_vibrating_alert",
+    "glass_breaking"
+  ],
+  "audio_file": "city_3dist_268_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p278/p278_364.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.1407256235827665,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_038.mp3",
+      "origin_start": 274.8138321995465,
+      "origin_end": 284.8138321995465,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/val/car_alarm/fsd50k_422051.wav",
+      "origin_start": 1.3796371882086167,
+      "origin_end": 3.67530612244898,
+      "mixture_start": 2.8469515736268436,
+      "mixture_end": 5.142625880525257,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_256210.wav",
+      "origin_start": 0.10596371882086168,
+      "origin_end": 2.199455782312925,
+      "mixture_start": 5.335748607768481,
+      "mixture_end": 7.4292504703368785,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/esc-50_2-173607-A-39.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9388662131519274,
+      "mixture_start": 7.567858260622594,
+      "mixture_end": 9.506724473774522,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and cellphone buzz vibrating alert and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and cellphone buzz vibrating alert and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and glass breaking and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep car alarm and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep car alarm and cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove car alarm and cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove car alarm and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and glass breaking and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_3dist_274_rep2.json b/data/audio_mixtures_no_speech/train/city_3dist_274_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..0f10f6fe4f76cdf54233da5f265f6f9fa1e7654e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_274_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "city_3dist_274_rep2",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "engine",
+    "hammer",
+    "jackhammer"
+  ],
+  "audio_file": "city_3dist_274_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_251.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.7736054421768706,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_BAw342Xqxhs_chunk_008.mp3",
+      "origin_start": 57.399410430839005,
+      "origin_end": 67.399410430839,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/val/engine/esc-50_4-195451-A-44.wav",
+      "origin_start": 2.3046258503401362,
+      "origin_end": 4.654285714285714,
+      "mixture_start": 5.311113940052362,
+      "mixture_end": 7.66078929710291,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/val/hammer/fsd50k_143590.wav",
+      "origin_start": 0.06219954648526077,
+      "origin_end": 2.710997732426304,
+      "mixture_start": 6.944688190389063,
+      "mixture_end": 9.593486485481147,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386298.wav",
+      "origin_start": 1.0036507936507937,
+      "origin_end": 3.19140589569161,
+      "mixture_start": 3.547097951474839,
+      "mixture_end": 5.7348635642398875,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and hammer and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and hammer and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "hammer",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep hammer and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and jackhammer and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep engine and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove engine and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and jackhammer and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and remove hammer and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/city_3dist_285_rep2.json b/data/audio_mixtures_no_speech/train/city_3dist_285_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..c63e428ff5dfe6ed6df422cb75da1eb76268381c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_285_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "city_3dist_285_rep2",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "ringtone",
+    "boom",
+    "footsteps"
+  ],
+  "audio_file": "city_3dist_285_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_118.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.909160997732426,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/City/asmr_City_KkXLEHqzYZk_chunk_014.mp3",
+      "origin_start": 167.5302267573696,
+      "origin_end": 177.5302267573696,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_122266.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5589342403628118,
+      "mixture_start": 3.177780071264017,
+      "mixture_end": 3.736714311626829,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_344686.wav",
+      "origin_start": 0.010317460317460317,
+      "origin_end": 2.2357596371882087,
+      "mixture_start": 4.67803365840976,
+      "mixture_end": 6.903487898603318,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_362249.wav",
+      "origin_start": 4.520340136054422,
+      "origin_end": 7.106780045351474,
+      "mixture_start": 0.4968613446751543,
+      "mixture_end": 3.0833140852471885,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and boom and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and boom and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep boom and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep ringtone and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and boom and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove ringtone and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and footsteps and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove boom and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_008_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_008_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..db3144d7f5c968139937b4bfd5741ad5a6aa67d2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_008_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "coffee_shop_1dist_008_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "drill"
+  ],
+  "audio_file": "coffee_shop_1dist_008_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p241/p241_046.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.478253968253968,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_034.mp3",
+      "origin_start": 73.70886621315192,
+      "origin_end": 83.70886621315192,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_96159.wav",
+      "origin_start": 0.2541043083900227,
+      "origin_end": 4.190589569160998,
+      "mixture_start": 0.677378266122089,
+      "mixture_end": 4.613877711671322,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_022_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_022_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..13910eb98c216ae119cf7207add773a3aaffb55e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_022_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "coffee_shop_1dist_022_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "fire_alarm"
+  ],
+  "audio_file": "coffee_shop_1dist_022_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_232.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.773628117913832,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_078.mp3",
+      "origin_start": 252.51721088435374,
+      "origin_end": 262.51721088435374,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/val/fire_alarm/fsd50k_270643.wav",
+      "origin_start": 1.8232879818594103,
+      "origin_end": 5.055714285714286,
+      "mixture_start": 0.7829299686221428,
+      "mixture_end": 4.015365307497872,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_023_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_023_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..240d1cc9d4dc793025cc406fed27a49468e541d4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_023_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "coffee_shop_1dist_023_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "coffee_shop_1dist_023_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_397.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.1585714285714284,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_059.mp3",
+      "origin_start": 161.19256235827663,
+      "origin_end": 171.19256235827663,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_320135.wav",
+      "origin_start": 0.6099092970521542,
+      "origin_end": 2.6857596371882084,
+      "mixture_start": 4.5128499596638445,
+      "mixture_end": 6.588706162290007,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_025_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_025_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..c045ddbe788e9018c88d6e35c0a70e291a306b81
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_025_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "coffee_shop_1dist_025_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "footsteps"
+  ],
+  "audio_file": "coffee_shop_1dist_025_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_461.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8161224489795917,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_040.mp3",
+      "origin_start": 119.36727891156463,
+      "origin_end": 129.36727891156463,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/esc-50_2-209473-A-25.wav",
+      "origin_start": 1.1354195011337869,
+      "origin_end": 4.550997732426304,
+      "mixture_start": 5.742390428147454,
+      "mixture_end": 9.157989658781494,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_042_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_042_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..1892511e059132706d449f6503f8252a8aa3e152
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_042_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "coffee_shop_1dist_042_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "drill"
+  ],
+  "audio_file": "coffee_shop_1dist_042_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p270/p270_093.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.417596371882086,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_080.mp3",
+      "origin_start": 212.44736961451247,
+      "origin_end": 222.44736961451247,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_386274.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.393174603174603,
+      "mixture_start": 5.714523679388017,
+      "mixture_end": 7.1077209582995815,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_043_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_043_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..dec275488b8f76e14b0fad1c2e2aa5f179ccab30
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_043_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "coffee_shop_1dist_043_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "fireworks"
+  ],
+  "audio_file": "coffee_shop_1dist_043_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p266/p266_130.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8801587301587301,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_048.mp3",
+      "origin_start": 226.86857142857144,
+      "origin_end": 236.86857142857144,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_109737.wav",
+      "origin_start": 4.725124716553288,
+      "origin_end": 7.778956916099773,
+      "mixture_start": 1.998828797817571,
+      "mixture_end": 5.0526621750477565,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_056_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_056_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..1da8a25d1668a796a6e7826d64d108088adc53d0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_056_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "coffee_shop_1dist_056_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "footsteps"
+  ],
+  "audio_file": "coffee_shop_1dist_056_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p245/p245_004.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.317959183673469,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_052.mp3",
+      "origin_start": 203.63945578231292,
+      "origin_end": 213.63945578231292,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_366111.wav",
+      "origin_start": 0.3822902494331066,
+      "origin_end": 2.8275510204081633,
+      "mixture_start": 3.1368699888780394,
+      "mixture_end": 5.582137132949978,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_067_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_067_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..4190f7f0c9d2e3421ede31138e4c7f72c988a632
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_067_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "coffee_shop_1dist_067_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "coffee_shop_1dist_067_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_041.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.183083900226757,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_012.mp3",
+      "origin_start": 208.609410430839,
+      "origin_end": 218.609410430839,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_1-76831-A-42.wav",
+      "origin_start": 1.6932426303854875,
+      "origin_end": 4.864149659863946,
+      "mixture_start": 0.625579999876769,
+      "mixture_end": 3.796495140713926,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_068_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_068_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..10ab32ccde2af4c75a2906bad20863c5063725e3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_068_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "coffee_shop_1dist_068_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "coffee_shop_1dist_068_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p243/p243_068.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.3305215419501133,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_028.mp3",
+      "origin_start": 282.8872562358277,
+      "origin_end": 292.8872562358277,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_170573.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8359183673469388,
+      "mixture_start": 3.3752134091221464,
+      "mixture_end": 4.211131776469085,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_069_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_069_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..8e5a5dd7681a10b9a3e90c09474b6049a568598a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_069_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "coffee_shop_1dist_069_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "car_alarm"
+  ],
+  "audio_file": "coffee_shop_1dist_069_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p241/p241_005.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.8277777777777775,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_015.mp3",
+      "origin_start": 101.4581179138322,
+      "origin_end": 111.4581179138322,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_365903.wav",
+      "origin_start": 0.0646031746031746,
+      "origin_end": 2.5602267573696147,
+      "mixture_start": 6.180312692439693,
+      "mixture_end": 8.67594663019139,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_084_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_084_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..83847b86b71d931757acb0e6d8ce982d72865f22
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_084_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "coffee_shop_1dist_084_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "fireworks"
+  ],
+  "audio_file": "coffee_shop_1dist_084_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p245/p245_258.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.3333333333333335,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_023.mp3",
+      "origin_start": 33.847414965986395,
+      "origin_end": 43.847414965986395,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/val/fireworks/fsd50k_422079.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9868480725623583,
+      "mixture_start": 5.737652433909782,
+      "mixture_end": 6.72450050647214,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_092_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_092_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..51715b09b00e71aade4003ad0853f74e8833ad2d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_092_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "coffee_shop_1dist_092_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "hammer"
+  ],
+  "audio_file": "coffee_shop_1dist_092_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_353.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.094126984126984,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_009.mp3",
+      "origin_start": 140.34024943310658,
+      "origin_end": 150.34024943310658,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_319529.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6617687074829932,
+      "mixture_start": 9.248583776332257,
+      "mixture_end": 9.91035248381525,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_093_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_093_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..2c636c04ac36296fcadcbceff9fa9d4986a20282
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_093_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "coffee_shop_1dist_093_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "engine"
+  ],
+  "audio_file": "coffee_shop_1dist_093_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_181.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.562879818594104,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_041.mp3",
+      "origin_start": 71.51922902494331,
+      "origin_end": 81.51922902494331,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/esc-50_2-106486-A-44.wav",
+      "origin_start": 1.5045124716553289,
+      "origin_end": 3.9518820861678003,
+      "mixture_start": 2.295951293056147,
+      "mixture_end": 4.743332594588779,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_096_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_096_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..59802f754f10b255f1c120c9269d9b9fb7f8db18
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_096_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "coffee_shop_1dist_096_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "helicopter"
+  ],
+  "audio_file": "coffee_shop_1dist_096_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_475.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9477777777777776,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_017.mp3",
+      "origin_start": 16.115986394557822,
+      "origin_end": 26.115986394557822,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_1-172649-B-40.wav",
+      "origin_start": 1.2760997732426305,
+      "origin_end": 3.7984353741496597,
+      "mixture_start": 6.385569918078097,
+      "mixture_end": 8.907908036971708,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_1dist_100_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_100_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..525ff4168449dc4c9e2f381b5324866d6da60e7b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_100_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "coffee_shop_1dist_100_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "coffee_shop_1dist_100_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p281/p281_256.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.05843537414966,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_074.mp3",
+      "origin_start": 94.04492063492063,
+      "origin_end": 104.04492063492063,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_117567.wav",
+      "origin_start": 3.9288662131519274,
+      "origin_end": 6.315079365079365,
+      "mixture_start": 4.159326965238327,
+      "mixture_end": 6.545542262315099,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_105_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_105_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..4637e5bfd5c12c38191b66f0845af8e98590ad53
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_105_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "coffee_shop_2dist_105_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "footsteps"
+  ],
+  "audio_file": "coffee_shop_2dist_105_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_299.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.039138321995464,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_083.mp3",
+      "origin_start": 69.78965986394557,
+      "origin_end": 79.78965986394557,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_138111.wav",
+      "origin_start": 4.549977324263039,
+      "origin_end": 7.531746031746032,
+      "mixture_start": 2.975224382895349,
+      "mixture_end": 5.957010884586767,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/val/footsteps/fsd50k_166306.wav",
+      "origin_start": 0.8758503401360545,
+      "origin_end": 3.0994104308390025,
+      "mixture_start": 7.298462506359379,
+      "mixture_end": 9.522039451846318,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_108_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_108_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..8bfa7a9ba59fd57560f0b27430a131a012689dd5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_108_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "coffee_shop_2dist_108_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "fireworks",
+    "jackhammer"
+  ],
+  "audio_file": "coffee_shop_2dist_108_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p278/p278_241.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.71281179138322,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_014.mp3",
+      "origin_start": 253.79691609977326,
+      "origin_end": 263.7969160997732,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_237750.wav",
+      "origin_start": 3.869092970521542,
+      "origin_end": 7.369818594104308,
+      "mixture_start": 6.068630744754495,
+      "mixture_end": 9.569376930274014,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_400991.wav",
+      "origin_start": 7.513650793650793,
+      "origin_end": 10.636666666666667,
+      "mixture_start": 2.605460137919629,
+      "mixture_end": 5.7284911493364525,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_109_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_109_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..228bda749c1239117b7cc0b0996145556c10352d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_109_rep4.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "coffee_shop_2dist_109_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "boom"
+  ],
+  "audio_file": "coffee_shop_2dist_109_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p261/p261_104.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0928344671201815,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_070.mp3",
+      "origin_start": 46.25365079365079,
+      "origin_end": 56.25365079365079,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_150981.wav",
+      "origin_start": 5.769727891156463,
+      "origin_end": 8.316848072562358,
+      "mixture_start": 5.546799024112227,
+      "mixture_end": 8.09393916219345,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_434427.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9620861678004535,
+      "mixture_start": 3.9702946525083758,
+      "mixture_end": 5.932380820308829,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_113_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_113_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..0b4b204bf07493ca4810f4f9ae297d365068cbc9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_113_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "coffee_shop_2dist_113_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "footsteps",
+    "glass_breaking"
+  ],
+  "audio_file": "coffee_shop_2dist_113_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_417.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6901360544217687,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_006.mp3",
+      "origin_start": 98.90278911564626,
+      "origin_end": 108.90278911564626,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_166295.wav",
+      "origin_start": 0.7921541950113379,
+      "origin_end": 3.815238095238095,
+      "mixture_start": 3.184363698039725,
+      "mixture_end": 6.207468167388788,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_420356.wav",
+      "origin_start": 0.010839002267573696,
+      "origin_end": 2.0370068027210886,
+      "mixture_start": 1.1332549272682362,
+      "mixture_end": 3.1594331884561457,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_136_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_136_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..7d4a8c325ecaa8653d8b933bd947555ef933541d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_136_rep1.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "coffee_shop_2dist_136_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "ringtone",
+    "car_horn"
+  ],
+  "audio_file": "coffee_shop_2dist_136_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_147.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.7353061224489794,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_069.mp3",
+      "origin_start": 37.866077097505666,
+      "origin_end": 47.866077097505666,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_163562.wav",
+      "origin_start": 2.3019954648526078,
+      "origin_end": 4.578979591836735,
+      "mixture_start": 6.263186743288069,
+      "mixture_end": 8.540186630277919,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/esc-50_1-26177-A-43.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8459863945578232,
+      "mixture_start": 4.737489454486236,
+      "mixture_end": 6.58347584904406,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_142_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_142_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..84e75d35f145b52b6667ac20bc20d43220475d4a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_142_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "coffee_shop_2dist_142_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "hammer",
+    "siren"
+  ],
+  "audio_file": "coffee_shop_2dist_142_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_162.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.5413378684807255,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_010.mp3",
+      "origin_start": 116.51170068027211,
+      "origin_end": 126.51170068027211,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_395863.wav",
+      "origin_start": 10.261451247165533,
+      "origin_end": 12.90716553287982,
+      "mixture_start": 4.398732508241494,
+      "mixture_end": 7.044463363907221,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/val/siren/esc-50_4-102871-A-42.wav",
+      "origin_start": 0.7608843537414965,
+      "origin_end": 3.216394557823129,
+      "mixture_start": 6.274943173560445,
+      "mixture_end": 8.7304583603697,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_145_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_145_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..c4ffb7b9f6bb4acab1ac51f3071710e70b2d2e59
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_145_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "coffee_shop_2dist_145_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "computer_typing",
+    "gunshot"
+  ],
+  "audio_file": "coffee_shop_2dist_145_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_113.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.3741496598639458,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_052.mp3",
+      "origin_start": 243.23099773242632,
+      "origin_end": 253.23099773242632,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/fsd50k_257259.wav",
+      "origin_start": 7.160090702947846,
+      "origin_end": 10.010589569160997,
+      "mixture_start": 6.766135985273891,
+      "mixture_end": 9.616641196390109,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_150139.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9287981859410431,
+      "mixture_start": 6.633827299794909,
+      "mixture_end": 7.5626254857359525,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_152_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_152_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..c0a2c10416d0d3fc6e7d220029d7b83aa4d52284
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_152_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "coffee_shop_2dist_152_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "computer_typing",
+    "jackhammer"
+  ],
+  "audio_file": "coffee_shop_2dist_152_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_109.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3943537414965985,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_074.mp3",
+      "origin_start": 243.57684807256237,
+      "origin_end": 253.57684807256237,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/fsd50k_155569.wav",
+      "origin_start": 5.559727891156463,
+      "origin_end": 8.424126984126984,
+      "mixture_start": 6.4739494716649535,
+      "mixture_end": 9.338363592545363,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386331.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5804988662131519,
+      "mixture_start": 8.99331163848242,
+      "mixture_end": 9.57381050469557,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_155_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_155_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..c4b3c0a9e30ac81c996958e608346e15e19ca7ac
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_155_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "coffee_shop_2dist_155_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "car_horn",
+    "footsteps"
+  ],
+  "audio_file": "coffee_shop_2dist_155_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p261/p261_065.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9493424036281177,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_023.mp3",
+      "origin_start": 288.0912698412698,
+      "origin_end": 298.0912698412698,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_162541.wav",
+      "origin_start": 4.89562358276644,
+      "origin_end": 8.366621315192743,
+      "mixture_start": 5.6337722480723365,
+      "mixture_end": 9.104771692470502,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_405632.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6834467120181407,
+      "mixture_start": 2.3020634785604184,
+      "mixture_end": 3.985510190578559,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_164_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_164_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..b000225f6be02a939a446e054cdc61600c8fc32f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_164_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "coffee_shop_2dist_164_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "engine",
+    "boom"
+  ],
+  "audio_file": "coffee_shop_2dist_164_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_007.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.310249433106576,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_008.mp3",
+      "origin_start": 63.499002267573694,
+      "origin_end": 73.4990022675737,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/esc-50_2-78651-A-44.wav",
+      "origin_start": 1.0193650793650795,
+      "origin_end": 3.032018140589569,
+      "mixture_start": 5.76482709241663,
+      "mixture_end": 7.777485773956554,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/val/boom/fsd50k_218721.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.5325170068027212,
+      "mixture_start": 2.3918125210492653,
+      "mixture_end": 3.9243295278519863,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_170_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_170_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..b9153310f464bd5dba637d4f65638c61f401ee0f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_170_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "coffee_shop_2dist_170_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "engine"
+  ],
+  "audio_file": "coffee_shop_2dist_170_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_367.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3900226757369616,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_058.mp3",
+      "origin_start": 217.33478458049888,
+      "origin_end": 227.33478458049888,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/esc-50_3-151212-A-24.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9404081632653061,
+      "mixture_start": 4.513914654520193,
+      "mixture_end": 5.454322817785499,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/esc-50_2-78651-A-44.wav",
+      "origin_start": 1.0129931972789115,
+      "origin_end": 4.930362811791383,
+      "mixture_start": 1.8357485150627442,
+      "mixture_end": 5.75314000240321,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_173_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_173_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..cd5567cbb6bc6c80c55e89c63e74dbf31e4132b7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_173_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "coffee_shop_2dist_173_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "cough"
+  ],
+  "audio_file": "coffee_shop_2dist_173_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p245/p245_254.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.689501133786848,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_063.mp3",
+      "origin_start": 12.541632653061225,
+      "origin_end": 22.541632653061225,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_170573.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8359183673469388,
+      "mixture_start": 0.11675081558245864,
+      "mixture_end": 0.9526691829293974,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_399627.wav",
+      "origin_start": 0.01868480725623583,
+      "origin_end": 3.020498866213152,
+      "mixture_start": 1.0569272870331166,
+      "mixture_end": 4.058744462214015,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_174_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_174_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..8319c383cc54140156ea1742b0977d6611d868f4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_174_rep1.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "coffee_shop_2dist_174_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "fireworks",
+    "car_horn"
+  ],
+  "audio_file": "coffee_shop_2dist_174_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p271/p271_431.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.501519274376417,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_029.mp3",
+      "origin_start": 34.983174603174604,
+      "origin_end": 44.983174603174604,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_198348.wav",
+      "origin_start": 8.187437641723356,
+      "origin_end": 11.917800453514738,
+      "mixture_start": 1.9944485314098663,
+      "mixture_end": 5.72481162218338,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_164627.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1493877551020408,
+      "mixture_start": 7.245053512410531,
+      "mixture_end": 8.394441267512573,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_182_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_182_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..34e5ab5973de53c9f4cf2389d78bfb78d79fa4f3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_182_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "coffee_shop_2dist_182_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "dog",
+    "footsteps"
+  ],
+  "audio_file": "coffee_shop_2dist_182_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_250.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.689750566893424,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_067.mp3",
+      "origin_start": 122.32503401360545,
+      "origin_end": 132.32503401360543,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/esc-50_1-59513-A-0.wav",
+      "origin_start": 1.6348526077097505,
+      "origin_end": 4.303242630385488,
+      "mixture_start": 4.419811744876097,
+      "mixture_end": 7.088207511627049,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_422745.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0731519274376418,
+      "mixture_start": 6.1234652833054675,
+      "mixture_end": 7.196617210743109,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_187_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_187_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..aa6dada7895abd9e706d350a7311c9873ff4c953
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_187_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "coffee_shop_2dist_187_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "slam"
+  ],
+  "audio_file": "coffee_shop_2dist_187_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p244/p244_048.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.014195011337868,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_083.mp3",
+      "origin_start": 25.538662131519274,
+      "origin_end": 35.538662131519274,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_61262_1.wav",
+      "origin_start": 9.135918367346939,
+      "origin_end": 12.126530612244897,
+      "mixture_start": 1.230345110439126,
+      "mixture_end": 4.220960188194809,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_406197.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.5905668934240362,
+      "mixture_start": 4.520857241172513,
+      "mixture_end": 6.111424134596549,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_191_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_191_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..5d3dcf588946b0e61f048013e6c68fcd02ae3b3c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_191_rep1.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "coffee_shop_2dist_191_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "engine"
+  ],
+  "audio_file": "coffee_shop_2dist_191_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p268/p268_375.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.842562358276644,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_011.mp3",
+      "origin_start": 256.6496598639456,
+      "origin_end": 266.6496598639456,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_241892.wav",
+      "origin_start": 9.64578231292517,
+      "origin_end": 12.421519274376417,
+      "mixture_start": 6.352413922964882,
+      "mixture_end": 9.128164996873641,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/esc-50_3-154758-A-44.wav",
+      "origin_start": 1.9813605442176871,
+      "origin_end": 4.8665079365079364,
+      "mixture_start": 3.844146700179182,
+      "mixture_end": 6.7293135100542045,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_193_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_193_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..b6644170c86190816ddcd73a4b92281efef2728f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_193_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "coffee_shop_2dist_193_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "fire_alarm",
+    "hammer"
+  ],
+  "audio_file": "coffee_shop_2dist_193_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_205.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.253333333333333,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_031.mp3",
+      "origin_start": 13.412108843537416,
+      "origin_end": 23.412108843537414,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/val/fire_alarm/fsd50k_270643.wav",
+      "origin_start": 1.4861904761904763,
+      "origin_end": 3.5558049886621315,
+      "mixture_start": 5.78224134145056,
+      "mixture_end": 7.851858034816143,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_25062.wav",
+      "origin_start": 0.7992743764172335,
+      "origin_end": 4.306031746031746,
+      "mixture_start": 1.079007984919555,
+      "mixture_end": 4.585767734727823,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_196_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_196_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..13214db1db60fc4d66fa6d86566f58856243afde
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_196_rep1.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "coffee_shop_2dist_196_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "dog"
+  ],
+  "audio_file": "coffee_shop_2dist_196_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p244/p244_359.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2463492063492065,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_051.mp3",
+      "origin_start": 181.96326530612245,
+      "origin_end": 191.96326530612245,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_30037.wav",
+      "origin_start": 0.10752834467120181,
+      "origin_end": 2.6386848072562357,
+      "mixture_start": 6.095188165935282,
+      "mixture_end": 8.626360247152359,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/val/dog/fsd50k_117271.wav",
+      "origin_start": 4.957800453514739,
+      "origin_end": 7.544104308390023,
+      "mixture_start": 3.4943563503971253,
+      "mixture_end": 6.080675111869985,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_2dist_199_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_199_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..5a0fbcb1acfc05dbbc88379d583bf0f5022ebef8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_199_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "coffee_shop_2dist_199_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "jackhammer"
+  ],
+  "audio_file": "coffee_shop_2dist_199_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_224.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.7993650793650793,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_046.mp3",
+      "origin_start": 94.42859410430839,
+      "origin_end": 104.42859410430839,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_241985.wav",
+      "origin_start": 1.8894331065759638,
+      "origin_end": 4.058253968253968,
+      "mixture_start": 3.2745669510238424,
+      "mixture_end": 5.443409044377358,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386331.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5804988662131519,
+      "mixture_start": 4.995666418480221,
+      "mixture_end": 5.576165284693373,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_205_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_205_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..f48bf9beadc8f977f38ea264e9ecca694c667867
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_205_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "coffee_shop_3dist_205_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "footsteps",
+    "jackhammer",
+    "slam"
+  ],
+  "audio_file": "coffee_shop_3dist_205_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_342.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.5427891156462583,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_027.mp3",
+      "origin_start": 173.93303854875285,
+      "origin_end": 183.93303854875285,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_217984.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9156462585034013,
+      "mixture_start": 6.189233191320933,
+      "mixture_end": 8.104879449824335,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_400991.wav",
+      "origin_start": 3.799546485260771,
+      "origin_end": 5.915918367346939,
+      "mixture_start": 2.3437328521534453,
+      "mixture_end": 4.460118613808087,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/val/slam/fsd50k_94254.wav",
+      "origin_start": 0.10943310657596372,
+      "origin_end": 2.319795918367347,
+      "mixture_start": 4.58957910052937,
+      "mixture_end": 6.799961998285891,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and jackhammer and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep jackhammer and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and slam and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and jackhammer and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove footsteps and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and slam and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_211_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_211_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..9aadfe933161fd32c4c7d9b32eb77871aeb8b16a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_211_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "coffee_shop_3dist_211_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "helicopter",
+    "ringtone",
+    "fire_alarm"
+  ],
+  "audio_file": "coffee_shop_3dist_211_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p265/p265_114.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.309546485260771,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_026.mp3",
+      "origin_start": 200.49204081632652,
+      "origin_end": 210.49204081632652,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_1-172649-F-40.wav",
+      "origin_start": 2.1023809523809525,
+      "origin_end": 4.410657596371882,
+      "mixture_start": 0.12944776548617212,
+      "mixture_end": 2.4377437305830085,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_234566.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1261678004535147,
+      "mixture_start": 6.7570852426129,
+      "mixture_end": 7.883253043066414,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 3.1713378684807254,
+      "origin_end": 5.196734693877551,
+      "mixture_start": 1.5175629556220345,
+      "mixture_end": 3.542978323687895,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and ringtone and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "ringtone",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and ringtone and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "ringtone",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and fire alarm and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and fire alarm and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep helicopter and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and ringtone and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and fire alarm and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove ringtone and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_243_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_243_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..873e7c10210612c278a32beb5c204a2527690644
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_243_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "coffee_shop_3dist_243_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "jackhammer",
+    "slam"
+  ],
+  "audio_file": "coffee_shop_3dist_243_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p225/p225_151.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.5868253968253967,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_035.mp3",
+      "origin_start": 226.99875283446713,
+      "origin_end": 236.99875283446713,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/val/cellphone_buzz_vibrating_alert/fsd50k_369840.wav",
+      "origin_start": 0.3522222222222222,
+      "origin_end": 3.2836961451247166,
+      "mixture_start": 0.7625630013384823,
+      "mixture_end": 3.69405678880962,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/val/jackhammer/fsd50k_386297.wav",
+      "origin_start": 6.058956916099773,
+      "origin_end": 8.867891156462585,
+      "mixture_start": 3.7528074257977506,
+      "mixture_end": 6.561751776523724,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_421477.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5340362811791384,
+      "mixture_start": 0.006068679789092177,
+      "mixture_end": 0.5401276367051919,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and jackhammer and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and jackhammer and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove slam and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep jackhammer and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and slam and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep cellphone buzz vibrating alert and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove cellphone buzz vibrating alert and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cellphone buzz vibrating alert and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove jackhammer and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_251_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_251_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..736d132d641c685e44ed352f23f8b44e14b0a099
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_251_rep3.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "coffee_shop_3dist_251_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "ringtone",
+    "jackhammer"
+  ],
+  "audio_file": "coffee_shop_3dist_251_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p257/p257_024.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.335192743764172,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_040.mp3",
+      "origin_start": 53.17192743764172,
+      "origin_end": 63.17192743764172,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_166055.wav",
+      "origin_start": 1.8810204081632653,
+      "origin_end": 5.558526077097506,
+      "mixture_start": 3.8955370282710904,
+      "mixture_end": 7.573057916347193,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_201946.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.5325170068027212,
+      "mixture_start": 3.0565495712002697,
+      "mixture_end": 4.589066578002991,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386240.wav",
+      "origin_start": 0.040680272108843535,
+      "origin_end": 2.3672108843537414,
+      "mixture_start": 0.014534115834094696,
+      "mixture_end": 2.341085864764305,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and ringtone and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep ringtone and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep applause and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove applause and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove applause and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and jackhammer and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_252_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_252_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..753a026eb276c7c687f8316809bdcd21e97ff7fa
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_252_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "coffee_shop_3dist_252_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "helicopter",
+    "glass_breaking",
+    "gunshot"
+  ],
+  "audio_file": "coffee_shop_3dist_252_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p270/p270_335.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.944875283446712,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_006.mp3",
+      "origin_start": 107.40408163265306,
+      "origin_end": 117.40408163265306,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_2-37806-D-40.wav",
+      "origin_start": 1.6943537414965986,
+      "origin_end": 4.426893424036281,
+      "mixture_start": 0.09832326903456673,
+      "mixture_end": 2.830872214129141,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_344271.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6153061224489796,
+      "mixture_start": 0.6955820310374287,
+      "mixture_end": 1.3109108292233698,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_36815.wav",
+      "origin_start": 5.105986394557823,
+      "origin_end": 7.156689342403628,
+      "mixture_start": 7.738600964928686,
+      "mixture_end": 9.789319231240931,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and glass breaking and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and glass breaking and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep glass breaking and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep helicopter and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and glass breaking and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and glass breaking and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove helicopter and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and gunshot and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_256_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_256_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..8d54f04021fd25b0ef4156a2e301680d0caa079d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_256_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "coffee_shop_3dist_256_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "ringtone",
+    "computer_typing"
+  ],
+  "audio_file": "coffee_shop_3dist_256_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_023.wav",
+      "origin_start": 0.0,
+      "origin_end": 9.349297052154196,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_032.mp3",
+      "origin_start": 46.48922902494331,
+      "origin_end": 56.48922902494331,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_61651.wav",
+      "origin_start": 1.240702947845805,
+      "origin_end": 4.3770294784580495,
+      "mixture_start": 3.8964710636502806,
+      "mixture_end": 7.032816621563494,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167548.wav",
+      "origin_start": 2.7098866213151926,
+      "origin_end": 5.629410430839002,
+      "mixture_start": 1.4157251951438314,
+      "mixture_end": 4.3352540328095674,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/val/computer_typing/esc-50_4-172742-A-32.wav",
+      "origin_start": 0.023605442176870748,
+      "origin_end": 2.5293877551020407,
+      "mixture_start": 7.487267631825512,
+      "mixture_end": 9.993065033491208,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and ringtone and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "computer_typing"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep ringtone and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "computer_typing"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep applause and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove applause and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove applause and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove ringtone and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_257_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_257_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..75ec629d26538e9b055b83f56cf26cb77844c741
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_257_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "coffee_shop_3dist_257_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "boom",
+    "hammer",
+    "siren"
+  ],
+  "audio_file": "coffee_shop_3dist_257_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_095.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.950861678004535,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_023.mp3",
+      "origin_start": 7.756145124716554,
+      "origin_end": 17.756145124716554,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_186952.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0797278911564625,
+      "mixture_start": 1.4820744166930662,
+      "mixture_end": 2.5618023078495287,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_70071.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1261678004535147,
+      "mixture_start": 5.6597898971401674,
+      "mixture_end": 6.785957697593682,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/val/siren/esc-50_4-121532-A-42.wav",
+      "origin_start": 0.0935374149659864,
+      "origin_end": 2.53124716553288,
+      "mixture_start": 2.0631771199658075,
+      "mixture_end": 4.50089524288635,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and hammer and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and hammer and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and keep hammer and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and siren and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and hammer and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove boom and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and siren and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and siren and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_263_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_263_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..de07fc525e6fdf41ba3dc11669c5103ff26475e4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_263_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "coffee_shop_3dist_263_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "helicopter",
+    "hammer"
+  ],
+  "audio_file": "coffee_shop_3dist_263_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_276.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3902267573696143,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_063.mp3",
+      "origin_start": 169.30428571428573,
+      "origin_end": 179.30428571428573,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_369839.wav",
+      "origin_start": 2.60562358276644,
+      "origin_end": 6.436281179138322,
+      "mixture_start": 4.646203904571668,
+      "mixture_end": 8.476875443066248,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_3-68630-A-40.wav",
+      "origin_start": 1.359138321995465,
+      "origin_end": 4.824784580498866,
+      "mixture_start": 1.009306991673279,
+      "mixture_end": 4.474963015551599,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_218773.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8343764172335602,
+      "mixture_start": 3.561470823540102,
+      "mixture_end": 5.395847240773662,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and helicopter and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and helicopter and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and hammer and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and hammer and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep cellphone buzz vibrating alert and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and helicopter and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove cellphone buzz vibrating alert and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and hammer and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_268_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_268_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..3625e24966ca83ff97389f61492c9a6e474f147b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_268_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "coffee_shop_3dist_268_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "ringtone",
+    "alarm_clock",
+    "computer_typing"
+  ],
+  "audio_file": "coffee_shop_3dist_268_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p278/p278_053.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.5872562358276645,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_001.mp3",
+      "origin_start": 201.81140589569162,
+      "origin_end": 211.81140589569162,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167551.wav",
+      "origin_start": 0.20941043083900227,
+      "origin_end": 2.5729705215419503,
+      "mixture_start": 5.449015816866501,
+      "mixture_end": 7.8125909777958915,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_204684.wav",
+      "origin_start": 2.5104308390022676,
+      "origin_end": 6.421836734693877,
+      "mixture_start": 2.2882550199926674,
+      "mixture_end": 6.1996705215001775,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/esc-50_3-155568-A-32.wav",
+      "origin_start": 0.8373242630385488,
+      "origin_end": 3.7081632653061223,
+      "mixture_start": 6.947600747009394,
+      "mixture_end": 9.818457510672392,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone and alarm clock and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "computer_typing"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep alarm clock and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "computer_typing"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and computer typing and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep ringtone and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and alarm clock and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and computer typing and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove alarm clock and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_269_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_269_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..741b9c9f36de580ba1748b70d26e84960b5613cf
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_269_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "coffee_shop_3dist_269_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "computer_typing",
+    "fire_alarm",
+    "hammer"
+  ],
+  "audio_file": "coffee_shop_3dist_269_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p271/p271_307.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.7791609977324265,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_013.mp3",
+      "origin_start": 89.2830612244898,
+      "origin_end": 99.2830612244898,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/fsd50k_390459.wav",
+      "origin_start": 4.102834467120181,
+      "origin_end": 6.794399092970521,
+      "mixture_start": 6.904108132032559,
+      "mixture_end": 9.595690858330157,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/val/fire_alarm/fsd50k_270643.wav",
+      "origin_start": 0.6679365079365079,
+      "origin_end": 3.5570975056689345,
+      "mixture_start": 1.03867246719185,
+      "mixture_end": 3.9278510020017405,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_103628.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5224489795918368,
+      "mixture_start": 3.5771353127284486,
+      "mixture_end": 4.099584292320285,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing and fire alarm and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "fire_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and fire alarm and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "fire_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep fire alarm and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and hammer and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep computer typing and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove computer typing and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and hammer and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove fire alarm and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_270_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_270_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..f7c3caab3b799a2798f1cca10ef6928493099c95
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_270_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "coffee_shop_3dist_270_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "boom",
+    "car_horn",
+    "footsteps"
+  ],
+  "audio_file": "coffee_shop_3dist_270_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p270/p270_021.wav",
+      "origin_start": 0.0,
+      "origin_end": 9.68954648526077,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_036.mp3",
+      "origin_start": 233.21614512471655,
+      "origin_end": 243.21614512471655,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_186945.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7430385487528345,
+      "mixture_start": 5.428845778736135,
+      "mixture_end": 6.17188432748897,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/val/car_horn/esc-50_4-175856-A-43.wav",
+      "origin_start": 0.3543764172335601,
+      "origin_end": 3.7088888888888887,
+      "mixture_start": 0.9360506470742881,
+      "mixture_end": 4.290568448810077,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/val/footsteps/esc-50_4-194979-A-25.wav",
+      "origin_start": 2.595691609977324,
+      "origin_end": 4.680861678004535,
+      "mixture_start": 6.373251493477936,
+      "mixture_end": 8.458431116212132,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove boom and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and car horn and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "car_horn",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and car horn and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "car_horn",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and footsteps and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep boom and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep boom and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove boom and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and footsteps and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove car horn and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_280_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_280_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..e3c01b280d4633e4a8d638337744fbaccf7a2803
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_280_rep3.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "coffee_shop_3dist_280_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "car_horn",
+    "computer_typing"
+  ],
+  "audio_file": "coffee_shop_3dist_280_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_019.wav",
+      "origin_start": 0.0,
+      "origin_end": 9.603038548752835,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_031.mp3",
+      "origin_start": 232.9029931972789,
+      "origin_end": 242.9029931972789,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_108510.wav",
+      "origin_start": 1.5404308390022676,
+      "origin_end": 5.278888888888889,
+      "mixture_start": 2.363269667220385,
+      "mixture_end": 6.101728813547373,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/esc-50_1-17124-A-43.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6733786848072563,
+      "mixture_start": 0.8877803813533951,
+      "mixture_end": 1.5611590661606514,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/fsd50k_353711.wav",
+      "origin_start": 1.0112471655328799,
+      "origin_end": 3.0557596371882085,
+      "mixture_start": 0.5245971394031799,
+      "mixture_end": 2.569124725442193,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and car horn and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "computer_typing"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and car horn and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "car_horn",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep car horn and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "computer_typing"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and computer typing and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and car horn and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and car horn and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove applause and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove car horn and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_284_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_284_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..6e2be3ad3ce0517fd305af990120bba398102e09
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_284_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "coffee_shop_3dist_284_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "footsteps",
+    "siren"
+  ],
+  "audio_file": "coffee_shop_3dist_284_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_200.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.989251700680272,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_047.mp3",
+      "origin_start": 286.6404761904762,
+      "origin_end": 296.6404761904762,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_385829.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8475283446712019,
+      "mixture_start": 4.469819725201221,
+      "mixture_end": 5.317348069872423,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_195457.wav",
+      "origin_start": 0.13675736961451246,
+      "origin_end": 3.00875283446712,
+      "mixture_start": 1.3281425752418277,
+      "mixture_end": 4.200150855828937,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_3-51909-B-42.wav",
+      "origin_start": 2.2121088435374148,
+      "origin_end": 4.273174603174603,
+      "mixture_start": 0.11487283090952828,
+      "mixture_end": 2.1759543348503674,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and footsteps and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and footsteps and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and siren and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and siren and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and footsteps and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove cough and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove cough and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and siren and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_285_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_285_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..ada209372df4bf50b3626253fc68471938f36e84
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_285_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "coffee_shop_3dist_285_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "computer_typing",
+    "footsteps"
+  ],
+  "audio_file": "coffee_shop_3dist_285_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p258/p258_072.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9907256235827666,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_003.mp3",
+      "origin_start": 164.50664399092972,
+      "origin_end": 174.50664399092972,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_177835.wav",
+      "origin_start": 1.5944897959183673,
+      "origin_end": 3.6694104308390023,
+      "mixture_start": 5.719784376889268,
+      "mixture_end": 7.794725351280789,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/val/computer_typing/esc-50_4-172180-A-32.wav",
+      "origin_start": 1.4519047619047618,
+      "origin_end": 3.706598639455782,
+      "mixture_start": 7.477954400108466,
+      "mixture_end": 9.732660883497367,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/val/footsteps/fsd50k_319206.wav",
+      "origin_start": 0.009160997732426304,
+      "origin_end": 3.185170068027211,
+      "mixture_start": 0.4852258824490296,
+      "mixture_end": 3.66124758281193,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and computer typing and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and computer typing and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "computer_typing",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and footsteps and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep cough and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and computer typing and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and computer typing and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove cough and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing and footsteps and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_287_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_287_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..14ff0489aeca8bbc4cef477b37b2559d311229bd
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_287_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "coffee_shop_3dist_287_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "dog",
+    "footsteps"
+  ],
+  "audio_file": "coffee_shop_3dist_287_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p281/p281_037.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.0337868480725625,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_036.mp3",
+      "origin_start": 222.70034013605442,
+      "origin_end": 232.70034013605442,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_167078.wav",
+      "origin_start": 4.639614512471655,
+      "origin_end": 7.373832199546485,
+      "mixture_start": 0.2296534083351213,
+      "mixture_end": 2.963880471885881,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_84317.wav",
+      "origin_start": 0.029931972789115645,
+      "origin_end": 2.187437641723356,
+      "mixture_start": 7.403103357732166,
+      "mixture_end": 9.560615060402345,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_377491.wav",
+      "origin_start": 3.0907936507936506,
+      "origin_end": 6.76655328798186,
+      "mixture_start": 4.246295805031458,
+      "mixture_end": 7.922067874513454,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and dog and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove dog and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep dog and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and footsteps and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and dog and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and remove baby cry and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove dog and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_287_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_287_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..d13de321b5a01934fc416c02302104de4c0a694c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_287_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "coffee_shop_3dist_287_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "dog",
+    "footsteps"
+  ],
+  "audio_file": "coffee_shop_3dist_287_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_006.wav",
+      "origin_start": 0.0,
+      "origin_end": 7.725192743764173,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_000.mp3",
+      "origin_start": 264.1304761904762,
+      "origin_end": 274.1304761904762,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_151085.wav",
+      "origin_start": 0.557437641723356,
+      "origin_end": 2.745827664399093,
+      "mixture_start": 2.5461344974467544,
+      "mixture_end": 4.734534397758877,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_63261.wav",
+      "origin_start": 1.1098185941043084,
+      "origin_end": 3.7131519274376417,
+      "mixture_start": 6.2417593922544885,
+      "mixture_end": 8.84509793154443,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_431893.wav",
+      "origin_start": 1.0524489795918368,
+      "origin_end": 3.3094557823129254,
+      "mixture_start": 0.1918548949632273,
+      "mixture_end": 2.448881077038264,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and dog and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove dog and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep dog and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and footsteps and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and dog and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and remove baby cry and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove dog and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/coffee_shop_3dist_293_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_293_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..984f34d89dac89be6af0cd5628d360abc713fec6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_293_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "coffee_shop_3dist_293_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "footsteps",
+    "glass_breaking"
+  ],
+  "audio_file": "coffee_shop_3dist_293_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_218.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9462585034013604,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_080.mp3",
+      "origin_start": 255.21521541950113,
+      "origin_end": 265.21521541950113,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_140723.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.497687074829932,
+      "mixture_start": 0.10998743561949605,
+      "mixture_end": 1.607674510449428,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/val/footsteps/esc-50_4-117630-A-25.wav",
+      "origin_start": 0.6491383219954648,
+      "origin_end": 3.1706349206349205,
+      "mixture_start": 2.9824071543698194,
+      "mixture_end": 5.503920021689257,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_390727.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0448979591836736,
+      "mixture_start": 7.091061572845972,
+      "mixture_end": 8.135959532029645,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and footsteps and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "footsteps",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and footsteps and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "footsteps",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and glass breaking and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep fireworks and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and footsteps and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and footsteps and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and glass breaking and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and glass breaking and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_004_rep3.json b/data/audio_mixtures_no_speech/train/forest_1dist_004_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..5ba14746041a2a987fe3ef406d781efb6517271c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_004_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_004_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "cat"
+  ],
+  "audio_file": "forest_1dist_004_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p241/p241_012.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.037369614512472,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_015.mp3",
+      "origin_start": 169.07809523809524,
+      "origin_end": 179.07809523809524,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/esc-50_3-146972-A-5.wav",
+      "origin_start": 1.0987301587301588,
+      "origin_end": 3.889501133786848,
+      "mixture_start": 4.408585627261066,
+      "mixture_end": 7.199373957130928,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_006_rep1.json b/data/audio_mixtures_no_speech/train/forest_1dist_006_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..572a0905af28da6552a02e74d7659888460a75b4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_006_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_006_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "fireworks"
+  ],
+  "audio_file": "forest_1dist_006_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_328.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.4348299319727893,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_033.mp3",
+      "origin_start": 234.98256235827665,
+      "origin_end": 244.98256235827665,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/val/fireworks/esc-50_4-119648-B-48.wav",
+      "origin_start": 1.9858956916099773,
+      "origin_end": 4.545124716553288,
+      "mixture_start": 0.8976501859862188,
+      "mixture_end": 3.4568954439741266,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_006_rep2.json b/data/audio_mixtures_no_speech/train/forest_1dist_006_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..3c35370a62018bd12abb386de918aeb0c9a867f6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_006_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_006_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "fireworks"
+  ],
+  "audio_file": "forest_1dist_006_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_332.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.143628117913832,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_034.mp3",
+      "origin_start": 115.8227664399093,
+      "origin_end": 125.8227664399093,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/val/fireworks/esc-50_4-119647-D-48.wav",
+      "origin_start": 1.175827664399093,
+      "origin_end": 3.5645124716553287,
+      "mixture_start": 2.5814653451096143,
+      "mixture_end": 4.970150907526255,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_014_rep2.json b/data/audio_mixtures_no_speech/train/forest_1dist_014_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..cb202df18123bded4d35d3fdf124cad8f8063587
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_014_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_014_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "applause"
+  ],
+  "audio_file": "forest_1dist_014_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p236/p236_503.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.20328798185941,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_008.mp3",
+      "origin_start": 67.53281179138322,
+      "origin_end": 77.53281179138322,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/val/applause/fsd50k_196331.wav",
+      "origin_start": 0.5428344671201814,
+      "origin_end": 2.840498866213152,
+      "mixture_start": 6.661020009372517,
+      "mixture_end": 8.9586980961907,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_026_rep4.json b/data/audio_mixtures_no_speech/train/forest_1dist_026_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..c1d37cdcb0330558531e58a1df247a0055f9ae38
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_026_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "forest_1dist_026_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "footsteps"
+  ],
+  "audio_file": "forest_1dist_026_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_195.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.094421768707483,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_034.mp3",
+      "origin_start": 189.96873015873015,
+      "origin_end": 199.96873015873015,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_166303.wav",
+      "origin_start": 0.44467120181405895,
+      "origin_end": 2.548798185941043,
+      "mixture_start": 4.215853183511917,
+      "mixture_end": 6.319985634528843,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_032_rep1.json b/data/audio_mixtures_no_speech/train/forest_1dist_032_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..0f7cb695ce2949e26d33cd7ab8c8fdf6692db3f2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_032_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "forest_1dist_032_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "alarm_clock"
+  ],
+  "audio_file": "forest_1dist_032_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p268/p268_215.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.629251700680272,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_005.mp3",
+      "origin_start": 13.529138321995465,
+      "origin_end": 23.529138321995465,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_3-117793-A-37.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.393174603174603,
+      "mixture_start": 6.622735950752667,
+      "mixture_end": 8.015933229664231,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_047_rep3.json b/data/audio_mixtures_no_speech/train/forest_1dist_047_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..e409177f4936464cd5267829be229c3185a56956
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_047_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "forest_1dist_047_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "car_alarm"
+  ],
+  "audio_file": "forest_1dist_047_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p265/p265_293.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.1643537414965985,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_003.mp3",
+      "origin_start": 66.7937641723356,
+      "origin_end": 76.7937641723356,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_365903.wav",
+      "origin_start": 0.01292517006802721,
+      "origin_end": 2.4176190476190476,
+      "mixture_start": 6.77273473193858,
+      "mixture_end": 9.177448986945343,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_050_rep2.json b/data/audio_mixtures_no_speech/train/forest_1dist_050_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..500c49df35b701f2ad16a92b28e25d38aab68ea0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_050_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "forest_1dist_050_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "forest_1dist_050_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_282.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.056530612244898,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_001.mp3",
+      "origin_start": 92.45512471655329,
+      "origin_end": 102.45512471655329,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_215819.wav",
+      "origin_start": 9.240770975056689,
+      "origin_end": 12.94156462585034,
+      "mixture_start": 3.0273133777827326,
+      "mixture_end": 6.728120976952947,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_050_rep3.json b/data/audio_mixtures_no_speech/train/forest_1dist_050_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..a1d250ac4c8b54efc2399bf81c2f6184792440f9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_050_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "forest_1dist_050_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "forest_1dist_050_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p261/p261_239.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.6696598639455784,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_006.mp3",
+      "origin_start": 32.47462585034014,
+      "origin_end": 42.47462585034014,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_256210.wav",
+      "origin_start": 0.008344671201814058,
+      "origin_end": 2.0086167800453514,
+      "mixture_start": 5.635904093819205,
+      "mixture_end": 7.63619283936332,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_051_rep4.json b/data/audio_mixtures_no_speech/train/forest_1dist_051_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..faa372a3d1c9d0b0f371840a0e87bc35acb6f635
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_051_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_051_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "jackhammer"
+  ],
+  "audio_file": "forest_1dist_051_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_413.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.859342403628118,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_041.mp3",
+      "origin_start": 37.33,
+      "origin_end": 47.33,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_146261.wav",
+      "origin_start": 4.8848299319727895,
+      "origin_end": 7.394965986394558,
+      "mixture_start": 2.8450930623559945,
+      "mixture_end": 5.355246432433395,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_064_rep4.json b/data/audio_mixtures_no_speech/train/forest_1dist_064_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..5467c88475d56affe62a63cc1d91b3762ca59bce
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_064_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "forest_1dist_064_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "car_horn"
+  ],
+  "audio_file": "forest_1dist_064_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p240/p240_352.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.802154195011338,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_007.mp3",
+      "origin_start": 236.95961451247166,
+      "origin_end": 246.95961451247166,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_175847.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8808163265306121,
+      "mixture_start": 5.397867567999512,
+      "mixture_end": 7.278683894530124,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_072_rep2.json b/data/audio_mixtures_no_speech/train/forest_1dist_072_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..ff4105fa155fb11d6ec764b61ebc8ce506df22d8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_072_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_072_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "jackhammer"
+  ],
+  "audio_file": "forest_1dist_072_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p240/p240_282.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.6711791383219956,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_044.mp3",
+      "origin_start": 29.745578231292516,
+      "origin_end": 39.74557823129252,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386331.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5804988662131519,
+      "mixture_start": 5.03594816501164,
+      "mixture_end": 5.6164470312247925,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_073_rep2.json b/data/audio_mixtures_no_speech/train/forest_1dist_073_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..7357a5b1d96554e9c58639eba539ae7d3e3e5a71
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_073_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_073_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "cat"
+  ],
+  "audio_file": "forest_1dist_073_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_327.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.484081632653061,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_019.mp3",
+      "origin_start": 97.44913832199546,
+      "origin_end": 107.44913832199546,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/fsd50k_352226.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.4450113378684808,
+      "mixture_start": 5.815792898917989,
+      "mixture_end": 7.26080423678647,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_075_rep1.json b/data/audio_mixtures_no_speech/train/forest_1dist_075_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..c3efac3eb0d069279dd51a156bfa850954378398
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_075_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_075_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "applause"
+  ],
+  "audio_file": "forest_1dist_075_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p244/p244_078.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.309047619047619,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Forest/asmr_Forest_29XymHesxa0_chunk_022.mp3",
+      "origin_start": 68.91095238095238,
+      "origin_end": 78.91095238095238,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/val/applause/fsd50k_30038.wav",
+      "origin_start": 0.13873015873015873,
+      "origin_end": 4.0587301587301585,
+      "mixture_start": 1.9235355445712283,
+      "mixture_end": 5.843554098235759,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_081_rep2.json b/data/audio_mixtures_no_speech/train/forest_1dist_081_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..5fe046f6e5eb5bab7cb865de481b175a313c226c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_081_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_081_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "cricket"
+  ],
+  "audio_file": "forest_1dist_081_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p241/p241_291.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.057709750566893,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_014.mp3",
+      "origin_start": 34.60426303854875,
+      "origin_end": 44.60426303854875,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_89357.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8692063492063493,
+      "mixture_start": 7.44067956416316,
+      "mixture_end": 9.30988591336951,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_085_rep4.json b/data/audio_mixtures_no_speech/train/forest_1dist_085_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..6424f177c222ae56430e71654401c1576241c6ef
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_085_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_085_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "applause"
+  ],
+  "audio_file": "forest_1dist_085_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_393.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.507301587301587,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_037.mp3",
+      "origin_start": 81.14183673469388,
+      "origin_end": 91.14183673469388,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_432334.wav",
+      "origin_start": 0.8458730158730159,
+      "origin_end": 4.5790476190476195,
+      "mixture_start": 4.7820325166374404,
+      "mixture_end": 8.515213910835657,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_088_rep2.json b/data/audio_mixtures_no_speech/train/forest_1dist_088_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..487fa263ee7938fb1019f0ccf57270214774fa30
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_088_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_088_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "jackhammer"
+  ],
+  "audio_file": "forest_1dist_088_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_141.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.586417233560091,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_016.mp3",
+      "origin_start": 111.2068253968254,
+      "origin_end": 121.2068253968254,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386241.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.626938775510204,
+      "mixture_start": 0.9395607175343419,
+      "mixture_end": 1.566499493044546,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_090_rep2.json b/data/audio_mixtures_no_speech/train/forest_1dist_090_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..f6a5a854737b43714254c8527609d82d8688a8a3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_090_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_090_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "engine"
+  ],
+  "audio_file": "forest_1dist_090_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p243/p243_316.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.5886621315192744,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_007.mp3",
+      "origin_start": 112.11321995464853,
+      "origin_end": 122.11321995464853,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/val/engine/fsd50k_237170.wav",
+      "origin_start": 1.5989115646258503,
+      "origin_end": 5.038344671201814,
+      "mixture_start": 1.5687917961255677,
+      "mixture_end": 5.008233475815662,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_095_rep1.json b/data/audio_mixtures_no_speech/train/forest_1dist_095_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..37739f4c8725a879428e43efff6f00fd2f39ac2c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_095_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "forest_1dist_095_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "helicopter"
+  ],
+  "audio_file": "forest_1dist_095_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p237/p237_331.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.353628117913832,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_003.mp3",
+      "origin_start": 280.8943537414966,
+      "origin_end": 290.8943537414966,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/fsd50k_39983.wav",
+      "origin_start": 1.7864172335600907,
+      "origin_end": 4.304512471655329,
+      "mixture_start": 0.6144316193275284,
+      "mixture_end": 3.1325426970372354,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_095_rep4.json b/data/audio_mixtures_no_speech/train/forest_1dist_095_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..572636be1018096eae5658934cb8a9aa162fb1b7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_095_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "forest_1dist_095_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "helicopter"
+  ],
+  "audio_file": "forest_1dist_095_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p267/p267_191.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.456893424036281,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_012.mp3",
+      "origin_start": 59.03857142857143,
+      "origin_end": 69.03857142857143,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/fsd50k_251325.wav",
+      "origin_start": 17.309931972789116,
+      "origin_end": 19.4240589569161,
+      "mixture_start": 3.9609039593886815,
+      "mixture_end": 6.075052943678154,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_1dist_100_rep1.json b/data/audio_mixtures_no_speech/train/forest_1dist_100_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..ed37259bfa50b9d736f5ee04abedf00669b562b6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_100_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_100_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "forest_1dist_100_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_332.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.733832199546485,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_014.mp3",
+      "origin_start": 135.4769387755102,
+      "origin_end": 145.4769387755102,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_463879.wav",
+      "origin_start": 3.3800226757369614,
+      "origin_end": 5.5219954648526075,
+      "mixture_start": 2.6459260837252474,
+      "mixture_end": 4.787908087651045,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_101_rep2.json b/data/audio_mixtures_no_speech/train/forest_2dist_101_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..24be572dafb8d14d72038ad1310d401b5a5486d8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_101_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "forest_2dist_101_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "sneeze"
+  ],
+  "audio_file": "forest_2dist_101_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p267/p267_005.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.594603174603175,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_021.mp3",
+      "origin_start": 129.20473922902494,
+      "origin_end": 139.20473922902494,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_210733.wav",
+      "origin_start": 6.657981859410431,
+      "origin_end": 9.726371882086168,
+      "mixture_start": 3.451831015232826,
+      "mixture_end": 6.520222855443416,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_2-118104-A-21.wav",
+      "origin_start": 0.02489795918367347,
+      "origin_end": 2.5141043083900225,
+      "mixture_start": 5.8877297678143705,
+      "mixture_end": 8.376951495159217,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_110_rep3.json b/data/audio_mixtures_no_speech/train/forest_2dist_110_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..d9c47eb0ac6c51799a35d7ed8f34b0368937ee88
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_110_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "forest_2dist_110_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "siren"
+  ],
+  "audio_file": "forest_2dist_110_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_242.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.738412698412699,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_002.mp3",
+      "origin_start": 212.68013605442178,
+      "origin_end": 222.68013605442178,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_69585.wav",
+      "origin_start": 0.12192743764172335,
+      "origin_end": 3.875079365079365,
+      "mixture_start": 4.7858921081816055,
+      "mixture_end": 8.539055337091604,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-43806-A-42.wav",
+      "origin_start": 0.27643990929705214,
+      "origin_end": 3.8833560090702948,
+      "mixture_start": 0.3043033938869526,
+      "mixture_end": 3.91122294231441,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_117_rep2.json b/data/audio_mixtures_no_speech/train/forest_2dist_117_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..9bba631bc0bf30fb4e217f64194873789c13eae3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_117_rep2.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "forest_2dist_117_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "gunshot",
+    "siren"
+  ],
+  "audio_file": "forest_2dist_117_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_059.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.4185714285714286,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_030.mp3",
+      "origin_start": 97.28387755102041,
+      "origin_end": 107.28387755102041,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/val/gunshot/fsd50k_238242.wav",
+      "origin_start": 0.0023129251700680273,
+      "origin_end": 2.55015873015873,
+      "mixture_start": 0.5854914339211299,
+      "mixture_end": 3.1333531124708105,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-43806-A-42.wav",
+      "origin_start": 1.6281632653061224,
+      "origin_end": 4.017074829931973,
+      "mixture_start": 2.634783805618148,
+      "mixture_end": 5.023701693445919,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_124_rep1.json b/data/audio_mixtures_no_speech/train/forest_2dist_124_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..f800a6745b77e2e323acd7c47bd8cfbe551d8010
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_124_rep1.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "forest_2dist_124_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "footsteps",
+    "siren"
+  ],
+  "audio_file": "forest_2dist_124_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p264/p264_159.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.7161224489795917,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_003.mp3",
+      "origin_start": 18.586689342403627,
+      "origin_end": 28.586689342403627,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_377491.wav",
+      "origin_start": 3.6179818594104307,
+      "origin_end": 7.560566893424037,
+      "mixture_start": 4.7753696390295,
+      "mixture_end": 8.717965513860616,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-70936-A-42.wav",
+      "origin_start": 0.8261678004535148,
+      "origin_end": 4.8021768707482995,
+      "mixture_start": 1.105436280508178,
+      "mixture_end": 5.0814488705420375,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_128_rep1.json b/data/audio_mixtures_no_speech/train/forest_2dist_128_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..683276d6e54e51a884ee5d9646ca8145282b4f10
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_128_rep1.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "forest_2dist_128_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "fireworks",
+    "baby_cry"
+  ],
+  "audio_file": "forest_2dist_128_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_157.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.287732426303855,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_029.mp3",
+      "origin_start": 40.79816326530612,
+      "origin_end": 50.79816326530612,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/val/fireworks/fsd50k_205609.wav",
+      "origin_start": 0.10242630385487528,
+      "origin_end": 2.4159183673469387,
+      "mixture_start": 3.2531925971399036,
+      "mixture_end": 5.566702748797072,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_26761.wav",
+      "origin_start": 6.110294784580499,
+      "origin_end": 8.924897959183674,
+      "mixture_start": 1.1889929557528796,
+      "mixture_end": 4.003605850759091,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_135_rep1.json b/data/audio_mixtures_no_speech/train/forest_2dist_135_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..158c33988e681eef6abb07970f66dd8052599dad
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_135_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "forest_2dist_135_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "fireworks",
+    "dog"
+  ],
+  "audio_file": "forest_2dist_135_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p285/p285_057.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3501133786848074,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_027.mp3",
+      "origin_start": 50.11873015873016,
+      "origin_end": 60.11873015873016,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_13779.wav",
+      "origin_start": 3.294263038548753,
+      "origin_end": 6.959773242630385,
+      "mixture_start": 1.1035862684874391,
+      "mixture_end": 4.7690977078261,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/val/dog/fsd50k_347763.wav",
+      "origin_start": 0.40800453514739227,
+      "origin_end": 3.673877551020408,
+      "mixture_start": 6.501040809713615,
+      "mixture_end": 9.766918712183099,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_139_rep4.json b/data/audio_mixtures_no_speech/train/forest_2dist_139_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..905bb17188446755ae6cf9bc4a83355847c3db83
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_139_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "forest_2dist_139_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "birds_chirping",
+    "cat"
+  ],
+  "audio_file": "forest_2dist_139_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p262/p262_337.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.672267573696145,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_021.mp3",
+      "origin_start": 271.3940136054422,
+      "origin_end": 281.3940136054422,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/esc-50_1-54918-A-14.wav",
+      "origin_start": 1.5420861678004536,
+      "origin_end": 4.08843537414966,
+      "mixture_start": 1.5426013087859611,
+      "mixture_end": 4.088963963198641,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/fsd50k_62215.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7894784580498866,
+      "mixture_start": 5.320812481754852,
+      "mixture_end": 6.110290939804739,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_145_rep3.json b/data/audio_mixtures_no_speech/train/forest_2dist_145_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..2fb23d66bfcab7915d88cb1182b92a2012a7a93d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_145_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "forest_2dist_145_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "footsteps"
+  ],
+  "audio_file": "forest_2dist_145_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p225/p225_143.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.894965986394558,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_020.mp3",
+      "origin_start": 188.7524716553288,
+      "origin_end": 198.7524716553288,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_223183.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7546485260770975,
+      "mixture_start": 6.578994126969988,
+      "mixture_end": 7.333642653047086,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_166295.wav",
+      "origin_start": 1.1598866213151928,
+      "origin_end": 3.86312925170068,
+      "mixture_start": 1.528445415437132,
+      "mixture_end": 4.2317106399225155,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_146_rep2.json b/data/audio_mixtures_no_speech/train/forest_2dist_146_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..80b8210be6c9a67e411c16eb8ee9a67c832cf4a4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_146_rep2.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "forest_2dist_146_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "car_horn"
+  ],
+  "audio_file": "forest_2dist_146_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p236/p236_316.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.2189115646258504,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_030.mp3",
+      "origin_start": 90.56020408163265,
+      "origin_end": 100.56020408163265,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_70789.wav",
+      "origin_start": 0.9064625850340136,
+      "origin_end": 4.2562585034013605,
+      "mixture_start": 0.07791693196871251,
+      "mixture_end": 3.427728058770636,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/esc-50_2-100648-A-43.wav",
+      "origin_start": 2.2307936507936508,
+      "origin_end": 4.712471655328798,
+      "mixture_start": 4.245510768947569,
+      "mixture_end": 6.727209355814052,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_147_rep3.json b/data/audio_mixtures_no_speech/train/forest_2dist_147_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..104383d6dcc79c870f9c9467e7bdec0492f086b4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_147_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "forest_2dist_147_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "boom"
+  ],
+  "audio_file": "forest_2dist_147_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_170.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.646848072562358,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_010.mp3",
+      "origin_start": 141.75503401360544,
+      "origin_end": 151.75503401360544,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_1-72195-A-37.wav",
+      "origin_start": 0.044058956916099776,
+      "origin_end": 2.0795691609977323,
+      "mixture_start": 3.6652978377146175,
+      "mixture_end": 5.70082102018122,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/val/boom/fsd50k_366086.wav",
+      "origin_start": 1.8933786848072562,
+      "origin_end": 5.121315192743764,
+      "mixture_start": 0.6819414354340134,
+      "mixture_end": 3.909899748474828,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_149_rep2.json b/data/audio_mixtures_no_speech/train/forest_2dist_149_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..a37cdf2c660fed19c9c92a894112f75284c8afda
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_149_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "forest_2dist_149_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "cat",
+    "cricket"
+  ],
+  "audio_file": "forest_2dist_149_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p236/p236_134.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8183673469387753,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_59fHDWDhzkY_chunk_007.mp3",
+      "origin_start": 218.58433106575964,
+      "origin_end": 228.58433106575964,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/val/cat/fsd50k_110010.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.626938775510204,
+      "mixture_start": 6.391266708787298,
+      "mixture_end": 7.018205484297502,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/esc-50_3-155766-A-13.wav",
+      "origin_start": 0.00709750566893424,
+      "origin_end": 3.3853287981859412,
+      "mixture_start": 0.5553624099613932,
+      "mixture_end": 3.933604911341811,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cat and cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cat and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cat and keep cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cat and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_157_rep4.json b/data/audio_mixtures_no_speech/train/forest_2dist_157_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..0dbdcf328d5e539d274ef4d8f5ec87270b9ddd8f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_157_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "forest_2dist_157_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "cricket"
+  ],
+  "audio_file": "forest_2dist_157_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p270/p270_218.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.817278911564626,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_004.mp3",
+      "origin_start": 280.9042857142857,
+      "origin_end": 290.9042857142857,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_3-142605-A-21.wav",
+      "origin_start": 0.2910204081632653,
+      "origin_end": 3.030634920634921,
+      "mixture_start": 4.420693875780371,
+      "mixture_end": 7.160326284621893,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_80842.wav",
+      "origin_start": 7.356848072562358,
+      "origin_end": 10.498956916099774,
+      "mixture_start": 0.982845242530397,
+      "mixture_end": 4.124966740240764,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_162_rep3.json b/data/audio_mixtures_no_speech/train/forest_2dist_162_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..3fd3601fd1844ac1e0ab49e1384aa9dc9f0fa1bd
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_162_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "forest_2dist_162_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "boom"
+  ],
+  "audio_file": "forest_2dist_162_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_206.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.609455782312925,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_023.mp3",
+      "origin_start": 183.50244897959183,
+      "origin_end": 193.50244897959183,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_151147.wav",
+      "origin_start": 2.711043083900227,
+      "origin_end": 6.193990929705215,
+      "mixture_start": 4.498762225653975,
+      "mixture_end": 7.981721274674023,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_268828.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.799546485260771,
+      "mixture_start": 0.8726223364734738,
+      "mixture_end": 2.6721688217342447,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_170_rep1.json b/data/audio_mixtures_no_speech/train/forest_2dist_170_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..3c2ad9eadc173bd40b0572a41f15cb9e3b55ff8b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_170_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "forest_2dist_170_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "siren"
+  ],
+  "audio_file": "forest_2dist_170_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_235.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.674671201814059,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_016.mp3",
+      "origin_start": 127.47916099773242,
+      "origin_end": 137.47916099773244,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_271351_3.wav",
+      "origin_start": 13.007165532879819,
+      "origin_end": 15.047573696145125,
+      "mixture_start": 1.2232001715890044,
+      "mixture_end": 3.2636144504854316,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_1-31482-A-42.wav",
+      "origin_start": 1.0301133786848073,
+      "origin_end": 4.386893424036281,
+      "mixture_start": 3.286112511750559,
+      "mixture_end": 6.6429018443743,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_180_rep2.json b/data/audio_mixtures_no_speech/train/forest_2dist_180_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..6d07dd32001ae930982906fa8638c5afb31531c5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_180_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "forest_2dist_180_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "fireworks",
+    "footsteps"
+  ],
+  "audio_file": "forest_2dist_180_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_167.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0956009070294783,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_039.mp3",
+      "origin_start": 20.3056462585034,
+      "origin_end": 30.3056462585034,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/val/fireworks/fsd50k_209316.wav",
+      "origin_start": 5.637687074829932,
+      "origin_end": 9.577482993197279,
+      "mixture_start": 5.146271798107089,
+      "mixture_end": 9.086083206463787,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_68687.wav",
+      "origin_start": 4.832743764172336,
+      "origin_end": 8.134240362811791,
+      "mixture_start": 0.6822445297318807,
+      "mixture_end": 3.983742504081098,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_180_rep4.json b/data/audio_mixtures_no_speech/train/forest_2dist_180_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..5f4cc83a4cf574291651c138df82a7c921bcd3f9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_180_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "forest_2dist_180_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "fireworks",
+    "footsteps"
+  ],
+  "audio_file": "forest_2dist_180_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_205.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.253333333333333,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_016.mp3",
+      "origin_start": 99.88351473922903,
+      "origin_end": 109.88351473922903,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_46012.wav",
+      "origin_start": 4.563492063492063,
+      "origin_end": 6.865351473922902,
+      "mixture_start": 0.1348839747198931,
+      "mixture_end": 2.436747390499692,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_337281.wav",
+      "origin_start": 1.17984126984127,
+      "origin_end": 3.8849433106575963,
+      "mixture_start": 6.989839577760477,
+      "mixture_end": 9.694944290637014,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_2dist_199_rep4.json b/data/audio_mixtures_no_speech/train/forest_2dist_199_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..51b7c0c770a331e9a93aa75313de5aca03ca5422
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_199_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "forest_2dist_199_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "cat",
+    "dog"
+  ],
+  "audio_file": "forest_2dist_199_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p228/p228_370.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.9466666666666668,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_008.mp3",
+      "origin_start": 179.70086167800454,
+      "origin_end": 189.70086167800454,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/val/cat/esc-50_4-161303-B-5.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7894784580498866,
+      "mixture_start": 2.8179811191238793,
+      "mixture_end": 3.607459577173766,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_34872.wav",
+      "origin_start": 1.4058049886621315,
+      "origin_end": 5.185260770975057,
+      "mixture_start": 3.7423050812822196,
+      "mixture_end": 7.521774717474607,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cat and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cat and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and keep cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_206_rep1.json b/data/audio_mixtures_no_speech/train/forest_3dist_206_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..4edb4be8a60d229c8304c58aaadd533409a47c94
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_206_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "forest_3dist_206_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "cat",
+    "hammer"
+  ],
+  "audio_file": "forest_3dist_206_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p244/p244_288.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.272018140589569,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_043.mp3",
+      "origin_start": 205.00680272108843,
+      "origin_end": 215.00680272108843,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/esc-50_1-52266-A-24.wav",
+      "origin_start": 0.2507709750566893,
+      "origin_end": 3.392721088435374,
+      "mixture_start": 0.21037157850230193,
+      "mixture_end": 3.352338575342553,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/esc-50_2-110010-A-5.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5688888888888889,
+      "mixture_start": 8.067429148018986,
+      "mixture_end": 8.636318036907875,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_125659.wav",
+      "origin_start": 14.148684807256236,
+      "origin_end": 16.394353741496598,
+      "mixture_start": 6.59655460806017,
+      "mixture_end": 8.842230264218173,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cat and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and cat and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and cat and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "cat",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cat and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cat and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cat and hammer and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and keep cough and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep cough and cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and cat and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and remove cough and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove cat and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_207_rep4.json b/data/audio_mixtures_no_speech/train/forest_3dist_207_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..0c93a7c626a0d4a8f2f754e7c338697c107a525e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_207_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "forest_3dist_207_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "baby_cry",
+    "siren"
+  ],
+  "audio_file": "forest_3dist_207_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p237/p237_163.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.733401360544218,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_59fHDWDhzkY_chunk_003.mp3",
+      "origin_start": 70.692947845805,
+      "origin_end": 80.692947845805,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_166055.wav",
+      "origin_start": 2.3561678004535147,
+      "origin_end": 5.163990929705215,
+      "mixture_start": 6.208557562417813,
+      "mixture_end": 9.01639796129854,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_185575_2.wav",
+      "origin_start": 1.0942630385487528,
+      "origin_end": 4.714104308390023,
+      "mixture_start": 3.4127235390946837,
+      "mixture_end": 7.032570505812222,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-70938-A-42.wav",
+      "origin_start": 0.5458956916099773,
+      "origin_end": 2.627641723356009,
+      "mixture_start": 2.1640800245281886,
+      "mixture_end": 4.245844350291068,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and baby cry and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and baby cry and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and siren and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep applause and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and baby cry and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove applause and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and siren and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and siren and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_209_rep1.json b/data/audio_mixtures_no_speech/train/forest_3dist_209_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..a155a6ccd60e6630860fd8e0b271cf68f24ced37
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_209_rep1.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "forest_3dist_209_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "helicopter",
+    "birds_chirping",
+    "footsteps"
+  ],
+  "audio_file": "forest_3dist_209_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p270/p270_279.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6903174603174604,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_004.mp3",
+      "origin_start": 52.873333333333335,
+      "origin_end": 62.873333333333335,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_2-37806-D-40.wav",
+      "origin_start": 1.0219501133786848,
+      "origin_end": 4.555510204081632,
+      "mixture_start": 3.2890801041621636,
+      "mixture_end": 6.822654556364981,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_9325.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5804988662131519,
+      "mixture_start": 7.552665523383213,
+      "mixture_end": 8.133164389596365,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_388504.wav",
+      "origin_start": 1.2025850340136055,
+      "origin_end": 3.542403628117914,
+      "mixture_start": 6.286583195880564,
+      "mixture_end": 8.626409990718642,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "birds_chirping",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove helicopter and birds chirping and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and birds chirping and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep birds chirping and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and footsteps and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep helicopter and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and birds chirping and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove helicopter and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and footsteps and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_210_rep1.json b/data/audio_mixtures_no_speech/train/forest_3dist_210_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..6e908690775ff91244a5a6cd2c17d1166e08686a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_210_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "forest_3dist_210_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "cat",
+    "dog"
+  ],
+  "audio_file": "forest_3dist_210_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p278/p278_116.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.418027210884354,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_043.mp3",
+      "origin_start": 274.29848072562356,
+      "origin_end": 284.29848072562356,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_87604.wav",
+      "origin_start": 11.561927437641723,
+      "origin_end": 14.457913832199546,
+      "mixture_start": 2.524609620156615,
+      "mixture_end": 5.420617051931769,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/esc-50_3-95697-A-5.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9752380952380952,
+      "mixture_start": 5.178195991445883,
+      "mixture_end": 6.153434086683978,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/esc-50_3-136288-A-0.wav",
+      "origin_start": 1.4009750566893424,
+      "origin_end": 3.6508390022675736,
+      "mixture_start": 4.443084776247389,
+      "mixture_end": 6.692964560926759,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cat",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cat and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cat and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cat",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cat",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cat",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cat and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cat",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cat and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cat and dog and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and keep cellphone buzz vibrating alert and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep cellphone buzz vibrating alert and cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove cellphone buzz vibrating alert and cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and remove cellphone buzz vibrating alert and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cat and dog and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_220_rep3.json b/data/audio_mixtures_no_speech/train/forest_3dist_220_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..c9e3b98d1bced747f0a48dde15f4ff1902162102
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_220_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "forest_3dist_220_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "helicopter",
+    "cricket",
+    "hammer"
+  ],
+  "audio_file": "forest_3dist_220_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_221.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.782585034013605,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_034.mp3",
+      "origin_start": 46.988458049886624,
+      "origin_end": 56.988458049886624,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_2-37806-B-40.wav",
+      "origin_start": 2.215170068027211,
+      "origin_end": 4.894807256235827,
+      "mixture_start": 1.8847082378538176,
+      "mixture_end": 4.564352706554195,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_216217.wav",
+      "origin_start": 0.6762131519274377,
+      "origin_end": 4.316893424036281,
+      "mixture_start": 4.88647212927198,
+      "mixture_end": 8.527169252584237,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_125531.wav",
+      "origin_start": 3.3082312925170068,
+      "origin_end": 5.868548752834467,
+      "mixture_start": 0.11507106886452963,
+      "mixture_end": 2.6754075079339357,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove helicopter and cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove helicopter and cricket and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "cricket",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and cricket and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "cricket",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep cricket and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and hammer and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and cricket and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove helicopter and cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and hammer and keep cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cricket and hammer and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_234_rep2.json b/data/audio_mixtures_no_speech/train/forest_3dist_234_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..06b3216ff000902e79d3c767315a31b77ad9ac97
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_234_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "forest_3dist_234_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "drill",
+    "fireworks"
+  ],
+  "audio_file": "forest_3dist_234_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_372.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.4583219954648525,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_59fHDWDhzkY_chunk_002.mp3",
+      "origin_start": 108.37648526077098,
+      "origin_end": 118.37648526077098,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_150981.wav",
+      "origin_start": 2.711995464852608,
+      "origin_end": 5.211791383219954,
+      "mixture_start": 4.387223269250404,
+      "mixture_end": 6.887019430767507,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_236328.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7778684807256235,
+      "mixture_start": 5.538038987156712,
+      "mixture_end": 6.315907467882336,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_318967.wav",
+      "origin_start": 3.993854875283447,
+      "origin_end": 6.039455782312925,
+      "mixture_start": 6.865893499587181,
+      "mixture_end": 8.911503153178419,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and drill",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm and fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and drill and fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "drill",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and drill and fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "drill",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep drill and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep drill and fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "fireworks"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep car alarm and fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep car alarm and drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and drill and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove car alarm and fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and fireworks and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_256_rep1.json b/data/audio_mixtures_no_speech/train/forest_3dist_256_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..b6671738b0c428283f6f82089e43a2ec1323ccbe
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_256_rep1.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "forest_3dist_256_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "car_horn",
+    "dog"
+  ],
+  "audio_file": "forest_3dist_256_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p271/p271_438.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0529931972789117,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_012.mp3",
+      "origin_start": 154.33290249433108,
+      "origin_end": 164.33290249433108,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_326252.wav",
+      "origin_start": 4.317324263038548,
+      "origin_end": 7.111292517006802,
+      "mixture_start": 5.755298288676091,
+      "mixture_end": 8.549274322137569,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_399254.wav",
+      "origin_start": 0.0509297052154195,
+      "origin_end": 2.1883219954648525,
+      "mixture_start": 1.0063625595818375,
+      "mixture_end": 3.1437713777158645,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/val/dog/esc-50_4-194754-A-0.wav",
+      "origin_start": 0.8905668934240363,
+      "origin_end": 3.6590249433106576,
+      "mixture_start": 3.815652428378699,
+      "mixture_end": 6.5841215669151145,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and car horn and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and car horn and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and dog and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and dog and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep cellphone buzz vibrating alert and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and car horn and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove cellphone buzz vibrating alert and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove car horn and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_258_rep3.json b/data/audio_mixtures_no_speech/train/forest_3dist_258_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..3bb3f976e909071629f59393ede02b08810f4eea
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_258_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "forest_3dist_258_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "footsteps",
+    "jackhammer"
+  ],
+  "audio_file": "forest_3dist_258_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_260.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.2652607709750567,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_59fHDWDhzkY_chunk_011.mp3",
+      "origin_start": 208.39278911564625,
+      "origin_end": 218.39278911564625,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/esc-50_4-154443-A-24.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8126984126984127,
+      "mixture_start": 2.034257384941495,
+      "mixture_end": 2.8469557976399074,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_55064.wav",
+      "origin_start": 0.056666666666666664,
+      "origin_end": 3.31265306122449,
+      "mixture_start": 1.244593926538944,
+      "mixture_end": 4.500590416110838,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386245.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5108390022675737,
+      "mixture_start": 5.14982274874101,
+      "mixture_end": 5.6606617510085835,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and footsteps and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and footsteps and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and jackhammer and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and footsteps and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and footsteps and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and jackhammer and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and jackhammer and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_259_rep2.json b/data/audio_mixtures_no_speech/train/forest_3dist_259_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..4d8e5425884f3b677bb313d3bed31b700fd821e9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_259_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "forest_3dist_259_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "dog",
+    "siren"
+  ],
+  "audio_file": "forest_3dist_259_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_215.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.097074829931973,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_001.mp3",
+      "origin_start": 218.7544217687075,
+      "origin_end": 228.7544217687075,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_14268.wav",
+      "origin_start": 0.01673469387755102,
+      "origin_end": 3.9286167800453513,
+      "mixture_start": 5.696954814524312,
+      "mixture_end": 9.608849285137929,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_43787.wav",
+      "origin_start": 3.6675736961451246,
+      "origin_end": 6.740430839002268,
+      "mixture_start": 0.34494724888908024,
+      "mixture_end": 3.4178062707691987,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_382620.wav",
+      "origin_start": 0.8570748299319728,
+      "origin_end": 2.984784580498866,
+      "mixture_start": 3.97663118815904,
+      "mixture_end": 6.104362349579516,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and dog and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and siren and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep baby cry and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and dog and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and siren and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove dog and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_264_rep2.json b/data/audio_mixtures_no_speech/train/forest_3dist_264_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..1da8df226dd565c88d3fa85f50ecef2e44a5fccb
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_264_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "forest_3dist_264_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "boom",
+    "gunshot"
+  ],
+  "audio_file": "forest_3dist_264_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_408.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.014784580498866,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_039.mp3",
+      "origin_start": 106.77485260770975,
+      "origin_end": 116.77485260770975,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_349812.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6501587301587302,
+      "mixture_start": 6.849626140980471,
+      "mixture_end": 7.499784871139201,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_434427.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9620861678004535,
+      "mixture_start": 0.8703675884149255,
+      "mixture_end": 2.832453756215379,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_417689.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.2770975056689342,
+      "mixture_start": 4.46727275697492,
+      "mixture_end": 5.744370262643855,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and boom and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and boom and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and gunshot and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep fireworks and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep fireworks and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and boom and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove fireworks and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove boom and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_268_rep1.json b/data/audio_mixtures_no_speech/train/forest_3dist_268_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..736f471d486ef800c67b4ed3a4af9faada082099
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_268_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "forest_3dist_268_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "cat",
+    "jackhammer"
+  ],
+  "audio_file": "forest_3dist_268_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p229/p229_031.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.3953514739229025,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_030.mp3",
+      "origin_start": 207.57374149659864,
+      "origin_end": 217.57374149659864,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_145487.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.709342403628118,
+      "mixture_start": 8.098699738502098,
+      "mixture_end": 8.808042142130216,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/esc-50_3-95695-B-5.wav",
+      "origin_start": 0.35342403628117913,
+      "origin_end": 2.465963718820862,
+      "mixture_start": 5.817955168906576,
+      "mixture_end": 7.930497442360264,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386303.wav",
+      "origin_start": 1.8018820861678004,
+      "origin_end": 4.0515192743764175,
+      "mixture_start": 1.495222966485296,
+      "mixture_end": 3.7448751451131326,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cat and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and cat and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and cat and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "cat",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cat and jackhammer and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and keep cough and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep cough and cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cough and cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and jackhammer and keep cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove cat and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_279_rep2.json b/data/audio_mixtures_no_speech/train/forest_3dist_279_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..4408316448b49217e0ec55439a7ff8feac6ab09f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_279_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "forest_3dist_279_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "drill",
+    "ringtone",
+    "jackhammer"
+  ],
+  "audio_file": "forest_3dist_279_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p244/p244_320.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.1199092970521543,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_59fHDWDhzkY_chunk_012.mp3",
+      "origin_start": 36.11049886621315,
+      "origin_end": 46.11049886621315,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_386293.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.75,
+      "mixture_start": 4.323155997197962,
+      "mixture_end": 5.073155997197962,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167535.wav",
+      "origin_start": 1.8736054421768706,
+      "origin_end": 5.34281179138322,
+      "mixture_start": 4.608495297783804,
+      "mixture_end": 8.077722275331265,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386242.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8823582766439909,
+      "mixture_start": 1.5476965695316776,
+      "mixture_end": 2.4300548461756684,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and ringtone and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and ringtone and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and jackhammer and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep drill and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and ringtone and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove drill and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and jackhammer and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and remove ringtone and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_279_rep4.json b/data/audio_mixtures_no_speech/train/forest_3dist_279_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..0a50a6d72e3ab84b1b7eb10c5c721cabb4cb6d54
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_279_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "forest_3dist_279_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "drill",
+    "ringtone",
+    "jackhammer"
+  ],
+  "audio_file": "forest_3dist_279_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_175.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.697414965986394,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_032.mp3",
+      "origin_start": 2.266530612244898,
+      "origin_end": 12.266530612244898,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_386259.wav",
+      "origin_start": 0.6366666666666667,
+      "origin_end": 3.8951020408163264,
+      "mixture_start": 3.048225163704011,
+      "mixture_end": 6.306663647082241,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_186255.wav",
+      "origin_start": 4.871519274376417,
+      "origin_end": 7.805487528344671,
+      "mixture_start": 0.15224215871639374,
+      "mixture_end": 3.0862326204636195,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/val/jackhammer/fsd50k_386297.wav",
+      "origin_start": 2.361201814058957,
+      "origin_end": 4.8566439909297054,
+      "mixture_start": 5.9829074219735086,
+      "mixture_end": 8.478364545048505,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and ringtone and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and ringtone and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and jackhammer and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep drill and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and ringtone and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove drill and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and jackhammer and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and remove ringtone and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_284_rep1.json b/data/audio_mixtures_no_speech/train/forest_3dist_284_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..8d2f937a9baffc2dbc0094b1392a6570a11800d5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_284_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "forest_3dist_284_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "baby_cry",
+    "cat"
+  ],
+  "audio_file": "forest_3dist_284_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_008.wav",
+      "origin_start": 0.0,
+      "origin_end": 7.255192743764172,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_012.mp3",
+      "origin_start": 172.7527664399093,
+      "origin_end": 182.7527664399093,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/fsd50k_331052.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5224489795918368,
+      "mixture_start": 5.16726948264534,
+      "mixture_end": 5.689718462237177,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_243989_2.wav",
+      "origin_start": 4.068639455782313,
+      "origin_end": 7.715510204081633,
+      "mixture_start": 4.6467255019047355,
+      "mixture_end": 8.293605839359454,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/esc-50_2-83934-B-5.wav",
+      "origin_start": 0.05006802721088435,
+      "origin_end": 3.9485714285714284,
+      "mixture_start": 0.3586071482537561,
+      "mixture_end": 4.257122518204744,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and baby cry and cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "cat"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry and cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and cat and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "cat"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and cat and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry and remove cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and baby cry and keep cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cough and cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and cat and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_285_rep4.json b/data/audio_mixtures_no_speech/train/forest_3dist_285_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..af01a2536146121a3744720222f242394adb16de
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_285_rep4.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "forest_3dist_285_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "helicopter",
+    "birds_chirping"
+  ],
+  "audio_file": "forest_3dist_285_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p258/p258_324.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.142448979591837,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_005.mp3",
+      "origin_start": 238.69766439909296,
+      "origin_end": 248.69766439909296,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/val/cellphone_buzz_vibrating_alert/fsd50k_215818.wav",
+      "origin_start": 8.16954648526077,
+      "origin_end": 10.95360544217687,
+      "mixture_start": 1.2658541154513665,
+      "mixture_end": 4.049916607949315,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_3-68630-A-40.wav",
+      "origin_start": 0.05680272108843538,
+      "origin_end": 3.4873696145124717,
+      "mixture_start": 6.130408557690237,
+      "mixture_end": 9.56098669064621,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_74825.wav",
+      "origin_start": 4.503333333333333,
+      "origin_end": 7.061292517006803,
+      "mixture_start": 4.449999254581368,
+      "mixture_end": 7.007965648044779,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and helicopter and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and helicopter and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and birds chirping and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep cellphone buzz vibrating alert and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep cellphone buzz vibrating alert and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove cellphone buzz vibrating alert and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and birds chirping and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove helicopter and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/forest_3dist_296_rep1.json b/data/audio_mixtures_no_speech/train/forest_3dist_296_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..a659b8cd3fb221ab5a58d9ae1efa6fca64ab02d3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_296_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "forest_3dist_296_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "footsteps",
+    "jackhammer"
+  ],
+  "audio_file": "forest_3dist_296_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p281/p281_295.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.012471655328798,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_028.mp3",
+      "origin_start": 223.13591836734693,
+      "origin_end": 233.13591836734693,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/val/cellphone_buzz_vibrating_alert/fsd50k_134863.wav",
+      "origin_start": 2.69578231292517,
+      "origin_end": 5.572562358276644,
+      "mixture_start": 2.2058829934153463,
+      "mixture_end": 5.082670725358943,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_406674.wav",
+      "origin_start": 2.092721088435374,
+      "origin_end": 4.214285714285714,
+      "mixture_start": 4.89834230101085,
+      "mixture_end": 7.019921643883924,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386244.wav",
+      "origin_start": 0.5709750566893425,
+      "origin_end": 2.9645124716553286,
+      "mixture_start": 6.784939305748891,
+      "mixture_end": 9.178483557821938,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and footsteps and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and footsteps and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep cellphone buzz vibrating alert and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep cellphone buzz vibrating alert and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cellphone buzz vibrating alert and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove cellphone buzz vibrating alert and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and jackhammer and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_1dist_002_rep3.json b/data/audio_mixtures_no_speech/train/home_1dist_002_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..4dcbdca05ef88978d4be951f5e18ecfb2fa787e2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_1dist_002_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "home_1dist_002_rep3",
+  "scene_name": "Home",
+  "distractor_count": 1,
+  "distractors": [
+    "engine"
+  ],
+  "audio_file": "home_1dist_002_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p245/p245_081.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.465986394557823,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_011.mp3",
+      "origin_start": 34.52764172335601,
+      "origin_end": 44.52764172335601,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/esc-50_3-115382-A-44.wav",
+      "origin_start": 2.163514739229025,
+      "origin_end": 4.245283446712018,
+      "mixture_start": 2.6640214832466627,
+      "mixture_end": 4.745793119002345,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_1dist_005_rep4.json b/data/audio_mixtures_no_speech/train/home_1dist_005_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..e3dd53c0d0c221a9a5ee52173c8db616d6c4d977
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_1dist_005_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "home_1dist_005_rep4",
+  "scene_name": "Home",
+  "distractor_count": 1,
+  "distractors": [
+    "car_horn"
+  ],
+  "audio_file": "home_1dist_005_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_019.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.788730158730159,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Home/asmr_Home_GSxEQTqSFR8_chunk_008.mp3",
+      "origin_start": 160.142947845805,
+      "origin_end": 170.142947845805,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/esc-50_1-26177-A-43.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8459863945578232,
+      "mixture_start": 4.957934908997292,
+      "mixture_end": 6.803921303555116,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_1dist_037_rep2.json b/data/audio_mixtures_no_speech/train/home_1dist_037_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..1acd5254da1e9f62849ea18ba4b47d5b3e731730
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_1dist_037_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "home_1dist_037_rep2",
+  "scene_name": "Home",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "home_1dist_037_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_030.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.0772562358276643,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_012.mp3",
+      "origin_start": 246.49412698412698,
+      "origin_end": 256.494126984127,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_168588.wav",
+      "origin_start": 0.865827664399093,
+      "origin_end": 3.7802267573696144,
+      "mixture_start": 3.816552441985836,
+      "mixture_end": 6.730968301517971,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_1dist_068_rep1.json b/data/audio_mixtures_no_speech/train/home_1dist_068_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..a81afdc73d73259f1aac2d7c1250eda063f51d6f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_1dist_068_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "home_1dist_068_rep1",
+  "scene_name": "Home",
+  "distractor_count": 1,
+  "distractors": [
+    "hammer"
+  ],
+  "audio_file": "home_1dist_068_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_198.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.903083900226757,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_020.mp3",
+      "origin_start": 50.80285714285714,
+      "origin_end": 60.80285714285714,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_17908.wav",
+      "origin_start": 2.3552607709750566,
+      "origin_end": 4.44297052154195,
+      "mixture_start": 0.4392006150352532,
+      "mixture_end": 2.5269163079691994,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_1dist_074_rep2.json b/data/audio_mixtures_no_speech/train/home_1dist_074_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..1c3c3ed1cd3144ec40ee00e2f4216b3404ac254b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_1dist_074_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "home_1dist_074_rep2",
+  "scene_name": "Home",
+  "distractor_count": 1,
+  "distractors": [
+    "fireworks"
+  ],
+  "audio_file": "home_1dist_074_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_374.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.1625396825396828,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_000.mp3",
+      "origin_start": 77.72689342403628,
+      "origin_end": 87.72689342403628,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_376658.wav",
+      "origin_start": 2.3511337868480724,
+      "origin_end": 5.849183673469388,
+      "mixture_start": 2.3834656516714205,
+      "mixture_end": 5.881521068863587,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_1dist_093_rep3.json b/data/audio_mixtures_no_speech/train/home_1dist_093_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..7bfe918c93e7de1894ab241c271947e70a87e5f1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_1dist_093_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "home_1dist_093_rep3",
+  "scene_name": "Home",
+  "distractor_count": 1,
+  "distractors": [
+    "drill"
+  ],
+  "audio_file": "home_1dist_093_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_195.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.604172335600907,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_020.mp3",
+      "origin_start": 252.2210430839002,
+      "origin_end": 262.2210430839002,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_386289.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.75,
+      "mixture_start": 3.5835387345438896,
+      "mixture_end": 4.33353873454389,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_1dist_100_rep2.json b/data/audio_mixtures_no_speech/train/home_1dist_100_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..c109f015e4d0223bf0d5070bb189825d2200f94c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_1dist_100_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "home_1dist_100_rep2",
+  "scene_name": "Home",
+  "distractor_count": 1,
+  "distractors": [
+    "glass_breaking"
+  ],
+  "audio_file": "home_1dist_100_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p267/p267_197.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3942630385487527,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_003.mp3",
+      "origin_start": 100.89367346938775,
+      "origin_end": 110.89367346938775,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/esc-50_3-203375-A-39.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7314285714285714,
+      "mixture_start": 4.809643765339982,
+      "mixture_end": 5.541072336768553,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_1dist_100_rep4.json b/data/audio_mixtures_no_speech/train/home_1dist_100_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..9325fca9ef4105e1e8c43e8d7e713c3ec57beeb8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_1dist_100_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "home_1dist_100_rep4",
+  "scene_name": "Home",
+  "distractor_count": 1,
+  "distractors": [
+    "glass_breaking"
+  ],
+  "audio_file": "home_1dist_100_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_131.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.032766439909297,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_J1l8RMR-qXM_chunk_001.mp3",
+      "origin_start": 234.49798185941043,
+      "origin_end": 244.49798185941043,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/val/glass_breaking/esc-50_4-204123-A-39.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.905578231292517,
+      "mixture_start": 2.4996418416374473,
+      "mixture_end": 3.405220072929964,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_2dist_105_rep3.json b/data/audio_mixtures_no_speech/train/home_2dist_105_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..71bc3a85bef3e1db748b56d897eea9e947b3c6cd
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_105_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "home_2dist_105_rep3",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "door_knock"
+  ],
+  "audio_file": "home_2dist_105_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p278/p278_146.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.3710430839002266,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_008.mp3",
+      "origin_start": 143.65537414965988,
+      "origin_end": 153.65537414965988,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_388171.wav",
+      "origin_start": 6.848344671201814,
+      "origin_end": 10.31641723356009,
+      "mixture_start": 2.840569239532814,
+      "mixture_end": 6.30866326725819,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "door_knock",
+      "display_name": "door knock",
+      "original_path": "distractors/train/door_knock/fsd50k_85919.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8823582766439909,
+      "mixture_start": 4.071658693760897,
+      "mixture_end": 4.954016970404888,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "baby_cry",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove door knock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and door knock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep door knock and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove door knock and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_2dist_108_rep2.json b/data/audio_mixtures_no_speech/train/home_2dist_108_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..26da17163545b409086938554dc4154c71d101c6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_108_rep2.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "home_2dist_108_rep2",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "door_knock",
+    "fire_alarm"
+  ],
+  "audio_file": "home_2dist_108_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p241/p241_172.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.6291156462585032,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_019.mp3",
+      "origin_start": 59.89489795918367,
+      "origin_end": 69.89489795918368,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "door_knock",
+      "display_name": "door knock",
+      "original_path": "distractors/train/door_knock/fsd50k_180147.wav",
+      "origin_start": 4.300045351473923,
+      "origin_end": 6.908231292517007,
+      "mixture_start": 2.8904657781190304,
+      "mixture_end": 5.498653216979321,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 0.8747165532879818,
+      "origin_end": 3.0162131519274378,
+      "mixture_start": 6.776502418409499,
+      "mixture_end": 8.91801205889324,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "door_knock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove door knock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove door knock and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "door_knock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "door_knock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep door knock and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "door_knock",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_2dist_123_rep2.json b/data/audio_mixtures_no_speech/train/home_2dist_123_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..d6ffe338e4cf7a0004f7890b1965806eaf0f8491
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_123_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "home_2dist_123_rep2",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "car_horn"
+  ],
+  "audio_file": "home_2dist_123_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_279.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.7765532879818595,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_007.mp3",
+      "origin_start": 174.0598185941043,
+      "origin_end": 184.0598185941043,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_241899.wav",
+      "origin_start": 0.1809750566893424,
+      "origin_end": 4.173809523809524,
+      "mixture_start": 5.214100222818931,
+      "mixture_end": 9.206951033891327,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_364839.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0448979591836736,
+      "mixture_start": 1.3863199750323887,
+      "mixture_end": 2.431217934216062,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_2dist_132_rep4.json b/data/audio_mixtures_no_speech/train/home_2dist_132_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..c1b054d5442ed8b56241ae59ea29089c9892a300
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_132_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "home_2dist_132_rep4",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "siren"
+  ],
+  "audio_file": "home_2dist_132_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_328.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.4348299319727893,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_014.mp3",
+      "origin_start": 0.0,
+      "origin_end": 3.8640589569160997,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_75059.wav",
+      "origin_start": 7.454172335600907,
+      "origin_end": 9.492879818594105,
+      "mixture_start": 6.215117318153337,
+      "mixture_end": 8.253838022760242,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-43806-A-42.wav",
+      "origin_start": 0.020294784580498867,
+      "origin_end": 3.89750566893424,
+      "mixture_start": 2.2999168208401453,
+      "mixture_end": 6.177137318728613,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_2dist_159_rep1.json b/data/audio_mixtures_no_speech/train/home_2dist_159_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..7f8c33d836d0181edf4f5804cd18077ce02d98dd
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_159_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "home_2dist_159_rep1",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "engine"
+  ],
+  "audio_file": "home_2dist_159_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_450.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.204671201814059,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_012.mp3",
+      "origin_start": 118.31947845804989,
+      "origin_end": 128.3194784580499,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_428484.wav",
+      "origin_start": 0.8045351473922903,
+      "origin_end": 3.4179591836734695,
+      "mixture_start": 3.6594313603106734,
+      "mixture_end": 6.2728680918681965,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/fsd50k_113209.wav",
+      "origin_start": 3.589024943310658,
+      "origin_end": 6.6073242630385485,
+      "mixture_start": 6.41270438004857,
+      "mixture_end": 9.431006284757668,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_2dist_163_rep3.json b/data/audio_mixtures_no_speech/train/home_2dist_163_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..a88425987db91db206106f32543431982d8edc8a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_163_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "home_2dist_163_rep3",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "boom",
+    "cat"
+  ],
+  "audio_file": "home_2dist_163_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_037.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.484875283446712,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_007.mp3",
+      "origin_start": 33.67002267573696,
+      "origin_end": 43.67002267573696,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_161343.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7430385487528345,
+      "mixture_start": 5.382601864487596,
+      "mixture_end": 6.125640413240431,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/esc-50_2-110011-A-5.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.3815873015873017,
+      "mixture_start": 2.82972248927026,
+      "mixture_end": 4.211309790857562,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and keep cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_2dist_171_rep1.json b/data/audio_mixtures_no_speech/train/home_2dist_171_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..eab4543abefed50829f19c1e79c3c66b1a12e48f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_171_rep1.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "home_2dist_171_rep1",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "baby_cry"
+  ],
+  "audio_file": "home_2dist_171_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_213.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.011587301587301,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_004.mp3",
+      "origin_start": 140.60201814058956,
+      "origin_end": 150.60201814058956,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_14262.wav",
+      "origin_start": 0.5395238095238095,
+      "origin_end": 4.0042857142857144,
+      "mixture_start": 5.521874603576299,
+      "mixture_end": 8.986649937125728,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_179393.wav",
+      "origin_start": 0.12403628117913833,
+      "origin_end": 3.9366666666666665,
+      "mixture_start": 2.693291484003924,
+      "mixture_end": 6.505932864150962,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "alarm_clock",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_2dist_181_rep2.json b/data/audio_mixtures_no_speech/train/home_2dist_181_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..1d8d275a6e3feb625e1c1e7b72d5fedc565f43b3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_181_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "home_2dist_181_rep2",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "drill",
+    "hammer"
+  ],
+  "audio_file": "home_2dist_181_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p262/p262_260.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.370907029478458,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_009.mp3",
+      "origin_start": 72.61539682539683,
+      "origin_end": 82.61539682539683,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_386296.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6617687074829932,
+      "mixture_start": 1.0280703820557588,
+      "mixture_end": 1.689839089538752,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_407269.wav",
+      "origin_start": 6.984104308390022,
+      "origin_end": 10.41764172335601,
+      "mixture_start": 3.3537762752968643,
+      "mixture_end": 6.787317261123169,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_2dist_182_rep4.json b/data/audio_mixtures_no_speech/train/home_2dist_182_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..c8f4ea38355f72df51818004e92c1d781f1312ce
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_182_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "home_2dist_182_rep4",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "engine",
+    "dog"
+  ],
+  "audio_file": "home_2dist_182_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_312.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.9689795918367348,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_004.mp3",
+      "origin_start": 287.4452380952381,
+      "origin_end": 297.4452380952381,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/esc-50_3-141240-A-44.wav",
+      "origin_start": 0.1547845804988662,
+      "origin_end": 2.288480725623583,
+      "mixture_start": 3.1706573109500464,
+      "mixture_end": 5.304363103989972,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_236221.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.626938775510204,
+      "mixture_start": 8.099630184625605,
+      "mixture_end": 8.72656896013581,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_2dist_183_rep4.json b/data/audio_mixtures_no_speech/train/home_2dist_183_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..857a73dacd48bb2f37e6921e7841deab85d6db40
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_183_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "home_2dist_183_rep4",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "birds_chirping",
+    "slam"
+  ],
+  "audio_file": "home_2dist_183_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p267/p267_172.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.712698412698413,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_004.mp3",
+      "origin_start": 192.7643537414966,
+      "origin_end": 202.7643537414966,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_365668.wav",
+      "origin_start": 0.29210884353741495,
+      "origin_end": 4.2333106575963715,
+      "mixture_start": 0.718875626662845,
+      "mixture_end": 4.6600887657751,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/val/slam/fsd50k_89141.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9156462585034013,
+      "mixture_start": 5.6868957057965455,
+      "mixture_end": 7.602541964299947,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove birds chirping and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_2dist_188_rep3.json b/data/audio_mixtures_no_speech/train/home_2dist_188_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..0afc3e1f74842858923a63ea71a7146af558fc79
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_188_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "home_2dist_188_rep3",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "glass_breaking",
+    "gunshot"
+  ],
+  "audio_file": "home_2dist_188_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p234/p234_264.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.932312925170068,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_004.mp3",
+      "origin_start": 162.8708390022676,
+      "origin_end": 172.8708390022676,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/val/glass_breaking/esc-50_4-204777-B-39.wav",
+      "origin_start": 1.057687074829932,
+      "origin_end": 3.6545578231292515,
+      "mixture_start": 1.7108251071136586,
+      "mixture_end": 4.307697830383637,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_165795.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8892743764172336,
+      "mixture_start": 8.480650917761476,
+      "mixture_end": 9.36992529417871,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_2dist_194_rep4.json b/data/audio_mixtures_no_speech/train/home_2dist_194_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..3f6c9c6edbb14b956af824d2d06123dad8094564
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_194_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "home_2dist_194_rep4",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "engine",
+    "computer_typing"
+  ],
+  "audio_file": "home_2dist_194_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_458.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.121473922902494,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_005.mp3",
+      "origin_start": 89.54655328798187,
+      "origin_end": 99.54655328798187,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/esc-50_3-115382-A-44.wav",
+      "origin_start": 0.7163718820861678,
+      "origin_end": 3.186938775510204,
+      "mixture_start": 6.513209430598197,
+      "mixture_end": 8.983791754078194,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/fsd50k_155910.wav",
+      "origin_start": 3.6363038548752833,
+      "origin_end": 6.9189569160997735,
+      "mixture_start": 0.2852777675249114,
+      "mixture_end": 3.5679312050268277,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_2dist_196_rep4.json b/data/audio_mixtures_no_speech/train/home_2dist_196_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..d160021d7228b41d38436c5e7e373f2e6b725ea4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_196_rep4.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "home_2dist_196_rep4",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "alarm_clock"
+  ],
+  "audio_file": "home_2dist_196_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p234/p234_070.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6495691609977325,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_011.mp3",
+      "origin_start": 247.96698412698413,
+      "origin_end": 257.96698412698413,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/val/cellphone_buzz_vibrating_alert/fsd50k_369840.wav",
+      "origin_start": 0.05798185941043084,
+      "origin_end": 3.225646258503401,
+      "mixture_start": 6.2951522434634,
+      "mixture_end": 9.46282314772089,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_2-104475-A-37.wav",
+      "origin_start": 2.1169614512471657,
+      "origin_end": 4.237981859410431,
+      "mixture_start": 3.4638596421521353,
+      "mixture_end": 5.584901877657191,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_3dist_204_rep1.json b/data/audio_mixtures_no_speech/train/home_3dist_204_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..4afa91578f9973d36c5a1493cf40b8ea5d4bb16c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_204_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "home_3dist_204_rep1",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "cat",
+    "computer_typing",
+    "footsteps"
+  ],
+  "audio_file": "home_3dist_204_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_323.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.975668934240363,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_019.mp3",
+      "origin_start": 146.5319274376417,
+      "origin_end": 156.5319274376417,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/fsd50k_62210.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8475283446712019,
+      "mixture_start": 7.9094582079021185,
+      "mixture_end": 8.75698655257332,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/fsd50k_274931.wav",
+      "origin_start": 0.07138321995464852,
+      "origin_end": 2.0784126984126985,
+      "mixture_start": 5.702754582384845,
+      "mixture_end": 7.7098037791497465,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_271925.wav",
+      "origin_start": 9.04938775510204,
+      "origin_end": 12.01625850340136,
+      "mixture_start": 0.9247997771275126,
+      "mixture_end": 3.8916901617848554,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cat",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cat",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cat and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cat and computer typing and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "computer_typing",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "computer_typing",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "computer_typing",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and computer typing and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "computer_typing",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and footsteps and remove cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep cat and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and computer typing and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cat and computer typing and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove cat and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cat and remove computer typing and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_3dist_206_rep2.json b/data/audio_mixtures_no_speech/train/home_3dist_206_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..dcc3fcc890d1ecfd8e01d41cf99b1054312f78a4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_206_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "home_3dist_206_rep2",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "alarm_clock",
+    "cricket"
+  ],
+  "audio_file": "home_3dist_206_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p229/p229_081.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.1173015873015872,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_J1l8RMR-qXM_chunk_005.mp3",
+      "origin_start": 15.556666666666667,
+      "origin_end": 25.55666666666667,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_432380.wav",
+      "origin_start": 1.766530612244898,
+      "origin_end": 4.533968253968254,
+      "mixture_start": 0.016913460507051854,
+      "mixture_end": 2.784373288223412,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_1-96890-A-37.wav",
+      "origin_start": 0.5990702947845805,
+      "origin_end": 2.886734693877551,
+      "mixture_start": 5.569382836980947,
+      "mixture_end": 7.857059483546401,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_367324.wav",
+      "origin_start": 7.778866213151927,
+      "origin_end": 10.266757369614513,
+      "mixture_start": 2.3614147782999972,
+      "mixture_end": 4.849315714579673,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and cricket",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and alarm clock and cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "cricket"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "alarm_clock",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "cricket"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and alarm clock and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "alarm_clock",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "cricket"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and cricket and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "cricket"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and cricket and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep cough and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove cough and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and cricket and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove alarm clock and cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_3dist_207_rep3.json b/data/audio_mixtures_no_speech/train/home_3dist_207_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..65ec3b60fdbc116539b46e96d95074f55a074ed9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_207_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "home_3dist_207_rep3",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "ringtone",
+    "boom"
+  ],
+  "audio_file": "home_3dist_207_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_310.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.4943990929705215,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Home/asmr_Home_J1l8RMR-qXM_chunk_004.mp3",
+      "origin_start": 49.844897959183676,
+      "origin_end": 59.844897959183676,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_333386.wav",
+      "origin_start": 2.41968253968254,
+      "origin_end": 5.186780045351474,
+      "mixture_start": 4.08178783524404,
+      "mixture_end": 6.84889506997661,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_134067.wav",
+      "origin_start": 2.0826984126984125,
+      "origin_end": 4.253106575963719,
+      "mixture_start": 7.307411781252604,
+      "mixture_end": 9.47783869679943,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_435415.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.4280272108843537,
+      "mixture_start": 3.5326021995647117,
+      "mixture_end": 4.960629410449066,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and ringtone and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and boom and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep applause and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep applause and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove applause and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and boom and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove ringtone and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_3dist_240_rep2.json b/data/audio_mixtures_no_speech/train/home_3dist_240_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..6ee15a6b5738215233fa5dba64933dd4d1aaae41
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_240_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "home_3dist_240_rep2",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "engine",
+    "ringtone",
+    "slam"
+  ],
+  "audio_file": "home_3dist_240_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_376.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9239682539682539,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_J1l8RMR-qXM_chunk_005.mp3",
+      "origin_start": 23.558231292517007,
+      "origin_end": 33.55823129251701,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/val/engine/esc-50_4-186936-A-44.wav",
+      "origin_start": 1.4292063492063491,
+      "origin_end": 3.6285260770975056,
+      "mixture_start": 1.9038275961703843,
+      "mixture_end": 4.103161483816235,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_352663.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.172607709750567,
+      "mixture_start": 5.425574580110371,
+      "mixture_end": 6.598182289860938,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_413272.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.592108843537415,
+      "mixture_start": 5.0076688030229795,
+      "mixture_end": 5.599777646560394,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and ringtone and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and ringtone and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep ringtone and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep engine and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and ringtone and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and ringtone and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove engine and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and slam and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_3dist_241_rep4.json b/data/audio_mixtures_no_speech/train/home_3dist_241_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..f771943962c111158bc908cb1421d3ffaaee4993
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_241_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "home_3dist_241_rep4",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "jackhammer",
+    "slam"
+  ],
+  "audio_file": "home_3dist_241_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p268/p268_234.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.225532879818594,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_014.mp3",
+      "origin_start": 0.0,
+      "origin_end": 3.8640589569160997,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_432380.wav",
+      "origin_start": 0.4932879818594104,
+      "origin_end": 3.2802267573696144,
+      "mixture_start": 4.5795717175124135,
+      "mixture_end": 7.3665275410482,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386241.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.626938775510204,
+      "mixture_start": 5.7385971513059975,
+      "mixture_end": 6.365535926816202,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_73068.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.799546485260771,
+      "mixture_start": 7.857757955539345,
+      "mixture_end": 9.657304440800116,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and jackhammer and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and jackhammer and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep jackhammer and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and slam and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep cough and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove cough and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cough and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and slam and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_3dist_252_rep3.json b/data/audio_mixtures_no_speech/train/home_3dist_252_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..54b2a621828b000ddebdead32789c3c83998bf33
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_252_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "home_3dist_252_rep3",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "glass_breaking",
+    "slam"
+  ],
+  "audio_file": "home_3dist_252_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p261/p261_015.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.676485260770975,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_002.mp3",
+      "origin_start": 2.9298639455782314,
+      "origin_end": 12.929863945578232,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_1-29680-A-21.wav",
+      "origin_start": 0.00927437641723356,
+      "origin_end": 2.139047619047619,
+      "mixture_start": 3.466530513430736,
+      "mixture_end": 5.596305120394325,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_194685.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6153061224489796,
+      "mixture_start": 5.752408274985208,
+      "mixture_end": 6.367737073171149,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_390976.wav",
+      "origin_start": 0.043038548752834464,
+      "origin_end": 2.434421768707483,
+      "mixture_start": 4.832305011907439,
+      "mixture_end": 7.223691126806685,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and glass breaking and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and glass breaking and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove slam and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and slam and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep sneeze and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and glass breaking and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and glass breaking and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove sneeze and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove glass breaking and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_3dist_254_rep2.json b/data/audio_mixtures_no_speech/train/home_3dist_254_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..b1d3b310729d1b20cc872b95858d4701d1bcbbee
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_254_rep2.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "home_3dist_254_rep2",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "doorbell",
+    "siren",
+    "slam"
+  ],
+  "audio_file": "home_3dist_254_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_332.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3946485260770976,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_019.mp3",
+      "origin_start": 92.14038548752835,
+      "origin_end": 102.14038548752835,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "doorbell",
+      "display_name": "doorbell",
+      "original_path": "distractors/train/doorbell/fsd50k_196371.wav",
+      "origin_start": 0.012766439909297052,
+      "origin_end": 2.131768707482993,
+      "mixture_start": 5.656513256817675,
+      "mixture_end": 7.775516310002791,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_201611.wav",
+      "origin_start": 1.811859410430839,
+      "origin_end": 3.871156462585034,
+      "mixture_start": 0.36736108712000426,
+      "mixture_end": 2.4266630357112744,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/val/slam/fsd50k_324503.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5108390022675737,
+      "mixture_start": 0.9285356400429243,
+      "mixture_end": 1.439374642310498,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove doorbell and siren and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and siren and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam and remove doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell and keep siren and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and slam and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep doorbell and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove doorbell and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and slam and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and slam and keep doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_3dist_254_rep3.json b/data/audio_mixtures_no_speech/train/home_3dist_254_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..567396e604734c9782136a24cef4343bf4837268
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_254_rep3.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "home_3dist_254_rep3",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "doorbell",
+    "siren",
+    "slam"
+  ],
+  "audio_file": "home_3dist_254_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p285/p285_130.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.248004535147392,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_008.mp3",
+      "origin_start": 144.71278911564625,
+      "origin_end": 154.71278911564625,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "doorbell",
+      "display_name": "doorbell",
+      "original_path": "distractors/train/doorbell/fsd50k_69185.wav",
+      "origin_start": 0.15412698412698414,
+      "origin_end": 2.179591836734694,
+      "mixture_start": 5.13882762641054,
+      "mixture_end": 7.164293735255281,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_377126.wav",
+      "origin_start": 4.601814058956916,
+      "origin_end": 7.323356009070295,
+      "mixture_start": 0.27783913834394613,
+      "mixture_end": 2.9993848234669445,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_131020.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9520181405895691,
+      "mixture_start": 6.633047740211877,
+      "mixture_end": 7.585065880801446,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove doorbell and siren and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and siren and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam and remove doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell and keep siren and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and slam and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep doorbell and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove doorbell and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and slam and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and slam and keep doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_3dist_265_rep3.json b/data/audio_mixtures_no_speech/train/home_3dist_265_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..7e0a1c1a42ff5eff51d99d1d3878576378cad29e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_265_rep3.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "home_3dist_265_rep3",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "boom",
+    "dog",
+    "glass_breaking"
+  ],
+  "audio_file": "home_3dist_265_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p240/p240_016.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.361746031746032,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_014.mp3",
+      "origin_start": 0.0,
+      "origin_end": 3.8640589569160997,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_344686.wav",
+      "origin_start": 0.02873015873015873,
+      "origin_end": 2.1529251700680274,
+      "mixture_start": 6.216202653386014,
+      "mixture_end": 8.340401208076557,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_74513.wav",
+      "origin_start": 2.355034013605442,
+      "origin_end": 5.210884353741497,
+      "mixture_start": 3.755572552308965,
+      "mixture_end": 6.61142666590143,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_204685.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7198185941043084,
+      "mixture_start": 9.19001420337805,
+      "mixture_end": 9.909832797482359,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom",
+        "dog",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and dog and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "dog",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "dog",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "dog",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "dog",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "dog",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "dog",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and dog and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "dog",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and glass breaking and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep boom and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep boom and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and dog and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and glass breaking and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and glass breaking and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_3dist_266_rep2.json b/data/audio_mixtures_no_speech/train/home_3dist_266_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..64db121012018f134679fe0cc4c75360af7ddb0f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_266_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "home_3dist_266_rep2",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "glass_breaking",
+    "siren"
+  ],
+  "audio_file": "home_3dist_266_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_317.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8593650793650793,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_018.mp3",
+      "origin_start": 202.39068027210885,
+      "origin_end": 212.39068027210885,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_30036.wav",
+      "origin_start": 1.3817233560090703,
+      "origin_end": 4.509024943310657,
+      "mixture_start": 3.3727202895502546,
+      "mixture_end": 6.5000224337568735,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_244238.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.195827664399093,
+      "mixture_start": 0.7660711213775726,
+      "mixture_end": 1.9618987857766657,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_67359.wav",
+      "origin_start": 0.8924716553287982,
+      "origin_end": 4.209115646258503,
+      "mixture_start": 5.6993578506723885,
+      "mixture_end": 9.016018039403297,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and glass breaking and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and glass breaking and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep glass breaking and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and siren and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep applause and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and glass breaking and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove applause and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove glass breaking and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_3dist_276_rep4.json b/data/audio_mixtures_no_speech/train/home_3dist_276_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..80c55e226bd6afa9540144d67617ba1555be4d7f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_276_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "home_3dist_276_rep4",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "engine",
+    "sneeze",
+    "slam"
+  ],
+  "audio_file": "home_3dist_276_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_058.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.421269841269841,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_004.mp3",
+      "origin_start": 63.91448979591837,
+      "origin_end": 73.91448979591837,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/fsd50k_72828.wav",
+      "origin_start": 5.700997732426304,
+      "origin_end": 8.47455782312925,
+      "mixture_start": 5.918954038406667,
+      "mixture_end": 8.692528775944613,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_167642.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6385487528344671,
+      "mixture_start": 3.343454070357077,
+      "mixture_end": 3.982002823191544,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_211619.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.3699773242630386,
+      "mixture_start": 0.7068309604906485,
+      "mixture_end": 2.076808284753687,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and sneeze and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and sneeze and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and slam and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep engine and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep engine and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove engine and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and slam and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and slam and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_3dist_293_rep1.json b/data/audio_mixtures_no_speech/train/home_3dist_293_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..a1ff2efc085b493c9901166a16c602431ef37491
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_293_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "home_3dist_293_rep1",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "ringtone",
+    "sneeze",
+    "birds_chirping"
+  ],
+  "audio_file": "home_3dist_293_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_322.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.286349206349206,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_J1l8RMR-qXM_chunk_003.mp3",
+      "origin_start": 122.16539682539683,
+      "origin_end": 132.1653968253968,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167532.wav",
+      "origin_start": 2.053809523809524,
+      "origin_end": 5.336757369614513,
+      "mixture_start": 0.11991865542457102,
+      "mixture_end": 3.4028735207712266,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_341038.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9969160997732427,
+      "mixture_start": 2.6604753712642415,
+      "mixture_end": 4.657391471037484,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_353229.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5224489795918368,
+      "mixture_start": 6.509875823000494,
+      "mixture_end": 7.03232480259233,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and sneeze and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "sneeze",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and sneeze and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "sneeze",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep sneeze and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and birds chirping and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep ringtone and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove ringtone and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and birds chirping and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove sneeze and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/home_3dist_297_rep2.json b/data/audio_mixtures_no_speech/train/home_3dist_297_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..f1e7f15564469a8c3dd3da0a5d37b5e829cb3e62
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_297_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "home_3dist_297_rep2",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "sneeze",
+    "baby_cry"
+  ],
+  "audio_file": "home_3dist_297_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p244/p244_069.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.16,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_009.mp3",
+      "origin_start": 123.04997732426304,
+      "origin_end": 133.04997732426304,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_252242.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.4512471655328798,
+      "mixture_start": 5.27069611333373,
+      "mixture_end": 6.721943278866609,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_47273.wav",
+      "origin_start": 0.038253968253968255,
+      "origin_end": 2.320249433106576,
+      "mixture_start": 2.24689675477833,
+      "mixture_end": 4.528908367454504,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_26760_2.wav",
+      "origin_start": 7.800521541950113,
+      "origin_end": 10.284285714285714,
+      "mixture_start": 3.73852845316633,
+      "mixture_end": 6.222313554929825,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and sneeze and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "baby_cry"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "sneeze",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "baby_cry"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and sneeze and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "sneeze",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "baby_cry"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and baby cry and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "baby_cry"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and sneeze and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and sneeze and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and baby cry and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove sneeze and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_1dist_005_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_005_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..76ef0732f73dc61037855cf447b262cca64807de
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_005_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "kitchen_1dist_005_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "cricket"
+  ],
+  "audio_file": "kitchen_1dist_005_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p280/p280_066.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.183786848072562,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_MN5dmzXgGdQ_chunk_001.mp3",
+      "origin_start": 0.6773242630385488,
+      "origin_end": 10.677324263038548,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/val/cricket/fsd50k_182206.wav",
+      "origin_start": 5.051201814058957,
+      "origin_end": 8.017913832199547,
+      "mixture_start": 0.9827798705438691,
+      "mixture_end": 3.9495067445687395,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_1dist_008_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_008_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..48410bc35afe8bf36589972404addc4c026195c1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_008_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "kitchen_1dist_008_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "boom"
+  ],
+  "audio_file": "kitchen_1dist_008_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_295.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.3305442176870748,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_018.mp3",
+      "origin_start": 85.15963718820862,
+      "origin_end": 95.15963718820862,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_162265.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6834467120181407,
+      "mixture_start": 6.723120803940303,
+      "mixture_end": 8.406567515958445,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_1dist_018_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_018_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..90b1e48cb9950931f6b5673a8c970e0ee611c4d9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_018_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "kitchen_1dist_018_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "kitchen_1dist_018_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p240/p240_137.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.4777551020408164,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_110.mp3",
+      "origin_start": 257.82743764172335,
+      "origin_end": 267.82743764172335,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_3-51731-B-42.wav",
+      "origin_start": 1.3846485260770975,
+      "origin_end": 4.857074829931973,
+      "mixture_start": 4.0721121434989795,
+      "mixture_end": 7.544555415174389,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_1dist_018_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_018_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..3233c631c5bc1e849e950349d88b94cb77e43977
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_018_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "kitchen_1dist_018_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "kitchen_1dist_018_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_371.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.136530612244898,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_MN5dmzXgGdQ_chunk_001.mp3",
+      "origin_start": 74.9007029478458,
+      "origin_end": 84.9007029478458,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_1-76831-B-42.wav",
+      "origin_start": 2.1907256235827663,
+      "origin_end": 4.70297052154195,
+      "mixture_start": 3.567637229472739,
+      "mixture_end": 6.079894360383076,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_1dist_027_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_027_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..494fd3c27bfd870bde7c6e1a6c4b84f8dccc9b17
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_027_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "kitchen_1dist_027_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "kitchen_1dist_027_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_205.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.6320181405895693,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_005.mp3",
+      "origin_start": 120.8830612244898,
+      "origin_end": 130.8830612244898,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_371575.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7314285714285714,
+      "mixture_start": 9.116478368068792,
+      "mixture_end": 9.847906939497364,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_1dist_052_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_052_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..d872a51076dbba671772a40f7c8bb7dc1a182134
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_052_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "kitchen_1dist_052_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "cricket"
+  ],
+  "audio_file": "kitchen_1dist_052_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p266/p266_064.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.6713378684807254,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_MN5dmzXgGdQ_chunk_024.mp3",
+      "origin_start": 33.99480725623583,
+      "origin_end": 43.99480725623583,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_58337.wav",
+      "origin_start": 0.7946938775510204,
+      "origin_end": 4.660816326530612,
+      "mixture_start": 1.4513508241476978,
+      "mixture_end": 5.317476140855755,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_1dist_060_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_060_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..f34989e68421dad4be0315efedf58e0608e6c7f6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_060_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "kitchen_1dist_060_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "car_alarm"
+  ],
+  "audio_file": "kitchen_1dist_060_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_295.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.946485260770975,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_069.mp3",
+      "origin_start": 55.538163265306125,
+      "origin_end": 65.53816326530612,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_150981.wav",
+      "origin_start": 3.8147392290249433,
+      "origin_end": 5.85265306122449,
+      "mixture_start": 0.260871424616075,
+      "mixture_end": 2.2987915088065085,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_1dist_073_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_073_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..31f9e343b5815418af13d40f35bc31a451a573c7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_073_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "kitchen_1dist_073_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "computer_typing"
+  ],
+  "audio_file": "kitchen_1dist_073_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_274.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8621768707482995,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_MN5dmzXgGdQ_chunk_012.mp3",
+      "origin_start": 274.5292970521542,
+      "origin_end": 284.5292970521542,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/fsd50k_155910.wav",
+      "origin_start": 12.338004535147393,
+      "origin_end": 14.943786848072563,
+      "mixture_start": 6.323202515248888,
+      "mixture_end": 8.928996569902553,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_1dist_075_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_075_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..101aa1802656244000e2efb59f13afe249e5067a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_075_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "kitchen_1dist_075_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "car_alarm"
+  ],
+  "audio_file": "kitchen_1dist_075_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_255.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.413718820861678,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_MN5dmzXgGdQ_chunk_021.mp3",
+      "origin_start": 271.4336961451247,
+      "origin_end": 281.4336961451247,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_365903.wav",
+      "origin_start": 0.0707482993197279,
+      "origin_end": 2.624875283446712,
+      "mixture_start": 6.655806156354331,
+      "mixture_end": 9.209944049053036,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_1dist_078_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_078_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..de8d5d5dfa82857c9c49b5c1ddf4af146ccd6418
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_078_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "kitchen_1dist_078_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "kitchen_1dist_078_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p267/p267_050.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.607551020408163,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_MN5dmzXgGdQ_chunk_003.mp3",
+      "origin_start": 99.56034013605442,
+      "origin_end": 109.56034013605442,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_324579.wav",
+      "origin_start": 6.158571428571428,
+      "origin_end": 9.490861678004535,
+      "mixture_start": 4.501640025033292,
+      "mixture_end": 7.833950024761121,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_117_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_117_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..ca5d7452b59fab3526ac8298469b0a6ce10556fe
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_117_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "kitchen_2dist_117_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "baby_cry"
+  ],
+  "audio_file": "kitchen_2dist_117_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_199.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.44108843537415,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_077.mp3",
+      "origin_start": 273.00226757369614,
+      "origin_end": 283.00226757369614,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_428484.wav",
+      "origin_start": 1.4207936507936507,
+      "origin_end": 4.7405442176870745,
+      "mixture_start": 0.8384094945531018,
+      "mixture_end": 4.158181434254216,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_31985_4.wav",
+      "origin_start": 9.458095238095238,
+      "origin_end": 12.513265306122449,
+      "mixture_start": 5.221102479145206,
+      "mixture_end": 8.276278574827145,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_123_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_123_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..57e87076e31e8bc89329dab18fb12d84bd756946
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_123_rep2.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "kitchen_2dist_123_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "footsteps",
+    "siren"
+  ],
+  "audio_file": "kitchen_2dist_123_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_385.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3945124716553288,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_006.mp3",
+      "origin_start": 64.14600907029478,
+      "origin_end": 74.14600907029478,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_403167.wav",
+      "origin_start": 1.0398866213151927,
+      "origin_end": 4.8547165532879815,
+      "mixture_start": 3.287244315101029,
+      "mixture_end": 7.102087810642169,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_201611.wav",
+      "origin_start": 0.3256689342403628,
+      "origin_end": 3.8213605442176872,
+      "mixture_start": 6.292861454647382,
+      "mixture_end": 9.788555591938291,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_133_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_133_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..cf1064bcc47e291e25e523e16568fbfa936a7eac
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_133_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_133_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "engine",
+    "fire_alarm"
+  ],
+  "audio_file": "kitchen_2dist_133_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_418.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.048843537414966,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_066.mp3",
+      "origin_start": 278.12655328798184,
+      "origin_end": 288.12655328798184,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/fsd50k_44735.wav",
+      "origin_start": 1.6402721088435375,
+      "origin_end": 4.596961451247165,
+      "mixture_start": 5.183388601501056,
+      "mixture_end": 8.140085780905176,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 1.0276417233560091,
+      "origin_end": 3.5810204081632655,
+      "mixture_start": 2.327475009094128,
+      "mixture_end": 4.880855113236739,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_135_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_135_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..525d162b2ff87bb0e5d3f8a0dbb8f9d75189941a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_135_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "kitchen_2dist_135_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "dog"
+  ],
+  "audio_file": "kitchen_2dist_135_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p282/p282_055.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.4323809523809525,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_068.mp3",
+      "origin_start": 282.614693877551,
+      "origin_end": 292.614693877551,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_185619.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9520181405895691,
+      "mixture_start": 5.246965727153961,
+      "mixture_end": 6.1989838677435305,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_270586.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9736961451247166,
+      "mixture_start": 0.6193288623766195,
+      "mixture_end": 2.5930250075013364,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_137_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_137_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..c884c27889024297e3d1e4b74edd85502a47165e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_137_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_137_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "dog",
+    "slam"
+  ],
+  "audio_file": "kitchen_2dist_137_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_279.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8634013605442177,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_130.mp3",
+      "origin_start": 211.17283446712017,
+      "origin_end": 221.17283446712017,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_47926.wav",
+      "origin_start": 2.182448979591837,
+      "origin_end": 6.029478458049887,
+      "mixture_start": 3.415568481934646,
+      "mixture_end": 7.262610518311838,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_421487.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5804988662131519,
+      "mixture_start": 4.698521877039615,
+      "mixture_end": 5.279020743252767,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_142_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_142_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..fac64de0611849f700563fa50e17f5da653c4955
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_142_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_142_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "footsteps",
+    "jackhammer"
+  ],
+  "audio_file": "kitchen_2dist_142_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_465.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.5453968253968253,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_027.mp3",
+      "origin_start": 159.45303854875283,
+      "origin_end": 169.45303854875283,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_142008.wav",
+      "origin_start": 4.56859410430839,
+      "origin_end": 7.099047619047619,
+      "mixture_start": 5.084551953204723,
+      "mixture_end": 7.615020311107225,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386242.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8823582766439909,
+      "mixture_start": 5.494191175104019,
+      "mixture_end": 6.37654945174801,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_153_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_153_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..88cff752de3b713eaff49de22cb14abc510db0dd
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_153_rep2.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "kitchen_2dist_153_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "siren"
+  ],
+  "audio_file": "kitchen_2dist_153_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_237.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2886621315192746,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_098.mp3",
+      "origin_start": 176.80263038548753,
+      "origin_end": 186.80263038548753,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/val/cellphone_buzz_vibrating_alert/fsd50k_369840.wav",
+      "origin_start": 1.0919274376417234,
+      "origin_end": 3.7054875283446713,
+      "mixture_start": 1.6211953698097263,
+      "mixture_end": 4.23477066694872,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_128459.wav",
+      "origin_start": 20.77467120181406,
+      "origin_end": 23.4378231292517,
+      "mixture_start": 3.8898120780445025,
+      "mixture_end": 6.552984140728615,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_157_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_157_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..874c1a7484aebad90bdd10952bf5a5ac10d8864d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_157_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "kitchen_2dist_157_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "drill",
+    "fireworks"
+  ],
+  "audio_file": "kitchen_2dist_157_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_055.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.7957596371882085,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_012.mp3",
+      "origin_start": 288.6478231292517,
+      "origin_end": 298.6478231292517,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_50416.wav",
+      "origin_start": 3.123424036281179,
+      "origin_end": 6.625487528344671,
+      "mixture_start": 0.9721032757965296,
+      "mixture_end": 4.474170925917807,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_404436.wav",
+      "origin_start": 2.0571201814058955,
+      "origin_end": 4.278027210884353,
+      "mixture_start": 7.597943736969391,
+      "mixture_end": 9.818852083266018,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_161_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_161_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..3af19e8eaa9c99636393d886bb8b19ad824ed619
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_161_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "kitchen_2dist_161_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "dog",
+    "hammer"
+  ],
+  "audio_file": "kitchen_2dist_161_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p245/p245_124.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.546077097505669,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_043.mp3",
+      "origin_start": 105.55934240362812,
+      "origin_end": 115.55934240362812,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_266603.wav",
+      "origin_start": 4.18827664399093,
+      "origin_end": 7.922517006802721,
+      "mixture_start": 0.837305285001047,
+      "mixture_end": 4.571560721011597,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_250257.wav",
+      "origin_start": 1.481111111111111,
+      "origin_end": 5.314739229024943,
+      "mixture_start": 4.65265587499326,
+      "mixture_end": 8.486298816466821,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_168_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_168_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..2ba8ba96cbf81752a5692fee1805dcec573885c3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_168_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_168_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "alarm_clock"
+  ],
+  "audio_file": "kitchen_2dist_168_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_096.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.7577097505668933,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_013.mp3",
+      "origin_start": 19.18312925170068,
+      "origin_end": 29.18312925170068,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_3-144692-A-21.wav",
+      "origin_start": 0.06360544217687075,
+      "origin_end": 2.2628798185941044,
+      "mixture_start": 5.64038834394423,
+      "mixture_end": 7.839664082878132,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_2-104475-A-37.wav",
+      "origin_start": 0.6914058956916099,
+      "origin_end": 3.9949206349206348,
+      "mixture_start": 1.8330779325981092,
+      "mixture_end": 5.136613603559414,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_171_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_171_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..b301c489a821c35f1bb18b37dc9bbf1f42092dbc
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_171_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_171_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "kitchen_2dist_171_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p266/p266_415.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.09562358276644,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_095.mp3",
+      "origin_start": 193.14927437641722,
+      "origin_end": 203.14927437641722,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/val/applause/fsd50k_381355.wav",
+      "origin_start": 0.9463038548752835,
+      "origin_end": 3.659455782312925,
+      "mixture_start": 6.985846413511321,
+      "mixture_end": 9.699010137460286,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_256211.wav",
+      "origin_start": 0.5041496598639456,
+      "origin_end": 2.574603174603175,
+      "mixture_start": 3.706185188123593,
+      "mixture_end": 5.7766441458116375,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_177_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_177_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..32aff1e4fc5d6af507a606a66e32ec00c3988db2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_177_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_177_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "doorbell"
+  ],
+  "audio_file": "kitchen_2dist_177_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_422.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.7563945578231293,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_051.mp3",
+      "origin_start": 199.1824716553288,
+      "origin_end": 209.1824716553288,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_1-26143-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7430385487528345,
+      "mixture_start": 7.106233019815353,
+      "mixture_end": 7.849271568568188,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "doorbell",
+      "display_name": "doorbell",
+      "original_path": "distractors/train/doorbell/fsd50k_203943.wav",
+      "origin_start": 4.328979591836735,
+      "origin_end": 7.552766439909297,
+      "mixture_start": 6.663644325473379,
+      "mixture_end": 9.88743128293049,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and doorbell",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_182_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_182_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..354a6388f93248d5f5660fe4d2a5d5176c13a94f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_182_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_182_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "engine"
+  ],
+  "audio_file": "kitchen_2dist_182_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p285/p285_249.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8384807256235827,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_060.mp3",
+      "origin_start": 190.6684126984127,
+      "origin_end": 200.6684126984127,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/val/cellphone_buzz_vibrating_alert/fsd50k_215818.wav",
+      "origin_start": 3.0853514739229024,
+      "origin_end": 6.220521541950113,
+      "mixture_start": 2.066720033508265,
+      "mixture_end": 5.201905019843613,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/fsd50k_325809.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0,
+      "mixture_start": 0.06488034409419807,
+      "mixture_end": 2.064880344094198,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_184_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_184_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..73bf5ab42e2967066641de005bf5a5182b7319d3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_184_rep2.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "kitchen_2dist_184_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "gunshot"
+  ],
+  "audio_file": "kitchen_2dist_184_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_307.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.352018140589569,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_045.mp3",
+      "origin_start": 83.73621315192744,
+      "origin_end": 93.73621315192744,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_256159.wav",
+      "origin_start": 1.08859410430839,
+      "origin_end": 4.793333333333333,
+      "mixture_start": 4.230340721985164,
+      "mixture_end": 7.93508378385916,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_427592.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8707482993197279,
+      "mixture_start": 5.31744106168327,
+      "mixture_end": 6.188189361002998,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_192_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_192_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..9f2ea2e1f1a737f2103c135578d52588205cf178
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_192_rep2.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "kitchen_2dist_192_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "boom"
+  ],
+  "audio_file": "kitchen_2dist_192_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p260/p260_023.wav",
+      "origin_start": 0.0,
+      "origin_end": 10.45639455782313,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_104.mp3",
+      "origin_start": 260.83306122448977,
+      "origin_end": 270.83306122448977,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_215819.wav",
+      "origin_start": 9.249977324263039,
+      "origin_end": 11.793333333333333,
+      "mixture_start": 3.63499005455586,
+      "mixture_end": 6.178367253178232,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_435414.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.3583673469387756,
+      "mixture_start": 1.0871647063681065,
+      "mixture_end": 2.445532053306882,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_2dist_194_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_194_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..03e719f191f2c9e525f17e59770e68054756e135
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_194_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_194_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "fireworks",
+    "baby_cry"
+  ],
+  "audio_file": "kitchen_2dist_194_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p285/p285_195.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8190476190476192,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_085.mp3",
+      "origin_start": 166.7065986394558,
+      "origin_end": 176.7065986394558,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_318967.wav",
+      "origin_start": 8.7859410430839,
+      "origin_end": 11.470997732426303,
+      "mixture_start": 0.07098804025672757,
+      "mixture_end": 2.7560622048344072,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_271352.wav",
+      "origin_start": 0.185578231292517,
+      "origin_end": 3.360204081632653,
+      "mixture_start": 1.9497181007654332,
+      "mixture_end": 5.124360416164358,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_3dist_216_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_216_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..5a787c9975311ecbdf221b315e0a4a6232fda0db
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_216_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "kitchen_3dist_216_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "fire_alarm",
+    "gunshot",
+    "jackhammer"
+  ],
+  "audio_file": "kitchen_3dist_216_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_186.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.094829931972789,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_MN5dmzXgGdQ_chunk_012.mp3",
+      "origin_start": 103.85759637188208,
+      "origin_end": 113.85759637188208,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_124734.wav",
+      "origin_start": 2.8554648526077098,
+      "origin_end": 5.520952380952381,
+      "mixture_start": 2.508593456829921,
+      "mixture_end": 5.174092321207098,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_231245.wav",
+      "origin_start": 0.7606349206349207,
+      "origin_end": 3.9173696145124715,
+      "mixture_start": 6.557312509319876,
+      "mixture_end": 9.714052341368678,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386331.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5804988662131519,
+      "mixture_start": 4.706309369883434,
+      "mixture_end": 5.2868082360965865,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fire alarm and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and gunshot and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and gunshot and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep gunshot and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and jackhammer and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep fire alarm and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove fire alarm and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove fire alarm and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove gunshot and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_3dist_222_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_222_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..ea066bdde2eda10ce3f1af1f97ba16baa50bd0e0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_222_rep1.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "kitchen_3dist_222_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "car_horn",
+    "cat",
+    "fire_alarm"
+  ],
+  "audio_file": "kitchen_3dist_222_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p244/p244_410.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.5253061224489795,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_079.mp3",
+      "origin_start": 152.058231292517,
+      "origin_end": 162.058231292517,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_425496.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.242267573696145,
+      "mixture_start": 2.3575392224830813,
+      "mixture_end": 3.5998067961792266,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/esc-50_1-56380-A-5.wav",
+      "origin_start": 0.22927437641723356,
+      "origin_end": 2.2872335600907028,
+      "mixture_start": 5.917185287016393,
+      "mixture_end": 7.975159767049705,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_124734.wav",
+      "origin_start": 2.3626984126984127,
+      "origin_end": 4.649342403628118,
+      "mixture_start": 2.665951438648619,
+      "mixture_end": 4.9526003222645265,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_horn",
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and cat",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cat and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car horn and cat and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and cat and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cat and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep cat and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and fire alarm and remove cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep car horn and cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove car horn and cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and remove car horn and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove cat and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_3dist_235_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_235_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..d51996307034f683396135b531d1ddf7a70db3c4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_235_rep2.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "kitchen_3dist_235_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "doorbell",
+    "fire_alarm",
+    "gunshot"
+  ],
+  "audio_file": "kitchen_3dist_235_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p281/p281_363.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.1194331065759635,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_MN5dmzXgGdQ_chunk_003.mp3",
+      "origin_start": 190.20816326530613,
+      "origin_end": 200.20816326530613,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "doorbell",
+      "display_name": "doorbell",
+      "original_path": "distractors/train/doorbell/fsd50k_196370.wav",
+      "origin_start": 0.026077097505668934,
+      "origin_end": 2.1582086167800454,
+      "mixture_start": 1.7015593483918066,
+      "mixture_end": 3.8336932611597287,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 4.478775510204081,
+      "origin_end": 6.8459410430839,
+      "mixture_start": 7.512583984630108,
+      "mixture_end": 9.87975900142965,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_164646.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5224489795918368,
+      "mixture_start": 2.7635679303145664,
+      "mixture_end": 3.286016909906403,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "doorbell",
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove doorbell and fire alarm and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and fire alarm and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell and keep fire alarm and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and gunshot and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and fire alarm and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell and fire alarm and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and gunshot and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and gunshot and keep doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_3dist_238_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_238_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..773d554e4ecf424094e60cc42956d6b87d4ece02
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_238_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "kitchen_3dist_238_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "sneeze",
+    "boom"
+  ],
+  "audio_file": "kitchen_3dist_238_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_156.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.951269841269841,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_060.mp3",
+      "origin_start": 62.66086167800454,
+      "origin_end": 72.66086167800454,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_132043.wav",
+      "origin_start": 0.7265532879818594,
+      "origin_end": 3.6055555555555556,
+      "mixture_start": 2.740618361914257,
+      "mixture_end": 5.61963884991111,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_144009.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.068095238095238,
+      "mixture_start": 6.541661028141464,
+      "mixture_end": 7.609778941973663,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_349132.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.18421768707483,
+      "mixture_start": 8.136857915666225,
+      "mixture_end": 9.321075602741054,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and sneeze and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and sneeze and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and boom and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep fireworks and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep fireworks and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove fireworks and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove fireworks and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and boom and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_3dist_244_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_244_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..d05bbe3a30b3404d1d4dd77448cf6f935cc70713
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_244_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "kitchen_3dist_244_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "car_horn",
+    "computer_typing"
+  ],
+  "audio_file": "kitchen_3dist_244_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p266/p266_026.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.2273696145124715,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_028.mp3",
+      "origin_start": 39.56843537414966,
+      "origin_end": 49.56843537414966,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_43151.wav",
+      "origin_start": 0.1578684807256236,
+      "origin_end": 2.250204081632653,
+      "mixture_start": 7.266837329070416,
+      "mixture_end": 9.359173565567065,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/val/car_horn/esc-50_4-175856-A-43.wav",
+      "origin_start": 0.008095238095238095,
+      "origin_end": 3.8617460317460317,
+      "mixture_start": 3.912398272064411,
+      "mixture_end": 7.7660574632450405,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/val/computer_typing/fsd50k_331158.wav",
+      "origin_start": 1.4201133786848072,
+      "origin_end": 4.704761904761905,
+      "mixture_start": 1.3190870199969549,
+      "mixture_end": 4.603748677940448,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and car horn and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "computer_typing"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "car_horn",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "computer_typing"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and car horn and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "car_horn",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "computer_typing"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep car horn and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "computer_typing"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep cough and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and car horn and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove cough and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove cough and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and computer typing and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_3dist_248_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_248_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..df046be11a46942a048347225ba1915f50313491
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_248_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "kitchen_3dist_248_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "birds_chirping",
+    "siren"
+  ],
+  "audio_file": "kitchen_3dist_248_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p228/p228_268.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.731201814058957,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_082.mp3",
+      "origin_start": 247.1085941043084,
+      "origin_end": 257.1085941043084,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_77392.wav",
+      "origin_start": 21.304126984126984,
+      "origin_end": 25.11124716553288,
+      "mixture_start": 3.2515455178043844,
+      "mixture_end": 7.058686218674906,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_47610.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7830612244897959,
+      "mixture_start": 0.03095454147544875,
+      "mixture_end": 0.8140157659652446,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_93639.wav",
+      "origin_start": 10.41702947845805,
+      "origin_end": 13.372539682539683,
+      "mixture_start": 0.8055438877216572,
+      "mixture_end": 3.7610761365337035,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove birds chirping and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and birds chirping and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and birds chirping and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and siren and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and siren and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep cellphone buzz vibrating alert and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove cellphone buzz vibrating alert and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and siren and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove birds chirping and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_3dist_249_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_249_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..f2e979fb8d9d30420c663722a6602ca69bc0e997
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_249_rep2.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "kitchen_3dist_249_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "baby_cry",
+    "gunshot"
+  ],
+  "audio_file": "kitchen_3dist_249_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_237.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.4758049886621314,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_004.mp3",
+      "origin_start": 43.48678004535147,
+      "origin_end": 53.48678004535147,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_223183.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7546485260770975,
+      "mixture_start": 1.4683659412227597,
+      "mixture_end": 2.223014467299857,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/esc-50_1-60997-A-20.wav",
+      "origin_start": 1.1808616780045351,
+      "origin_end": 4.630204081632653,
+      "mixture_start": 5.560704040123018,
+      "mixture_end": 9.010066809081913,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_388054.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9752380952380952,
+      "mixture_start": 0.789028733486443,
+      "mixture_end": 1.7642668287245382,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and baby cry and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep baby cry and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep cellphone buzz vibrating alert and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and baby cry and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove cellphone buzz vibrating alert and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and gunshot and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove baby cry and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_3dist_250_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_250_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..56d196de9247140d1d581d53523bf5cef6f5fd8c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_250_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "kitchen_3dist_250_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "drill",
+    "glass_breaking"
+  ],
+  "audio_file": "kitchen_3dist_250_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_049.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.565283446712018,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_003.mp3",
+      "origin_start": 188.24843537414966,
+      "origin_end": 198.24843537414966,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/val/applause/fsd50k_60788.wav",
+      "origin_start": 0.19306122448979593,
+      "origin_end": 3.9723809523809526,
+      "mixture_start": 4.929034070047579,
+      "mixture_end": 8.708375555253182,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_66281.wav",
+      "origin_start": 0.033219954648526076,
+      "origin_end": 2.4946485260770976,
+      "mixture_start": 2.540497770111402,
+      "mixture_end": 5.001943504428697,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_213153.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8010884353741496,
+      "mixture_start": 7.119280983430244,
+      "mixture_end": 7.920369418804393,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and drill and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "drill",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and drill and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "drill",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep drill and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and glass breaking and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and glass breaking and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and drill and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and drill and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and glass breaking and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove drill and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_3dist_251_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_251_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..7a6e4deb023307619beff1bd97c6ade99e9eb05a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_251_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "kitchen_3dist_251_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "alarm_clock",
+    "birds_chirping",
+    "car_horn"
+  ],
+  "audio_file": "kitchen_3dist_251_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_393.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.845170068027211,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_047.mp3",
+      "origin_start": 47.00759637188209,
+      "origin_end": 57.00759637188209,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/val/alarm_clock/esc-50_4-198841-A-37.wav",
+      "origin_start": 0.5419501133786848,
+      "origin_end": 3.6460544217687074,
+      "mixture_start": 0.05526011615379178,
+      "mixture_end": 3.159367623443022,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/val/birds_chirping/esc-50_4-187769-A-14.wav",
+      "origin_start": 2.243628117913832,
+      "origin_end": 4.673696145124716,
+      "mixture_start": 4.142846678632928,
+      "mixture_end": 6.5729229815416685,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_66585.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8591383219954648,
+      "mixture_start": 5.203854217166471,
+      "mixture_end": 6.062992539161936,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "alarm_clock",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove birds chirping and car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and birds chirping and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "birds_chirping",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "birds_chirping",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "birds_chirping",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and birds chirping and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "birds_chirping",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep birds chirping and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and car horn and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and birds chirping and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove alarm clock and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and car horn and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and car horn and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_3dist_260_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_260_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..87321df3a3906e3aac38f403e31f0498d75dee4d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_260_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "kitchen_3dist_260_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "drill",
+    "ringtone",
+    "siren"
+  ],
+  "audio_file": "kitchen_3dist_260_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_009.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.721065759637188,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_033.mp3",
+      "origin_start": 91.37371882086168,
+      "origin_end": 101.37371882086168,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/val/drill/fsd50k_386292.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6385487528344671,
+      "mixture_start": 0.8016413257438306,
+      "mixture_end": 1.4401900785782977,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_178137.wav",
+      "origin_start": 11.110340136054422,
+      "origin_end": 13.650544217687075,
+      "mixture_start": 2.254665388438528,
+      "mixture_end": 4.794887658787225,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_1-76831-E-42.wav",
+      "origin_start": 2.3468934240362813,
+      "origin_end": 4.972176870748299,
+      "mixture_start": 6.434145712558653,
+      "mixture_end": 9.05943710538848,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and ringtone and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and ringtone and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and keep ringtone and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep drill and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and ringtone and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and ringtone and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove drill and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and remove ringtone and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_3dist_261_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_261_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..d1bfe6691b1d697ece9d00f93a2dd5eb59cafcde
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_261_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "kitchen_3dist_261_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "cricket",
+    "jackhammer"
+  ],
+  "audio_file": "kitchen_3dist_261_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p280/p280_271.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.3760090702947845,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_MN5dmzXgGdQ_chunk_007.mp3",
+      "origin_start": 53.960839002267576,
+      "origin_end": 63.960839002267576,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_1-26143-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7430385487528345,
+      "mixture_start": 4.182864229155142,
+      "mixture_end": 4.925902777907977,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/val/cricket/fsd50k_318961.wav",
+      "origin_start": 3.9836507936507934,
+      "origin_end": 7.8363038548752835,
+      "mixture_start": 4.087333915581078,
+      "mixture_end": 7.940006335349259,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386241.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.626938775510204,
+      "mixture_start": 1.5112656850985062,
+      "mixture_end": 2.1382044606087103,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and cricket and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and cricket and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "cricket",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep cricket and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep sneeze and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep sneeze and cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and cricket and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove sneeze and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cricket and jackhammer and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_3dist_270_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_270_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..22fdb162a3c2712deea7954cba65764f428bd7be
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_270_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "kitchen_3dist_270_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "doorbell",
+    "hammer",
+    "jackhammer"
+  ],
+  "audio_file": "kitchen_3dist_270_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_160.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.628684807256236,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_004.mp3",
+      "origin_start": 178.34242630385486,
+      "origin_end": 188.34242630385486,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "doorbell",
+      "display_name": "doorbell",
+      "original_path": "distractors/train/doorbell/fsd50k_399205.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.811156462585034,
+      "mixture_start": 5.636005780268128,
+      "mixture_end": 7.447162242853162,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_17907.wav",
+      "origin_start": 1.8299546485260771,
+      "origin_end": 4.9550340136054425,
+      "mixture_start": 1.9520732019185916,
+      "mixture_end": 5.077159961736717,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_400991.wav",
+      "origin_start": 5.415850340136054,
+      "origin_end": 8.374943310657596,
+      "mixture_start": 6.907051734069012,
+      "mixture_end": 9.866147377872387,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove doorbell",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove doorbell and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove doorbell and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove doorbell and hammer and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep doorbell and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "hammer",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and hammer and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "hammer",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell and keep hammer and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and jackhammer and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep doorbell and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell and hammer and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove doorbell and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and jackhammer and keep doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_3dist_291_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_291_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..43fc88b9769d70696b35cfe97b5e4b0b6ccee495
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_291_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "kitchen_3dist_291_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "ringtone",
+    "footsteps"
+  ],
+  "audio_file": "kitchen_3dist_291_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p258/p258_057.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3503401360544216,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_134.mp3",
+      "origin_start": 25.519115646258502,
+      "origin_end": 35.519115646258506,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_241900.wav",
+      "origin_start": 4.215419501133787,
+      "origin_end": 8.197120181405896,
+      "mixture_start": 2.807183638238704,
+      "mixture_end": 6.788903716369385,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_117568.wav",
+      "origin_start": 2.720362811791383,
+      "origin_end": 5.611043083900227,
+      "mixture_start": 0.21243231508519234,
+      "mixture_end": 3.1031335954949055,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_232824.wav",
+      "origin_start": 0.12077097505668934,
+      "origin_end": 3.531768707482993,
+      "mixture_start": 6.3078509315870095,
+      "mixture_end": 9.71885629002866,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and ringtone and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and footsteps and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and footsteps and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep applause and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove applause and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove applause and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and footsteps and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/kitchen_3dist_292_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_292_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..121aa53f712ef099ce16314d3b2968059cd80d13
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_292_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "kitchen_3dist_292_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "computer_typing",
+    "gunshot"
+  ],
+  "audio_file": "kitchen_3dist_292_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_278.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.9302267573696144,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_087.mp3",
+      "origin_start": 28.955986394557822,
+      "origin_end": 38.955986394557826,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_48797.wav",
+      "origin_start": 9.71015873015873,
+      "origin_end": 12.122448979591837,
+      "mixture_start": 2.7544470044948697,
+      "mixture_end": 5.166737376834247,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/fsd50k_174433.wav",
+      "origin_start": 0.8621995464852608,
+      "origin_end": 2.9703854875283446,
+      "mixture_start": 6.334421534239112,
+      "mixture_end": 8.442623168255015,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_350264.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5572789115646258,
+      "mixture_start": 8.363298624754986,
+      "mixture_end": 8.920577536319612,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and computer typing and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and computer typing and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep computer typing and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep baby cry and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep baby cry and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove baby cry and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove baby cry and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove computer typing and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_007_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_007_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..cff553cb0e5870939c50fd89f4f324c527c1b04f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_007_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "restaurant_1dist_007_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "car_alarm"
+  ],
+  "audio_file": "restaurant_1dist_007_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_093.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.144784580498866,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_052.mp3",
+      "origin_start": 269.8641496598639,
+      "origin_end": 279.8641496598639,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/val/car_alarm/fsd50k_422051.wav",
+      "origin_start": 9.800498866213152,
+      "origin_end": 13.589659863945577,
+      "mixture_start": 4.947175059731677,
+      "mixture_end": 8.73635157851216,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_013_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_013_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..73a798b5c6bbecf46db9033f61d9f51c3e05c96f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_013_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_013_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "footsteps"
+  ],
+  "audio_file": "restaurant_1dist_013_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p257/p257_343.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.03390022675737,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_022.mp3",
+      "origin_start": 11.902018140589568,
+      "origin_end": 21.90201814058957,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_429370.wav",
+      "origin_start": 1.5639909297052155,
+      "origin_end": 4.019637188208617,
+      "mixture_start": 1.4483297188619817,
+      "mixture_end": 3.903997048490741,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_015_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_015_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..3de3903733106b3c6c9e98c1d14fa2113aa36002
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_015_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "restaurant_1dist_015_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "restaurant_1dist_015_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p278/p278_288.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.140498866213152,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_003.mp3",
+      "origin_start": 110.16827664399094,
+      "origin_end": 120.16827664399094,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_77392.wav",
+      "origin_start": 1.523718820861678,
+      "origin_end": 3.9043990929705217,
+      "mixture_start": 2.6011694719458087,
+      "mixture_end": 4.981858018215144,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_034_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_034_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..63ce3b4eb491a7000f60558f256413aa29d07bbf
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_034_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_034_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "jackhammer"
+  ],
+  "audio_file": "restaurant_1dist_034_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_324.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6506802721088434,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_021.mp3",
+      "origin_start": 126.68804988662131,
+      "origin_end": 136.68804988662131,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/val/jackhammer/fsd50k_68080.wav",
+      "origin_start": 7.340022675736962,
+      "origin_end": 11.269863945578232,
+      "mixture_start": 2.9394127530667693,
+      "mixture_end": 6.86926771460805,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_046_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_046_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..4a22bdc347fb51befff90e136f33d9b2a21f5a2e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_046_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_046_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "alarm_clock"
+  ],
+  "audio_file": "restaurant_1dist_046_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_161.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.646031746031746,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_003.mp3",
+      "origin_start": 130.39639455782313,
+      "origin_end": 140.39639455782313,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/val/alarm_clock/esc-50_4-169508-A-37.wav",
+      "origin_start": 0.7431972789115646,
+      "origin_end": 2.7662585034013607,
+      "mixture_start": 1.7077070651576822,
+      "mixture_end": 3.7307892347202047,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_049_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_049_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..a47ec057269ad1d57c547ca444b064ced5e0f641
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_049_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_049_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "car_horn"
+  ],
+  "audio_file": "restaurant_1dist_049_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_117.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.0722675736961453,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_013.mp3",
+      "origin_start": 7.863219954648526,
+      "origin_end": 17.863219954648525,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/val/car_horn/esc-50_4-175856-A-43.wav",
+      "origin_start": 0.5113151927437641,
+      "origin_end": 3.9634920634920636,
+      "mixture_start": 0.5680240292668387,
+      "mixture_end": 4.020213541505362,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_056_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_056_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..09ef03907a0902e09b29707da534818ab13b41d5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_056_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_056_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "restaurant_1dist_056_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_338.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.1778684807256234,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_011.mp3",
+      "origin_start": 135.67462585034014,
+      "origin_end": 145.67462585034014,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/val/baby_cry/disco_noises_151080_2.wav",
+      "origin_start": 17.399138321995466,
+      "origin_end": 19.91766439909297,
+      "mixture_start": 1.3856370431429366,
+      "mixture_end": 3.9041643465209592,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_067_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_067_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..0f963dfdc238127ef0f38b8077d936997a99eb4a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_067_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_067_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "drill"
+  ],
+  "audio_file": "restaurant_1dist_067_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_379.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.2619274376417233,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_056.mp3",
+      "origin_start": 100.69036281179139,
+      "origin_end": 110.69036281179139,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_333080.wav",
+      "origin_start": 6.247301587301587,
+      "origin_end": 9.636167800453515,
+      "mixture_start": 1.6700975503909392,
+      "mixture_end": 5.058985780903258,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_080_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_080_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..aab3cf95f8de70767ae8b56409dca49362d7a031
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_080_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "restaurant_1dist_080_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "car_alarm"
+  ],
+  "audio_file": "restaurant_1dist_080_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_352.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.1153061224489798,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_019.mp3",
+      "origin_start": 37.219251700680275,
+      "origin_end": 47.219251700680275,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_217989.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9366213151927437,
+      "mixture_start": 2.682564545635213,
+      "mixture_end": 3.619185860827957,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_082_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_082_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..a704cd424cfd1cd0c136af489d97acc964a2a945
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_082_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_082_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "jackhammer"
+  ],
+  "audio_file": "restaurant_1dist_082_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p282/p282_360.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.243333333333333,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_002.mp3",
+      "origin_start": 14.123537414965986,
+      "origin_end": 24.123537414965988,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386240.wav",
+      "origin_start": 2.091950113378685,
+      "origin_end": 6.000521541950113,
+      "mixture_start": 1.364165765764659,
+      "mixture_end": 5.2727403018911065,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_086_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_086_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..26d49be05d1cdb9cea5b7191c9a66a72bf2a206d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_086_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_086_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "hammer"
+  ],
+  "audio_file": "restaurant_1dist_086_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p228/p228_142.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.13907029478458,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_024.mp3",
+      "origin_start": 205.94272108843538,
+      "origin_end": 215.94272108843538,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_184580.wav",
+      "origin_start": 0.8308390022675737,
+      "origin_end": 4.100521541950114,
+      "mixture_start": 1.5357527489933367,
+      "mixture_end": 4.805453293458191,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_087_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_087_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..2566579e3e1d604b56edee7c4133cb970516e69d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_087_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "restaurant_1dist_087_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "glass_breaking"
+  ],
+  "audio_file": "restaurant_1dist_087_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p271/p271_313.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.696349206349207,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_016.mp3",
+      "origin_start": 246.0138775510204,
+      "origin_end": 256.0138775510204,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_160759.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.18421768707483,
+      "mixture_start": 4.442154029481002,
+      "mixture_end": 5.626371716555832,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_088_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_088_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..bcbd67b3e343007887eff1e1e6dc6a871465079b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_088_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_088_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "fireworks"
+  ],
+  "audio_file": "restaurant_1dist_088_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p267/p267_125.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.265827664399093,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_079.mp3",
+      "origin_start": 289.56065759637187,
+      "origin_end": 299.56065759637187,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/esc-50_3-119120-D-48.wav",
+      "origin_start": 0.07997732426303855,
+      "origin_end": 3.873718820861678,
+      "mixture_start": 5.531820357748828,
+      "mixture_end": 9.325569714605452,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_089_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_089_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..ece12f08810c5502a4c7da658972fe2a1cbaff0f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_089_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_089_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "drill"
+  ],
+  "audio_file": "restaurant_1dist_089_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_015.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.957142857142857,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_039.mp3",
+      "origin_start": 95.15251700680273,
+      "origin_end": 105.15251700680273,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_387700.wav",
+      "origin_start": 0.3535374149659864,
+      "origin_end": 2.4391609977324262,
+      "mixture_start": 0.08023171229082571,
+      "mixture_end": 2.1658616340173222,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_090_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_090_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..edef2acacee1ed6ab56e1b5ef1f1f2b19c2ecaac
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_090_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_090_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "slam"
+  ],
+  "audio_file": "restaurant_1dist_090_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_068.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.593310657596372,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_045.mp3",
+      "origin_start": 144.0690022675737,
+      "origin_end": 154.0690022675737,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_151132.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7314285714285714,
+      "mixture_start": 5.329580065174425,
+      "mixture_end": 6.061008636602996,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_1dist_096_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_096_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..769f838b413e7c2e97f65976915e32440fe7abb1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_096_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_096_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "restaurant_1dist_096_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_313.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8199319727891154,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_024.mp3",
+      "origin_start": 222.77503401360545,
+      "origin_end": 232.77503401360545,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/val/baby_cry/esc-50_4-167077-A-20.wav",
+      "origin_start": 0.5898412698412698,
+      "origin_end": 3.131700680272109,
+      "mixture_start": 2.830398157649083,
+      "mixture_end": 5.372272156878514,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_104_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_104_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..2353f1076031395e8e0306b7b29716693c36bc86
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_104_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "restaurant_2dist_104_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "ringtone",
+    "boom"
+  ],
+  "audio_file": "restaurant_2dist_104_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_327.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9046031746031744,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_012.mp3",
+      "origin_start": 25.2643537414966,
+      "origin_end": 35.2643537414966,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_201946.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.5325170068027212,
+      "mixture_start": 4.150562348447482,
+      "mixture_end": 5.683079355250204,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_127845.wav",
+      "origin_start": 0.025034013605442176,
+      "origin_end": 2.1197732426303855,
+      "mixture_start": 5.007418346366785,
+      "mixture_end": 7.1021798556908164,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_109_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_109_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..a6922d9fd75f84496e1ea1c6c9056a0ef9765dcc
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_109_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "restaurant_2dist_109_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "hammer"
+  ],
+  "audio_file": "restaurant_2dist_109_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_132.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2898639455782313,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_014.mp3",
+      "origin_start": 172.56943310657596,
+      "origin_end": 182.56943310657596,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_324415.wav",
+      "origin_start": 0.0736281179138322,
+      "origin_end": 3.748639455782313,
+      "mixture_start": 2.6194992540311492,
+      "mixture_end": 6.29451511972443,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_218773.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8343764172335602,
+      "mixture_start": 7.472432369300807,
+      "mixture_end": 9.306808786534367,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_117_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_117_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..e978d7d25497a0cf3b67a5b86fd97a0b7f6a277e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_117_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "restaurant_2dist_117_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "boom"
+  ],
+  "audio_file": "restaurant_2dist_117_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_232.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8453514739229027,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_078.mp3",
+      "origin_start": 98.29160997732426,
+      "origin_end": 108.29160997732426,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_41385.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7778684807256235,
+      "mixture_start": 3.7427350413307767,
+      "mixture_end": 4.5206035220564,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_93845.wav",
+      "origin_start": 2.0662585034013605,
+      "origin_end": 4.341065759637188,
+      "mixture_start": 7.024119995001913,
+      "mixture_end": 9.298946963837066,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_119_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_119_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..1b7813301ab8b91e0d9bbeb5738de43e918baf7c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_119_rep4.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "restaurant_2dist_119_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "ringtone"
+  ],
+  "audio_file": "restaurant_2dist_119_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p264/p264_191.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.253015873015873,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_008.mp3",
+      "origin_start": 261.13503401360543,
+      "origin_end": 271.13503401360543,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_215819.wav",
+      "origin_start": 1.491859410430839,
+      "origin_end": 4.129319727891157,
+      "mixture_start": 3.5678728259676764,
+      "mixture_end": 6.205340337233636,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/val/ringtone/fsd50k_163558.wav",
+      "origin_start": 0.27537414965986395,
+      "origin_end": 3.963310657596372,
+      "mixture_start": 5.217092149818685,
+      "mixture_end": 8.90504631331509,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_123_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_123_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..32f0992211a6159f5dac2a2368b530ea4132d44c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_123_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "restaurant_2dist_123_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "drill",
+    "fireworks"
+  ],
+  "audio_file": "restaurant_2dist_123_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_284.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.655102040816327,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_014.mp3",
+      "origin_start": 71.67496598639455,
+      "origin_end": 81.67496598639455,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_386178.wav",
+      "origin_start": 1.444172335600907,
+      "origin_end": 3.621927437641723,
+      "mixture_start": 0.9836008252968644,
+      "mixture_end": 3.161375718301783,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_198334.wav",
+      "origin_start": 10.373038548752834,
+      "origin_end": 13.912766439909298,
+      "mixture_start": 6.1397303977697035,
+      "mixture_end": 9.679469187024303,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_127_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_127_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..2024297519fa436b99675a830f0ad04effde79e8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_127_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "restaurant_2dist_127_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "jackhammer",
+    "siren"
+  ],
+  "audio_file": "restaurant_2dist_127_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_373.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.6724036281179138,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_034.mp3",
+      "origin_start": 36.28399092970522,
+      "origin_end": 46.28399092970522,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_273697.wav",
+      "origin_start": 4.8113378684807255,
+      "origin_end": 8.420861678004535,
+      "mixture_start": 3.180019686228275,
+      "mixture_end": 6.789557599878785,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_1-76831-C-42.wav",
+      "origin_start": 1.301700680272109,
+      "origin_end": 4.140952380952381,
+      "mixture_start": 5.823086120043615,
+      "mixture_end": 8.662342909620438,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_134_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_134_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..7a14673b4924d840ff301eff1ab74dcc569b384a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_134_rep4.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "restaurant_2dist_134_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "boom",
+    "glass_breaking"
+  ],
+  "audio_file": "restaurant_2dist_134_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_393.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.015192743764172,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_015.mp3",
+      "origin_start": 24.324467120181406,
+      "origin_end": 34.3244671201814,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_89597.wav",
+      "origin_start": 0.20410430839002267,
+      "origin_end": 2.5903174603174604,
+      "mixture_start": 6.546742506770295,
+      "mixture_end": 8.932958967811867,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_213156.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9752380952380952,
+      "mixture_start": 6.842548473675886,
+      "mixture_end": 7.817786568913981,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_155_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_155_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..8ffdbc8f8c7f51fe86b685a16b82187053b5d009
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_155_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "restaurant_2dist_155_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "footsteps"
+  ],
+  "audio_file": "restaurant_2dist_155_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p261/p261_069.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.5653514739229024,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_026.mp3",
+      "origin_start": 69.04659863945578,
+      "origin_end": 79.04659863945578,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_1-54505-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.626938775510204,
+      "mixture_start": 7.528597352650905,
+      "mixture_end": 8.15553612816111,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_353799.wav",
+      "origin_start": 2.153832199546485,
+      "origin_end": 5.226870748299319,
+      "mixture_start": 2.1921565238022462,
+      "mixture_end": 5.265214124392049,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_157_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_157_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..a1caf97e2ebfa4a24ae389809f9f4008687382e9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_157_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "restaurant_2dist_157_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "gunshot",
+    "jackhammer"
+  ],
+  "audio_file": "restaurant_2dist_157_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_352.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8425850340136054,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_052.mp3",
+      "origin_start": 203.76253968253968,
+      "origin_end": 213.76253968253968,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_233318.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0100680272108844,
+      "mixture_start": 8.611043538356517,
+      "mixture_end": 9.621111565567402,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386331.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5804988662131519,
+      "mixture_start": 2.314582574610104,
+      "mixture_end": 2.895081440823256,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_160_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_160_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..c1ec9d43face3bcd7ef64e6ecbde2d96c82101ca
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_160_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "restaurant_2dist_160_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "fireworks",
+    "sneeze"
+  ],
+  "audio_file": "restaurant_2dist_160_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p267/p267_267.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.6280952380952383,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_004.mp3",
+      "origin_start": 238.49063492063493,
+      "origin_end": 248.49063492063493,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_349818.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5340362811791384,
+      "mixture_start": 0.8599494727959834,
+      "mixture_end": 1.3940084297120832,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_185619.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9520181405895691,
+      "mixture_start": 5.701180452197937,
+      "mixture_end": 6.653198592787506,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_167_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_167_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..ae757120cb3f5741fc8253aeae237032d33b389e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_167_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "restaurant_2dist_167_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "siren"
+  ],
+  "audio_file": "restaurant_2dist_167_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p229/p229_040.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.612199546485261,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_056.mp3",
+      "origin_start": 31.328231292517007,
+      "origin_end": 41.32823129251701,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_324415.wav",
+      "origin_start": 0.4412244897959184,
+      "origin_end": 3.0022448979591836,
+      "mixture_start": 7.26445792841064,
+      "mixture_end": 9.825487763357838,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_3-51376-A-42.wav",
+      "origin_start": 1.4333786848072563,
+      "origin_end": 4.148662131519274,
+      "mixture_start": 2.1898601621740927,
+      "mixture_end": 4.90516373737313,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_170_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_170_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..6ae0915a9cce1aabe52107934fed5d261014e1b9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_170_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "restaurant_2dist_170_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "alarm_clock"
+  ],
+  "audio_file": "restaurant_2dist_170_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_091.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.3282766439909297,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_006.mp3",
+      "origin_start": 148.22378684807256,
+      "origin_end": 158.22378684807256,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_150981.wav",
+      "origin_start": 6.500793650793651,
+      "origin_end": 9.266190476190475,
+      "mixture_start": 6.22339447631724,
+      "mixture_end": 8.98880524377402,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_204684.wav",
+      "origin_start": 11.275374149659864,
+      "origin_end": 14.930725623582767,
+      "mixture_start": 0.33854132040629237,
+      "mixture_end": 3.9939087913501816,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_173_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_173_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..a2634d04913a33107f660e2662b0bbbec3137087
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_173_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "restaurant_2dist_173_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "sneeze"
+  ],
+  "audio_file": "restaurant_2dist_173_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_400.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.629818594104308,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_078.mp3",
+      "origin_start": 193.37371882086168,
+      "origin_end": 203.37371882086168,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_365903.wav",
+      "origin_start": 0.17662131519274377,
+      "origin_end": 2.5024716553287982,
+      "mixture_start": 6.998861507012457,
+      "mixture_end": 9.324724053038304,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/val/sneeze/fsd50k_184435.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5224489795918368,
+      "mixture_start": 7.237293259738358,
+      "mixture_end": 7.759742239330195,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_184_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_184_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..bf6931e209cb0ff30545808a2b2a1033e027fc4c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_184_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "restaurant_2dist_184_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "fire_alarm"
+  ],
+  "audio_file": "restaurant_2dist_184_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_042.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0936507936507938,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_005.mp3",
+      "origin_start": 214.83755102040817,
+      "origin_end": 224.83755102040817,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_326252.wav",
+      "origin_start": 9.19532879818594,
+      "origin_end": 12.794557823129251,
+      "mixture_start": 2.694750066197477,
+      "mixture_end": 6.293994874861013,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_124734.wav",
+      "origin_start": 2.0251473922902496,
+      "origin_end": 4.888004535147393,
+      "mixture_start": 0.03185702309798275,
+      "mixture_end": 2.894730810482073,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_2dist_188_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_188_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..f5c85745483ac83c638753ca5f51e7a50b080e17
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_188_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "restaurant_2dist_188_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "sneeze"
+  ],
+  "audio_file": "restaurant_2dist_188_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p280/p280_020.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.3146031746031746,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_026.mp3",
+      "origin_start": 191.49662131519275,
+      "origin_end": 201.49662131519275,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_432380.wav",
+      "origin_start": 0.15326530612244899,
+      "origin_end": 3.0585714285714287,
+      "mixture_start": 1.9330051700288324,
+      "mixture_end": 4.838313904612459,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_352177.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5108390022675737,
+      "mixture_start": 8.65685587866427,
+      "mixture_end": 9.167694880931844,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_3dist_209_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_209_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..18f57f0484dd6ae3a3b36ca716cd56b538432c41
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_209_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "restaurant_3dist_209_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "ringtone",
+    "gunshot"
+  ],
+  "audio_file": "restaurant_3dist_209_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_138.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.6700680272108843,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_030.mp3",
+      "origin_start": 241.94183673469388,
+      "origin_end": 251.94183673469388,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_45578.wav",
+      "origin_start": 0.9012244897959184,
+      "origin_end": 3.450589569160998,
+      "mixture_start": 3.856412094190087,
+      "mixture_end": 6.405787987891289,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_117564.wav",
+      "origin_start": 1.1108390022675736,
+      "origin_end": 4.401859410430839,
+      "mixture_start": 5.551968253263528,
+      "mixture_end": 8.842997789850717,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_362487.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6153061224489796,
+      "mixture_start": 3.926710163343483,
+      "mixture_end": 4.542038961529424,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and ringtone and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep ringtone and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep cough and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep cough and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove cough and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove cough and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and gunshot and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_3dist_209_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_209_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..52de63a4c2933aad788bc17fef367ba163a8dad6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_209_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "restaurant_3dist_209_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "ringtone",
+    "gunshot"
+  ],
+  "audio_file": "restaurant_3dist_209_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_427.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.220204081632653,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_003.mp3",
+      "origin_start": 229.5777097505669,
+      "origin_end": 239.5777097505669,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_331061.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1377777777777778,
+      "mixture_start": 3.1469809294902267,
+      "mixture_end": 4.284758707268004,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_404758.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.2887074829931973,
+      "mixture_start": 8.296688956503113,
+      "mixture_end": 9.58539643949631,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_162403.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5224489795918368,
+      "mixture_start": 9.176506905935009,
+      "mixture_end": 9.698955885526846,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and ringtone and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep ringtone and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep cough and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep cough and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove cough and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove cough and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and gunshot and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_3dist_236_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_236_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..201290a80cb8c1b522b3a14d28a3cc314dccad31
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_236_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "restaurant_3dist_236_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "drill",
+    "baby_cry",
+    "gunshot"
+  ],
+  "audio_file": "restaurant_3dist_236_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_162.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.225895691609978,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_068.mp3",
+      "origin_start": 1.68437641723356,
+      "origin_end": 11.68437641723356,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_50416.wav",
+      "origin_start": 4.366643990929705,
+      "origin_end": 8.016893424036281,
+      "mixture_start": 5.639427368304972,
+      "mixture_end": 9.289682438379373,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_198411_12.wav",
+      "origin_start": 5.076689342403628,
+      "origin_end": 7.3152380952380955,
+      "mixture_start": 2.5933793998655794,
+      "mixture_end": 4.8319507130727155,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/val/gunshot/fsd50k_161968.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8808163265306121,
+      "mixture_start": 4.18706318717545,
+      "mixture_end": 6.067879513706062,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and baby cry and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep drill and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep drill and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove drill and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and gunshot and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and remove baby cry and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_3dist_242_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_242_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..1577340d621b432c940bf026e6fd45c20eb04240
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_242_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "restaurant_3dist_242_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "alarm_clock",
+    "slam"
+  ],
+  "audio_file": "restaurant_3dist_242_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p268/p268_171.wav",
+      "origin_start": 0.0,
+      "origin_end": 7.085102040816326,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_013.mp3",
+      "origin_start": 50.309274376417235,
+      "origin_end": 60.309274376417235,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/val/car_alarm/fsd50k_422051.wav",
+      "origin_start": 5.814467120181406,
+      "origin_end": 9.227596371882086,
+      "mixture_start": 4.340980764235767,
+      "mixture_end": 7.754113027376586,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_22627.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5224489795918368,
+      "mixture_start": 9.004655369372266,
+      "mixture_end": 9.527104348964102,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_89739.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.2346031746031747,
+      "mixture_start": 1.7301635944761777,
+      "mixture_end": 2.964766769079352,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and alarm clock and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and alarm clock and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep slam and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep alarm clock and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and slam and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and alarm clock and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and alarm clock and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and slam and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove alarm clock and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_3dist_246_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_246_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..74dd2141eaa18a390ed01ba1b92d82f33eb377a1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_246_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "restaurant_3dist_246_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "cough",
+    "ringtone"
+  ],
+  "audio_file": "restaurant_3dist_246_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_331.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.14265306122449,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_002.mp3",
+      "origin_start": 116.16607709750566,
+      "origin_end": 126.16607709750566,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_428484.wav",
+      "origin_start": 1.2385487528344672,
+      "origin_end": 3.5763038548752832,
+      "mixture_start": 0.9554386832503876,
+      "mixture_end": 3.29321449440189,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_325777.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6021768707482993,
+      "mixture_start": 4.3762905181416025,
+      "mixture_end": 5.978467388889902,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_24929.wav",
+      "origin_start": 14.33283446712018,
+      "origin_end": 17.194421768707482,
+      "mixture_start": 6.160899270889042,
+      "mixture_end": 9.02250025423193,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and cough and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and cough and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep car alarm and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep car alarm and cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove car alarm and cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and ringtone and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove cough and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_3dist_257_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_257_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..a47e3659948e05a827ddd27729db5d29b13b528d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_257_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "restaurant_3dist_257_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "helicopter",
+    "boom"
+  ],
+  "audio_file": "restaurant_3dist_257_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_248.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.738775510204082,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_035.mp3",
+      "origin_start": 252.2296371882086,
+      "origin_end": 262.22963718820864,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/val/car_alarm/fsd50k_422051.wav",
+      "origin_start": 15.048072562358277,
+      "origin_end": 17.892154195011337,
+      "mixture_start": 3.1095095354578257,
+      "mixture_end": 5.9536130333044195,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_3-150979-A-40.wav",
+      "origin_start": 0.10526077097505669,
+      "origin_end": 3.803174603174603,
+      "mixture_start": 5.314800443395245,
+      "mixture_end": 9.01273602835044,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_369529.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9868480725623583,
+      "mixture_start": 6.729764284265408,
+      "mixture_end": 7.716612356827766,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and helicopter and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "helicopter",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "helicopter",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "helicopter",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and helicopter and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "helicopter",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and boom and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and boom and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and helicopter and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and helicopter and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove car alarm and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and boom and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_3dist_258_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_258_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..14a277b3e6aced84d714c5ea7e96fd8ec666ea4e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_258_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "restaurant_3dist_258_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "baby_cry",
+    "siren"
+  ],
+  "audio_file": "restaurant_3dist_258_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_110.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.777278911564626,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_030.mp3",
+      "origin_start": 265.1468934240363,
+      "origin_end": 275.1468934240363,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_65514.wav",
+      "origin_start": 0.054217687074829934,
+      "origin_end": 2.5890476190476193,
+      "mixture_start": 2.890730977339168,
+      "mixture_end": 5.425575394737305,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_187207_1.wav",
+      "origin_start": 5.410204081632653,
+      "origin_end": 9.007097505668934,
+      "mixture_start": 5.652195538450662,
+      "mixture_end": 9.249107715378745,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_336894.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.7197278911564626,
+      "mixture_start": 0.4834347159562356,
+      "mixture_end": 2.203162607112698,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and baby cry and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and baby cry and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and siren and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and siren and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and baby cry and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and baby cry and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cellphone buzz vibrating alert and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and siren and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_3dist_260_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_260_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..6a85bcd14d89af86772f9efdef6b44211238a111
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_260_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "restaurant_3dist_260_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "boom",
+    "car_horn"
+  ],
+  "audio_file": "restaurant_3dist_260_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_387.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6643310657596373,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_004.mp3",
+      "origin_start": 221.54049886621314,
+      "origin_end": 231.54049886621314,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_217989.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9366213151927437,
+      "mixture_start": 7.9956126489041335,
+      "mixture_end": 8.932233964096877,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/val/boom/fsd50k_322490.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.603718820861678,
+      "mixture_start": 5.860835366021021,
+      "mixture_end": 6.464554186882699,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_364839.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0448979591836736,
+      "mixture_start": 5.805020775532483,
+      "mixture_end": 6.849918734716157,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm and car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and boom and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and boom and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep boom and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep car alarm and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and boom and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove car alarm and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove car alarm and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove boom and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_3dist_264_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_264_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..04d615f1084b51e6a0a7ef9e810bfa20ce7d910c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_264_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "restaurant_3dist_264_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "alarm_clock",
+    "slam"
+  ],
+  "audio_file": "restaurant_3dist_264_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_413.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.015056689342404,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_005.mp3",
+      "origin_start": 99.02297052154195,
+      "origin_end": 109.02297052154195,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/val/applause/fsd50k_241902.wav",
+      "origin_start": 7.070249433106576,
+      "origin_end": 10.893356009070295,
+      "mixture_start": 0.0008942926718433706,
+      "mixture_end": 3.8240188611045323,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/val/alarm_clock/esc-50_4-209536-A-37.wav",
+      "origin_start": 0.186734693877551,
+      "origin_end": 2.642766439909297,
+      "mixture_start": 5.47677544682308,
+      "mixture_end": 7.9328144106926155,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_413272.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.592108843537415,
+      "mixture_start": 4.0017121718572986,
+      "mixture_end": 4.593821015394713,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and alarm clock and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and alarm clock and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and slam and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep applause and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep applause and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and alarm clock and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove applause and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and slam and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_3dist_265_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_265_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..5570f37f05b32198201776fd26e0618e25248366
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_265_rep2.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "restaurant_3dist_265_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "boom",
+    "siren"
+  ],
+  "audio_file": "restaurant_3dist_265_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_357.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.738185941043084,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_074.mp3",
+      "origin_start": 213.65566893424037,
+      "origin_end": 223.65566893424037,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_150981.wav",
+      "origin_start": 4.075850340136054,
+      "origin_end": 6.562176870748299,
+      "mixture_start": 3.4152898317709925,
+      "mixture_end": 5.901635143248878,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/val/boom/fsd50k_120956.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.555736961451247,
+      "mixture_start": 0.2114531101317728,
+      "mixture_end": 1.7671900715830198,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_1-76831-C-42.wav",
+      "origin_start": 2.1755102040816325,
+      "origin_end": 4.610045351473923,
+      "mixture_start": 1.488500152052888,
+      "mixture_end": 3.923052027540133,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and boom and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and boom and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep boom and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep car alarm and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep car alarm and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove car alarm and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and siren and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove boom and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_3dist_269_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_269_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..073a4d48955b2c3067f70b754635ab9bfd15585a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_269_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "restaurant_3dist_269_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "helicopter",
+    "fire_alarm",
+    "slam"
+  ],
+  "audio_file": "restaurant_3dist_269_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_362.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8441043083900226,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_003.mp3",
+      "origin_start": 181.19467120181406,
+      "origin_end": 191.19467120181406,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_1-181071-B-40.wav",
+      "origin_start": 0.5323582766439909,
+      "origin_end": 4.179523809523809,
+      "mixture_start": 2.497461035399459,
+      "mixture_end": 6.144647206858877,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/val/fire_alarm/fsd50k_270643.wav",
+      "origin_start": 3.873151927437642,
+      "origin_end": 6.958548752834467,
+      "mixture_start": 6.458678204222081,
+      "mixture_end": 9.544084519701817,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_274935.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.592108843537415,
+      "mixture_start": 9.328831280552029,
+      "mixture_end": 9.920940124089444,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and fire alarm and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "fire_alarm",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and fire alarm and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "fire_alarm",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and slam and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep helicopter and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep helicopter and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove helicopter and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and slam and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove fire alarm and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_3dist_278_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_278_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..6f8621a167322c404dcae8ae2586257185521aef
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_278_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "restaurant_3dist_278_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "car_horn",
+    "fire_alarm"
+  ],
+  "audio_file": "restaurant_3dist_278_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p268/p268_013.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.376575963718821,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_014.mp3",
+      "origin_start": 104.08297052154195,
+      "origin_end": 114.08297052154195,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/val/sneeze/esc-50_4-167642-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6385487528344671,
+      "mixture_start": 0.9056501853816679,
+      "mixture_end": 1.544198938216135,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/val/car_horn/fsd50k_178402.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.811156462585034,
+      "mixture_start": 6.433405817197186,
+      "mixture_end": 8.24456227978222,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 8.599637188208616,
+      "origin_end": 11.671451247165534,
+      "mixture_start": 3.1983474167824752,
+      "mixture_end": 6.27018300158684,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car horn and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and car horn and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and car horn and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep car horn and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep sneeze and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and car horn and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and car horn and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove sneeze and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove car horn and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_3dist_280_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_280_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..06c474d4e7a044043d1b80d688127262a8e41925
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_280_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "restaurant_3dist_280_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "ringtone",
+    "sneeze"
+  ],
+  "audio_file": "restaurant_3dist_280_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_009.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.335374149659864,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_012.mp3",
+      "origin_start": 271.53006802721086,
+      "origin_end": 281.53006802721086,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_428484.wav",
+      "origin_start": 1.61281179138322,
+      "origin_end": 5.498503401360544,
+      "mixture_start": 1.5996194586817132,
+      "mixture_end": 5.485315891694732,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_56164.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6834467120181407,
+      "mixture_start": 7.705423245461461,
+      "mixture_end": 9.388869957479601,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_167640.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.7182766439909296,
+      "mixture_start": 6.020286618535695,
+      "mixture_end": 7.7385632625266245,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and ringtone and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and ringtone and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep ringtone and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "sneeze"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and sneeze and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and ringtone and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove car alarm and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and sneeze and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove ringtone and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/restaurant_3dist_291_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_291_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..f2666e52f38a5ffd02b8b296b942843d0ad1d3a8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_291_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "restaurant_3dist_291_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "baby_cry",
+    "slam"
+  ],
+  "audio_file": "restaurant_3dist_291_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_422.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3488208616780044,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_006.mp3",
+      "origin_start": 246.53183673469388,
+      "origin_end": 256.53183673469385,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_434404.wav",
+      "origin_start": 7.805170068027211,
+      "origin_end": 10.071156462585034,
+      "mixture_start": 5.444110241505766,
+      "mixture_end": 7.710099763583601,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/esc-50_1-60997-B-20.wav",
+      "origin_start": 0.63140589569161,
+      "origin_end": 4.268843537414966,
+      "mixture_start": 1.6139787546660744,
+      "mixture_end": 5.251423960784125,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_219480.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6501587301587302,
+      "mixture_start": 0.8558598057673329,
+      "mixture_end": 1.5060185359260632,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and baby cry and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and baby cry and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and slam and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and slam and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and baby cry and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and baby cry and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and slam and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and slam and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_001_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_001_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..febd4f9a45586f352d197c0b9c9cc8d7f727cc85
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_001_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_001_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "alarm_clock"
+  ],
+  "audio_file": "supermarket_1dist_001_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_021.wav",
+      "origin_start": 0.0,
+      "origin_end": 9.305396825396825,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_Dp9yBndP-1A_chunk_007.mp3",
+      "origin_start": 197.86492063492062,
+      "origin_end": 207.86492063492062,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_22627.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5224489795918368,
+      "mixture_start": 9.373004788389167,
+      "mixture_end": 9.895453767981003,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_017_rep4.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_017_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..e2b14f08bd93a1b460f77f72484e4345f40c2f8d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_017_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_017_rep4",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "hammer"
+  ],
+  "audio_file": "supermarket_1dist_017_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_066.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.7570521541950113,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_023.mp3",
+      "origin_start": 259.33038548752836,
+      "origin_end": 269.33038548752836,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_388063.wav",
+      "origin_start": 14.311088435374149,
+      "origin_end": 16.68124716553288,
+      "mixture_start": 2.920200168279984,
+      "mixture_end": 5.290370299070894,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_033_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_033_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..8a2516bafc4934c9bc0271580d4909d8b9381bb8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_033_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "supermarket_1dist_033_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "supermarket_1dist_033_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_167.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.9302947845804987,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_009.mp3",
+      "origin_start": 57.84165532879818,
+      "origin_end": 67.84165532879818,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_1-76831-C-42.wav",
+      "origin_start": 0.7994557823129251,
+      "origin_end": 3.908004535147392,
+      "mixture_start": 6.645486313203028,
+      "mixture_end": 9.754055477626885,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_036_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_036_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..7570e00ecc5bb8c686538b87d64df5383e34096f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_036_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "supermarket_1dist_036_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "fire_alarm"
+  ],
+  "audio_file": "supermarket_1dist_036_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_368.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.332018140589569,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_6HPYhhWjv-8_chunk_018.mp3",
+      "origin_start": 209.07383219954647,
+      "origin_end": 219.07383219954647,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_124734.wav",
+      "origin_start": 0.5692063492063492,
+      "origin_end": 2.6023356009070295,
+      "mixture_start": 2.696901395015856,
+      "mixture_end": 4.730038060653111,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_047_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_047_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..22dac9a0ecb746a8b1960054a2e6ca6e0445337c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_047_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_047_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "supermarket_1dist_047_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p234/p234_183.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2031746031746033,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_081.mp3",
+      "origin_start": 135.06052154195012,
+      "origin_end": 145.06052154195012,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_391181.wav",
+      "origin_start": 12.79700680272109,
+      "origin_end": 15.566145124716554,
+      "mixture_start": 4.7283630511572845,
+      "mixture_end": 7.497513817560382,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_049_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_049_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..29b09601741631ccfc804599d48f12187d1a943b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_049_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_049_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "cough"
+  ],
+  "audio_file": "supermarket_1dist_049_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p229/p229_236.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.012562358276644,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_Dp9yBndP-1A_chunk_015.mp3",
+      "origin_start": 43.09580498866213,
+      "origin_end": 53.09580498866213,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_19112.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1145578231292517,
+      "mixture_start": 2.8833980535772175,
+      "mixture_end": 3.9979558767064693,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_059_rep1.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_059_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..37b9dd9f001818b6ebea7b947f4c9515f138c3ad
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_059_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_059_rep1",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "drill"
+  ],
+  "audio_file": "supermarket_1dist_059_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p268/p268_175.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.502018140589569,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_6HPYhhWjv-8_chunk_017.mp3",
+      "origin_start": 64.38160997732426,
+      "origin_end": 74.38160997732426,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/val/drill/fsd50k_377525.wav",
+      "origin_start": 9.49766439909297,
+      "origin_end": 11.734784580498866,
+      "mixture_start": 6.233554271373724,
+      "mixture_end": 8.470692899483518,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_064_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_064_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..0ccfbed6c7f11627d754d8562ef29dd8be1efb84
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_064_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_064_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "jackhammer"
+  ],
+  "audio_file": "supermarket_1dist_064_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_270.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.5436961451247164,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_015.mp3",
+      "origin_start": 132.4807029478458,
+      "origin_end": 142.4807029478458,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/val/jackhammer/fsd50k_68080.wav",
+      "origin_start": 6.8566666666666665,
+      "origin_end": 10.757687074829931,
+      "mixture_start": 2.4503813831718015,
+      "mixture_end": 6.351408452439798,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_065_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_065_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..3943cb04fb05f1e377ee22dadb11e282c374cbc5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_065_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "supermarket_1dist_065_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "supermarket_1dist_065_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_183.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.09562358276644,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_102.mp3",
+      "origin_start": 36.998117913832196,
+      "origin_end": 46.998117913832196,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/val/cellphone_buzz_vibrating_alert/fsd50k_175039.wav",
+      "origin_start": 4.132267573696145,
+      "origin_end": 7.5422902494331066,
+      "mixture_start": 3.6868034605116344,
+      "mixture_end": 7.096826267797683,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_069_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_069_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..8396928579b9671dfee1d3bfadae81975a49d5f9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_069_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "supermarket_1dist_069_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "supermarket_1dist_069_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p240/p240_159.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.391111111111111,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_112.mp3",
+      "origin_start": 41.4253514739229,
+      "origin_end": 51.4253514739229,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_112211.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0332879818594105,
+      "mixture_start": 6.554218427763997,
+      "mixture_end": 7.5875064096234075,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_069_rep4.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_069_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..a4d961eec06d13f6ef9b7042ea3138d0427cf70b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_069_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "supermarket_1dist_069_rep4",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "supermarket_1dist_069_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_084.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.2218820861678004,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_004.mp3",
+      "origin_start": 87.52337868480726,
+      "origin_end": 97.52337868480726,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_122277.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0,
+      "mixture_start": 6.675809896391259,
+      "mixture_end": 7.675809896391259,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_070_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_070_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..f89c06dbd3ce8c47bc2c9e55ebac16bd24cdfc98
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_070_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_070_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "jackhammer"
+  ],
+  "audio_file": "supermarket_1dist_070_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_163.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.33297052154195,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_013.mp3",
+      "origin_start": 226.28344671201813,
+      "origin_end": 236.28344671201813,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386303.wav",
+      "origin_start": 4.369931972789115,
+      "origin_end": 7.425170068027211,
+      "mixture_start": 5.08896412962478,
+      "mixture_end": 8.144221453404136,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_073_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_073_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..415aca8a6cf4c5710a06fe32b1fed149c1be276c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_073_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_073_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "jackhammer"
+  ],
+  "audio_file": "supermarket_1dist_073_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_379.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6914512471655327,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_112.mp3",
+      "origin_start": 168.67,
+      "origin_end": 178.67,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_273697.wav",
+      "origin_start": 5.256281179138322,
+      "origin_end": 9.159433106575964,
+      "mixture_start": 3.642744923561091,
+      "mixture_end": 7.545898732170595,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_094_rep4.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_094_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..a794e76ddab2191451e3a50d69a26521954b5c8b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_094_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_094_rep4",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "cough"
+  ],
+  "audio_file": "supermarket_1dist_094_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_361.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.740340136054422,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_052.mp3",
+      "origin_start": 204.35789115646259,
+      "origin_end": 214.35789115646259,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_365476.wav",
+      "origin_start": 0.2883673469387755,
+      "origin_end": 2.592063492063492,
+      "mixture_start": 3.543297734120691,
+      "mixture_end": 5.846994576003741,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_097_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_097_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..f2318253cc567aaf0a7f5ddac1a7f52619c53bd5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_097_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_097_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "supermarket_1dist_097_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_127.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.697664399092971,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_011.mp3",
+      "origin_start": 204.97226757369614,
+      "origin_end": 214.97226757369614,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_80481.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9404081632653061,
+      "mixture_start": 8.195873319824733,
+      "mixture_end": 9.13628148309004,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_1dist_100_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_100_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..37a99c78c8915bf80bd00eb6936845b71815ed4c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_100_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_100_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "alarm_clock"
+  ],
+  "audio_file": "supermarket_1dist_100_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p228/p228_175.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.55077097505669,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_099.mp3",
+      "origin_start": 233.94285714285715,
+      "origin_end": 243.94285714285715,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_2-104476-A-37.wav",
+      "origin_start": 0.818798185941043,
+      "origin_end": 4.495238095238095,
+      "mixture_start": 3.3709034210215783,
+      "mixture_end": 7.047361553094676,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_2dist_104_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_104_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..be7482c45f3b3dc723e6db7dd9fac4482f28799d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_104_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "supermarket_2dist_104_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "footsteps"
+  ],
+  "audio_file": "supermarket_2dist_104_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_045.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8631065759637186,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_013.mp3",
+      "origin_start": 129.309410430839,
+      "origin_end": 139.309410430839,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_84423.wav",
+      "origin_start": 0.883015873015873,
+      "origin_end": 3.1008843537414967,
+      "mixture_start": 5.828356695099434,
+      "mixture_end": 8.04622738436867,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_337294.wav",
+      "origin_start": 4.178344671201814,
+      "origin_end": 7.218095238095238,
+      "mixture_start": 0.6187447919497534,
+      "mixture_end": 3.658503733200704,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_2dist_126_rep1.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_126_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..591b13dd73b999510109a407cd72fd8793729701
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_126_rep1.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "supermarket_2dist_126_rep1",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "hammer"
+  ],
+  "audio_file": "supermarket_2dist_126_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_376.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8632426303854874,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_002.mp3",
+      "origin_start": 219.8552380952381,
+      "origin_end": 229.8552380952381,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_13802.wav",
+      "origin_start": 1.3259183673469388,
+      "origin_end": 3.358548752834467,
+      "mixture_start": 4.072189438902276,
+      "mixture_end": 6.104837681518015,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_106481.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.4396371882086167,
+      "mixture_start": 0.1554014954619709,
+      "mixture_end": 1.5950386836705877,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_2dist_137_rep1.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_137_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..089f6bf78aa4ccf412ac68b744eeb8afaa836a63
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_137_rep1.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "supermarket_2dist_137_rep1",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "ringtone",
+    "fire_alarm"
+  ],
+  "audio_file": "supermarket_2dist_137_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_369.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.031201814058957,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_095.mp3",
+      "origin_start": 258.51396825396824,
+      "origin_end": 268.51396825396824,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/val/ringtone/fsd50k_234565.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.068095238095238,
+      "mixture_start": 5.771148764831868,
+      "mixture_end": 6.8392666786640675,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 9.554920634920634,
+      "origin_end": 11.957052154195011,
+      "mixture_start": 3.0395096103213533,
+      "mixture_end": 5.441663708797216,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_2dist_137_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_137_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..4471deab128a11c28775d762d739076bc566e38a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_137_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "supermarket_2dist_137_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "ringtone",
+    "fire_alarm"
+  ],
+  "audio_file": "supermarket_2dist_137_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p245/p245_150.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.634240362811791,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_6HPYhhWjv-8_chunk_018.mp3",
+      "origin_start": 30.90798185941043,
+      "origin_end": 40.907981859410434,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_24929.wav",
+      "origin_start": 6.096371882086168,
+      "origin_end": 8.95702947845805,
+      "mixture_start": 6.221240527647471,
+      "mixture_end": 9.081906308007808,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/val/fire_alarm/fsd50k_270643.wav",
+      "origin_start": 4.186031746031746,
+      "origin_end": 7.826916099773243,
+      "mixture_start": 2.4459802219840094,
+      "mixture_end": 6.08686925511369,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_2dist_149_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_149_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..8ad2b9c382bb973b9d17e88a55c08265d579e8cf
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_149_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "supermarket_2dist_149_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "ringtone",
+    "alarm_clock"
+  ],
+  "audio_file": "supermarket_2dist_149_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_136.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0956462585034012,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_087.mp3",
+      "origin_start": 282.93297052154196,
+      "origin_end": 292.93297052154196,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167547.wav",
+      "origin_start": 2.8602721088435374,
+      "origin_end": 6.486281179138322,
+      "mixture_start": 1.2830566620073407,
+      "mixture_end": 4.90907754738031,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_204684.wav",
+      "origin_start": 2.452517006802721,
+      "origin_end": 6.451496598639456,
+      "mixture_start": 3.976580565440283,
+      "mixture_end": 7.975567488760694,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_2dist_153_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_153_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..133f2b5b589ffc3c0074ad5f47ccb78b110febcc
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_153_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "supermarket_2dist_153_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "jackhammer",
+    "siren"
+  ],
+  "audio_file": "supermarket_2dist_153_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_181.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.4178231292517007,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_116.mp3",
+      "origin_start": 240.14879818594105,
+      "origin_end": 250.14879818594105,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386237.wav",
+      "origin_start": 2.0451020408163267,
+      "origin_end": 4.78437641723356,
+      "mixture_start": 1.9378415591882083,
+      "mixture_end": 4.67711602457536,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-70052-A-42.wav",
+      "origin_start": 0.5256689342403628,
+      "origin_end": 4.499365079365079,
+      "mixture_start": 5.322838629888125,
+      "mixture_end": 9.296540953344422,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_2dist_155_rep4.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_155_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..9aaf64c16dcf76ee9b723b89013bbb88ad640038
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_155_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "supermarket_2dist_155_rep4",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "glass_breaking"
+  ],
+  "audio_file": "supermarket_2dist_155_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_009.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.56968253968254,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_Dp9yBndP-1A_chunk_004.mp3",
+      "origin_start": 257.41886621315194,
+      "origin_end": 267.41886621315194,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_3-156558-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.2887074829931973,
+      "mixture_start": 8.453103052788704,
+      "mixture_end": 9.741810535781902,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_347496.wav",
+      "origin_start": 0.4976643990929705,
+      "origin_end": 2.900249433106576,
+      "mixture_start": 2.313483188918636,
+      "mixture_end": 4.716085850304476,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_2dist_170_rep4.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_170_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..de238180c099b8515f7c8a8512e11c242b875bdb
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_170_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "supermarket_2dist_170_rep4",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "fire_alarm"
+  ],
+  "audio_file": "supermarket_2dist_170_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_220.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.286734693877551,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_066.mp3",
+      "origin_start": 210.76226757369614,
+      "origin_end": 220.76226757369614,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_202730.wav",
+      "origin_start": 2.3496825396825396,
+      "origin_end": 5.802947845804988,
+      "mixture_start": 5.246263564070377,
+      "mixture_end": 8.699551404057756,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_124734.wav",
+      "origin_start": 1.6997052154195011,
+      "origin_end": 5.471746031746032,
+      "mixture_start": 0.8827973711706689,
+      "mixture_end": 4.654856606633622,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_2dist_175_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_175_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..cf66a56fd6175d94c29acb0ed922f4118dfaf871
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_175_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "supermarket_2dist_175_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "ringtone",
+    "footsteps"
+  ],
+  "audio_file": "supermarket_2dist_175_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_251.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.819750566893424,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_062.mp3",
+      "origin_start": 242.11274376417234,
+      "origin_end": 252.11274376417234,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_352657.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.18421768707483,
+      "mixture_start": 7.545307667102825,
+      "mixture_end": 8.729525354177655,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_90336.wav",
+      "origin_start": 2.625714285714286,
+      "origin_end": 5.335147392290249,
+      "mixture_start": 1.2766308152536663,
+      "mixture_end": 3.986082835318423,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_2dist_190_rep4.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_190_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..7d52b3b50f0a12332a166bc183a8577c0ad0c1c0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_190_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "supermarket_2dist_190_rep4",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "gunshot",
+    "slam"
+  ],
+  "audio_file": "supermarket_2dist_190_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p240/p240_169.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6035600907029477,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Supermarket/asmr_Supermarket_Dp9yBndP-1A_chunk_003.mp3",
+      "origin_start": 14.28,
+      "origin_end": 24.28,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_159710.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6950566893424037,
+      "mixture_start": 0.27588392375474713,
+      "mixture_end": 1.970940613097151,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_219587.wav",
+      "origin_start": 0.7540816326530613,
+      "origin_end": 3.6960317460317462,
+      "mixture_start": 4.961973154587979,
+      "mixture_end": 7.903928258428749,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove slam and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_2dist_191_rep4.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_191_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..ef30e7d55d34d0525508fdfb8f16ea614040a2c1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_191_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "supermarket_2dist_191_rep4",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "hammer"
+  ],
+  "audio_file": "supermarket_2dist_191_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p245/p245_222.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.5619047619047617,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_079.mp3",
+      "origin_start": 231.0447619047619,
+      "origin_end": 241.0447619047619,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_138114.wav",
+      "origin_start": 4.893560090702948,
+      "origin_end": 7.97219954648526,
+      "mixture_start": 4.106391751177506,
+      "mixture_end": 7.185052366248459,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_395863.wav",
+      "origin_start": 17.211950113378684,
+      "origin_end": 19.485102040816326,
+      "mixture_start": 7.1156536246212365,
+      "mixture_end": 9.388815934635698,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_208_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_208_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..6bb370d8c69b9080714bad3306a046298956593a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_208_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "supermarket_3dist_208_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "sneeze",
+    "jackhammer"
+  ],
+  "audio_file": "supermarket_3dist_208_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p243/p243_052.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.608344671201814,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_065.mp3",
+      "origin_start": 254.13349206349207,
+      "origin_end": 264.13349206349204,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_369841.wav",
+      "origin_start": 4.921814058956916,
+      "origin_end": 8.246190476190476,
+      "mixture_start": 5.081662152947359,
+      "mixture_end": 8.40603966344841,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_368801.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9171882086167801,
+      "mixture_start": 1.269737278347065,
+      "mixture_end": 2.1869254869638453,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_400991.wav",
+      "origin_start": 7.953038548752835,
+      "origin_end": 10.359795918367347,
+      "mixture_start": 3.052466619934777,
+      "mixture_end": 5.4592400244612875,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and sneeze and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and sneeze and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep sneeze and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and jackhammer and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep cellphone buzz vibrating alert and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and sneeze and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove cellphone buzz vibrating alert and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and jackhammer and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_212_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_212_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..ee1a8fbdf29fb9f1da9b82ea717203faa985d6de
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_212_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "supermarket_3dist_212_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "cough",
+    "jackhammer"
+  ],
+  "audio_file": "supermarket_3dist_212_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_254.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.4345351473922903,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_062.mp3",
+      "origin_start": 166.2095238095238,
+      "origin_end": 176.2095238095238,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_414923.wav",
+      "origin_start": 3.8711337868480724,
+      "origin_end": 6.7942857142857145,
+      "mixture_start": 2.8285848504765445,
+      "mixture_end": 5.751741669627492,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/fsd50k_325569.wav",
+      "origin_start": 0.08845804988662131,
+      "origin_end": 2.2517233560090704,
+      "mixture_start": 7.538634890915268,
+      "mixture_end": 9.701920134709473,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386244.wav",
+      "origin_start": 0.3193877551020408,
+      "origin_end": 2.5533560090702947,
+      "mixture_start": 5.014607389213465,
+      "mixture_end": 7.248590148328232,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and cough and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and cough and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cough",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cough and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and jackhammer and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep applause and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and cough and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and cough and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove applause and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove cough and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_224_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_224_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..a452b143292ab7e78e9ab4d36d26ece16f96b256
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_224_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "supermarket_3dist_224_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "boom",
+    "gunshot",
+    "hammer"
+  ],
+  "audio_file": "supermarket_3dist_224_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_356.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2449433106575962,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_6HPYhhWjv-8_chunk_022.mp3",
+      "origin_start": 90.3555328798186,
+      "origin_end": 100.3555328798186,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_434425.wav",
+      "origin_start": 0.009705215419501133,
+      "origin_end": 2.2419274376417233,
+      "mixture_start": 5.887622564580752,
+      "mixture_end": 8.119853260514773,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_417686.wav",
+      "origin_start": 0.005124716553287982,
+      "origin_end": 3.1556009070294784,
+      "mixture_start": 0.30379243753006435,
+      "mixture_end": 3.4542709338126922,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_146257.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6849886621315193,
+      "mixture_start": 3.8648351286420195,
+      "mixture_end": 4.549823790773539,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove boom and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and gunshot and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and gunshot and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and keep gunshot and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and hammer and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and gunshot and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and gunshot and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove boom and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and hammer and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_238_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_238_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..89da8e17fd8b7331078ce6e8512ee6549f7e5997
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_238_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "supermarket_3dist_238_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "glass_breaking",
+    "siren"
+  ],
+  "audio_file": "supermarket_3dist_238_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_247.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9215192743764173,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_122.mp3",
+      "origin_start": 10.060884353741496,
+      "origin_end": 20.060884353741496,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_189828.wav",
+      "origin_start": 4.692902494331066,
+      "origin_end": 7.7319727891156464,
+      "mixture_start": 2.111763020293027,
+      "mixture_end": 5.1508348852029435,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_390728.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9636281179138322,
+      "mixture_start": 3.126709206183777,
+      "mixture_end": 4.090337324097609,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_382620.wav",
+      "origin_start": 0.19063492063492063,
+      "origin_end": 2.9850566893424038,
+      "mixture_start": 7.017766017694597,
+      "mixture_end": 9.812201018620932,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and glass breaking and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and glass breaking and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep glass breaking and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep applause and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep applause and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and glass breaking and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove applause and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove glass breaking and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_253_rep1.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_253_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..2644b2f9112a25b7c0d2c0f5931169dd06a9dc5e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_253_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "supermarket_3dist_253_rep1",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "baby_cry",
+    "glass_breaking"
+  ],
+  "audio_file": "supermarket_3dist_253_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p280/p280_183.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.462448979591837,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_081.mp3",
+      "origin_start": 195.1520634920635,
+      "origin_end": 205.1520634920635,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/fsd50k_331056.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5456689342403628,
+      "mixture_start": 4.992676795332793,
+      "mixture_end": 5.538345729573155,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/esc-50_1-22694-A-20.wav",
+      "origin_start": 0.4083219954648526,
+      "origin_end": 3.3607482993197277,
+      "mixture_start": 2.0625286809099825,
+      "mixture_end": 5.014959412268915,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_326422.wav",
+      "origin_start": 0.05643990929705216,
+      "origin_end": 2.863265306122449,
+      "mixture_start": 6.0326532113609685,
+      "mixture_end": 8.839492854726188,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and baby cry and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and glass breaking and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and glass breaking and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove cough and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and glass breaking and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and glass breaking and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_253_rep4.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_253_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..23379277f57a8e549ec0959b4c62354c32834aac
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_253_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "supermarket_3dist_253_rep4",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "baby_cry",
+    "glass_breaking"
+  ],
+  "audio_file": "supermarket_3dist_253_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_159.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.224965986394558,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_034.mp3",
+      "origin_start": 111.32310657596372,
+      "origin_end": 121.32310657596372,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_90073.wav",
+      "origin_start": 3.222675736961451,
+      "origin_end": 6.49687074829932,
+      "mixture_start": 0.3260868854597802,
+      "mixture_end": 3.600286212251836,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_442655.wav",
+      "origin_start": 3.840498866213152,
+      "origin_end": 6.087913832199546,
+      "mixture_start": 2.7111379576053034,
+      "mixture_end": 4.958558423642236,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_42903.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7314285714285714,
+      "mixture_start": 4.284382516939561,
+      "mixture_end": 5.015811088368133,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and baby cry and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and glass breaking and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and glass breaking and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove cough and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and glass breaking and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and glass breaking and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_256_rep4.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_256_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..1f25eb446cfadbe875923a93e22db03e73b6cffb
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_256_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "supermarket_3dist_256_rep4",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "boom",
+    "hammer"
+  ],
+  "audio_file": "supermarket_3dist_256_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p243/p243_358.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.503514739229025,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_6HPYhhWjv-8_chunk_016.mp3",
+      "origin_start": 154.51530612244898,
+      "origin_end": 164.51530612244898,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_196330.wav",
+      "origin_start": 0.09170068027210884,
+      "origin_end": 2.6245124716553287,
+      "mixture_start": 5.441509471886705,
+      "mixture_end": 7.974324104966856,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_347311.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.3583673469387756,
+      "mixture_start": 3.100501929374137,
+      "mixture_end": 4.458869276312913,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_362433.wav",
+      "origin_start": 9.849501133786848,
+      "origin_end": 11.993106575963719,
+      "mixture_start": 3.728631607459283,
+      "mixture_end": 5.872252398031387,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and boom and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and boom and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and hammer and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and hammer and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep applause and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and boom and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and hammer and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove boom and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_270_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_270_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..2659ec4083bed7b361dc382465584a28f036c514
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_270_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "supermarket_3dist_270_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "drill",
+    "boom",
+    "jackhammer"
+  ],
+  "audio_file": "supermarket_3dist_270_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_109.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.271655328798186,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_023.mp3",
+      "origin_start": 58.64136054421769,
+      "origin_end": 68.64136054421769,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_386178.wav",
+      "origin_start": 0.4820408163265306,
+      "origin_end": 3.425827664399093,
+      "mixture_start": 2.6778543428231556,
+      "mixture_end": 5.621658695576526,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_350604.wav",
+      "origin_start": 0.10997732426303855,
+      "origin_end": 3.77108843537415,
+      "mixture_start": 6.22718887328587,
+      "mixture_end": 9.888319840777019,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_400991.wav",
+      "origin_start": 10.427823129251701,
+      "origin_end": 12.69095238095238,
+      "mixture_start": 0.5704094148743152,
+      "mixture_end": 2.833543326519413,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and boom and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "boom",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and boom and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "boom",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and jackhammer and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep drill and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep drill and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and boom and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and jackhammer and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and remove boom and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_278_rep1.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_278_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..a56a0080f3da24a91d2dc4a34c58bf00a0a58cf7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_278_rep1.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "supermarket_3dist_278_rep1",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "boom",
+    "siren"
+  ],
+  "audio_file": "supermarket_3dist_278_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p285/p285_008.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.9163718820861675,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_117.mp3",
+      "origin_start": 131.91773242630384,
+      "origin_end": 141.91773242630384,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_326730.wav",
+      "origin_start": 6.216031746031746,
+      "origin_end": 9.171043083900226,
+      "mixture_start": 3.7022582156626433,
+      "mixture_end": 6.657289570889256,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_323316.wav",
+      "origin_start": 0.06612244897959184,
+      "origin_end": 2.576780045351474,
+      "mixture_start": 7.133089748872638,
+      "mixture_end": 9.643768965905657,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-70936-A-42.wav",
+      "origin_start": 0.9679818594104308,
+      "origin_end": 4.419319727891157,
+      "mixture_start": 0.07069779080618815,
+      "mixture_end": 3.5220358221663917,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and boom and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and boom and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and siren and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and siren and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep cellphone buzz vibrating alert and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and boom and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and siren and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove boom and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_279_rep1.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_279_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..6d6069a7e43aa0726f8a3a9f96b74066f889e95f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_279_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "supermarket_3dist_279_rep1",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "boom",
+    "gunshot"
+  ],
+  "audio_file": "supermarket_3dist_279_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_186.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.3802947845804985,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_076.mp3",
+      "origin_start": 249.40108843537416,
+      "origin_end": 259.40108843537416,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_274638.wav",
+      "origin_start": 0.03741496598639456,
+      "origin_end": 2.153083900226757,
+      "mixture_start": 6.461469628729818,
+      "mixture_end": 8.577150355487014,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_322501.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.2306349206349205,
+      "mixture_start": 5.936090006653727,
+      "mixture_end": 7.166747603025609,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_87457.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5456689342403628,
+      "mixture_start": 6.798170115731031,
+      "mixture_end": 7.343839049971393,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and boom and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and boom and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep boom and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and gunshot and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and boom and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and boom and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and gunshot and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and gunshot and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_280_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_280_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..e6574a0678408d9c6ff42a8d09933d8d6ed87041
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_280_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "supermarket_3dist_280_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "ringtone",
+    "jackhammer"
+  ],
+  "audio_file": "supermarket_3dist_280_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_400.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.780702947845805,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_Dp9yBndP-1A_chunk_013.mp3",
+      "origin_start": 226.9625850340136,
+      "origin_end": 236.9625850340136,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/fsd50k_148310.wav",
+      "origin_start": 1.284512471655329,
+      "origin_end": 4.47718820861678,
+      "mixture_start": 0.46532558506470684,
+      "mixture_end": 3.6580209097314382,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_250630.wav",
+      "origin_start": 0.0664625850340136,
+      "origin_end": 2.12453514739229,
+      "mixture_start": 3.8922830328552407,
+      "mixture_end": 5.9503764172289415,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386298.wav",
+      "origin_start": 5.068185941043084,
+      "origin_end": 9.063809523809525,
+      "mixture_start": 5.935354693819028,
+      "mixture_end": 9.930982318512774,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and ringtone and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep ringtone and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep cough and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep cough and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cough and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and jackhammer and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove ringtone and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_285_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_285_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..bb46390b33d40f82be493d48825e725a16c9bee6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_285_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "supermarket_3dist_285_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "fire_alarm",
+    "footsteps"
+  ],
+  "audio_file": "supermarket_3dist_285_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p229/p229_138.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.115873015873016,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_068.mp3",
+      "origin_start": 67.44428571428571,
+      "origin_end": 77.44428571428571,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_368801.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9171882086167801,
+      "mixture_start": 4.544272393379757,
+      "mixture_end": 5.461460601996537,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_124734.wav",
+      "origin_start": 2.5939909297052153,
+      "origin_end": 5.510702947845805,
+      "mixture_start": 5.706680882233397,
+      "mixture_end": 8.623401524594325,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_166305.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.81297052154195,
+      "mixture_start": 4.658573978321884,
+      "mixture_end": 6.471544499863834,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and fire alarm and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and fire alarm and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep fire alarm and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep sneeze and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and fire alarm and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove sneeze and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove sneeze and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove fire alarm and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_292_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_292_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..80cdcc9e1b3a72f6f8206b971dc1d419e9183d8e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_292_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "supermarket_3dist_292_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "ringtone",
+    "alarm_clock",
+    "slam"
+  ],
+  "audio_file": "supermarket_3dist_292_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_124.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8829251700680274,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_035.mp3",
+      "origin_start": 150.4884126984127,
+      "origin_end": 160.4884126984127,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167533.wav",
+      "origin_start": 4.2478231292517,
+      "origin_end": 6.262335600907029,
+      "mixture_start": 1.1360540405327828,
+      "mixture_end": 3.1505805035818994,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/val/alarm_clock/esc-50_4-172366-A-37.wav",
+      "origin_start": 0.4383219954648526,
+      "origin_end": 4.188299319727891,
+      "mixture_start": 5.8984583618280775,
+      "mixture_end": 9.648438904525655,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_73068.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.799546485260771,
+      "mixture_start": 4.30807949524973,
+      "mixture_end": 6.107625980510502,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove ringtone and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and alarm clock and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep slam and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove slam and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep alarm clock and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and slam and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove ringtone and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove ringtone and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and slam and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_297_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_297_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..af34e5f64bb521679d4e84ccf5be3ed689c9a9bc
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_297_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "supermarket_3dist_297_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "boom",
+    "siren"
+  ],
+  "audio_file": "supermarket_3dist_297_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p265/p265_312.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.605714285714286,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_124.mp3",
+      "origin_start": 86.5498866213152,
+      "origin_end": 96.5498866213152,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_60997.wav",
+      "origin_start": 7.519138321995465,
+      "origin_end": 9.767913832199547,
+      "mixture_start": 0.296288694111234,
+      "mixture_end": 2.5450834358069603,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_178182.wav",
+      "origin_start": 1.0561904761904761,
+      "origin_end": 3.417732426303855,
+      "mixture_start": 6.685244012007021,
+      "mixture_end": 9.046795313479896,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_377126.wav",
+      "origin_start": 2.8661904761904764,
+      "origin_end": 5.982789115646258,
+      "mixture_start": 2.4420232414445158,
+      "mixture_end": 5.558635736674326,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and boom and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and boom and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep boom and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep baby cry and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and boom and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove baby cry and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove baby cry and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and siren and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/supermarket_3dist_299_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_299_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..6841b425b0ea1280d9d4a13dcdb089ff999e06d9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_299_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "supermarket_3dist_299_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "drill",
+    "baby_cry",
+    "glass_breaking"
+  ],
+  "audio_file": "supermarket_3dist_299_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_057.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.7357369614512472,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_Dp9yBndP-1A_chunk_006.mp3",
+      "origin_start": 235.62444444444444,
+      "origin_end": 245.62444444444444,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_236327.wav",
+      "origin_start": 0.0245578231292517,
+      "origin_end": 2.0816326530612246,
+      "mixture_start": 4.455986096268725,
+      "mixture_end": 6.513075297979746,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/esc-50_3-151081-B-20.wav",
+      "origin_start": 0.14471655328798186,
+      "origin_end": 2.720294784580499,
+      "mixture_start": 1.3053055588802887,
+      "mixture_end": 3.880887242131494,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_213156.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9752380952380952,
+      "mixture_start": 3.220006839414006,
+      "mixture_end": 4.195244934652101,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and baby cry and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and baby cry and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and keep baby cry and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep drill and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep drill and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove drill and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove drill and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and remove baby cry and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_004_rep3.json b/data/audio_mixtures_no_speech/train/train_1dist_004_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..075f0973dd0719e47ccf71b665757b76a091db84
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_004_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_004_rep3",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "boom"
+  ],
+  "audio_file": "train_1dist_004_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_360.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.073922902494331,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_009.mp3",
+      "origin_start": 20.457120181405894,
+      "origin_end": 30.457120181405894,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_128520.wav",
+      "origin_start": 0.7456462585034014,
+      "origin_end": 3.4737868480725624,
+      "mixture_start": 5.896299551300727,
+      "mixture_end": 8.624454248100562,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_011_rep4.json b/data/audio_mixtures_no_speech/train/train_1dist_011_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..b0a0b422a61480fdd620b3a37667977cf25ab8cb
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_011_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_011_rep4",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "train_1dist_011_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p225/p225_018.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.362267573696145,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_022.mp3",
+      "origin_start": 91.82253968253968,
+      "origin_end": 101.82253968253968,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_117570.wav",
+      "origin_start": 1.8812698412698412,
+      "origin_end": 4.333197278911564,
+      "mixture_start": 1.8473871423635668,
+      "mixture_end": 4.299334237196431,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_012_rep4.json b/data/audio_mixtures_no_speech/train/train_1dist_012_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..6b8884f364941a717558225f27a336f10b4aa842
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_012_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_012_rep4",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "train_horn"
+  ],
+  "audio_file": "train_1dist_012_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p245/p245_057.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.24578231292517,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_008.mp3",
+      "origin_start": 164.41231292517006,
+      "origin_end": 174.41231292517006,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "train_horn",
+      "display_name": "train horn",
+      "original_path": "distractors/train/train_horn/fsd50k_72531.wav",
+      "origin_start": 18.48562358276644,
+      "origin_end": 21.535374149659862,
+      "mixture_start": 1.33382734529126,
+      "mixture_end": 4.383591692073318,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove train horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_018_rep3.json b/data/audio_mixtures_no_speech/train/train_1dist_018_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..b90c44f8cff0ef7ef6378f5603e17f02501f847f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_018_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "train_1dist_018_rep3",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "computer_typing"
+  ],
+  "audio_file": "train_1dist_018_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_217.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.143673469387755,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_001.mp3",
+      "origin_start": 173.49691609977324,
+      "origin_end": 183.49691609977324,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/esc-50_3-125548-A-32.wav",
+      "origin_start": 0.880907029478458,
+      "origin_end": 3.593469387755102,
+      "mixture_start": 6.614950022558436,
+      "mixture_end": 9.327522019551829,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_030_rep3.json b/data/audio_mixtures_no_speech/train/train_1dist_030_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..83f639ff2c9d3760809a4d8a3e0600d8c0b408fe
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_030_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_030_rep3",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "train_1dist_030_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p282/p282_291.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9492517006802723,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_001.mp3",
+      "origin_start": 89.16160997732426,
+      "origin_end": 99.16160997732426,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_179012.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0913378684807256,
+      "mixture_start": 5.314345294191723,
+      "mixture_end": 6.405683162672449,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_038_rep2.json b/data/audio_mixtures_no_speech/train/train_1dist_038_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..a85640df0a9070646f7f5260564e47039d612ff8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_038_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_038_rep2",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "train_1dist_038_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p271/p271_288.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2019274376417233,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_003.mp3",
+      "origin_start": 268.7389342403628,
+      "origin_end": 278.7389342403628,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_202418.wav",
+      "origin_start": 0.6952380952380952,
+      "origin_end": 4.072857142857143,
+      "mixture_start": 4.016913468374577,
+      "mixture_end": 7.394544925361421,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_045_rep2.json b/data/audio_mixtures_no_speech/train/train_1dist_045_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..c56a2c09c2147b3f08eb9fbf2d98193fcdc57144
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_045_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_045_rep2",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "train_1dist_045_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_455.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2478684807256237,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_014.mp3",
+      "origin_start": 22.857823129251702,
+      "origin_end": 32.8578231292517,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/val/ringtone/fsd50k_250632.wav",
+      "origin_start": 0.014149659863945578,
+      "origin_end": 2.145895691609977,
+      "mixture_start": 2.4022216242331713,
+      "mixture_end": 4.533983676740787,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_056_rep4.json b/data/audio_mixtures_no_speech/train/train_1dist_056_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..6dc6192f2e109cb2442969b72f2dd90a497ec5d8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_056_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_056_rep4",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "train_1dist_056_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_156.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.4162131519274377,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_017.mp3",
+      "origin_start": 210.46351473922903,
+      "origin_end": 220.46351473922903,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_352667.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.905578231292517,
+      "mixture_start": 0.1268522099184151,
+      "mixture_end": 1.0324304412109322,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_062_rep4.json b/data/audio_mixtures_no_speech/train/train_1dist_062_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..3295ae2663ef17326f4557e5fdcf3906fddbcfae
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_062_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "train_1dist_062_rep4",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "hammer"
+  ],
+  "audio_file": "train_1dist_062_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p229/p229_100.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8023582766439907,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_017.mp3",
+      "origin_start": 130.34238095238095,
+      "origin_end": 140.34238095238095,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/val/hammer/fsd50k_366844.wav",
+      "origin_start": 5.205600907029479,
+      "origin_end": 8.174580498866213,
+      "mixture_start": 3.9070102281949697,
+      "mixture_end": 6.875998675045155,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_066_rep4.json b/data/audio_mixtures_no_speech/train/train_1dist_066_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..cdc19bc1ce619e51c4e01bb0672005a568226497
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_066_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_066_rep4",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "train_1dist_066_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_364.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3472562358276643,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Train/asmr_Train_K92rkjZeTng_chunk_012.mp3",
+      "origin_start": 121.85356009070294,
+      "origin_end": 131.85356009070296,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_212531.wav",
+      "origin_start": 0.0919047619047619,
+      "origin_end": 3.72421768707483,
+      "mixture_start": 2.3862042934526673,
+      "mixture_end": 6.018518974101324,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_068_rep2.json b/data/audio_mixtures_no_speech/train/train_1dist_068_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..f89e2961e5a65f423ca711c5b5f6ba22d6c52002
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_068_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "train_1dist_068_rep2",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "alarm_clock"
+  ],
+  "audio_file": "train_1dist_068_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_041.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.7356009070294784,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_000.mp3",
+      "origin_start": 244.68673469387755,
+      "origin_end": 254.68673469387755,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_2-89516-A-37.wav",
+      "origin_start": 0.4692743764172336,
+      "origin_end": 4.408208616780045,
+      "mixture_start": 4.900164782487286,
+      "mixture_end": 8.839110416702074,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_072_rep1.json b/data/audio_mixtures_no_speech/train/train_1dist_072_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..629b1d969b632317d4a199ebdd04e0b518fd3eb1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_072_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_072_rep1",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "train_horn"
+  ],
+  "audio_file": "train_1dist_072_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p278/p278_078.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2030839002267575,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_002.mp3",
+      "origin_start": 241.99426303854875,
+      "origin_end": 251.99426303854875,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "train_horn",
+      "display_name": "train horn",
+      "original_path": "distractors/train/train_horn/fsd50k_72531.wav",
+      "origin_start": 12.31546485260771,
+      "origin_end": 16.217142857142857,
+      "mixture_start": 1.480446683074715,
+      "mixture_end": 5.382133201741443,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove train horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_073_rep3.json b/data/audio_mixtures_no_speech/train/train_1dist_073_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..d11c8154be8d224e7b24c48f9a907e14585d1ce4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_073_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "train_1dist_073_rep3",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "train_1dist_073_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p281/p281_382.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.78374149659864,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_014.mp3",
+      "origin_start": 53.02560090702948,
+      "origin_end": 63.02560090702948,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/esc-50_1-211527-B-20.wav",
+      "origin_start": 0.3734013605442177,
+      "origin_end": 2.613219954648526,
+      "mixture_start": 0.2627866205900437,
+      "mixture_end": 2.5026078399607403,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_077_rep1.json b/data/audio_mixtures_no_speech/train/train_1dist_077_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..5406bc9837f471de32360cdf10c7106b66f08bd7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_077_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "train_1dist_077_rep1",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "applause"
+  ],
+  "audio_file": "train_1dist_077_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_171.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.587437641723356,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_005.mp3",
+      "origin_start": 21.140408163265306,
+      "origin_end": 31.140408163265306,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_75059.wav",
+      "origin_start": 0.5180498866213152,
+      "origin_end": 3.711859410430839,
+      "mixture_start": 1.4072671286412224,
+      "mixture_end": 4.601080607789946,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_078_rep1.json b/data/audio_mixtures_no_speech/train/train_1dist_078_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..c745f5771357641bb7ebc7642ef530f166674a44
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_078_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_078_rep1",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "train_1dist_078_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p258/p258_316.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.953605442176871,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_017.mp3",
+      "origin_start": 246.13877551020408,
+      "origin_end": 256.1387755102041,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_151065.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.509297052154195,
+      "mixture_start": 5.088293928111786,
+      "mixture_end": 6.597590980265981,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_079_rep1.json b/data/audio_mixtures_no_speech/train/train_1dist_079_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..d2ed98d0ce9f5df52af3a3bbf2c67c720ea2d21e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_079_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "train_1dist_079_rep1",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "hammer"
+  ],
+  "audio_file": "train_1dist_079_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p278/p278_063.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.393809523809524,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_008.mp3",
+      "origin_start": 233.95526077097506,
+      "origin_end": 243.95526077097506,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_67709.wav",
+      "origin_start": 4.568662131519274,
+      "origin_end": 6.922585034013605,
+      "mixture_start": 2.0859701962783985,
+      "mixture_end": 4.43990432026153,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_087_rep3.json b/data/audio_mixtures_no_speech/train/train_1dist_087_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..425d144e4c8db5e2df51e38b4842128932b2a5de
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_087_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "train_1dist_087_rep3",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "cough"
+  ],
+  "audio_file": "train_1dist_087_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_075.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.054829931972789,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_019.mp3",
+      "origin_start": 22.77562358276644,
+      "origin_end": 32.77562358276644,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_52266.wav",
+      "origin_start": 0.4684580498866213,
+      "origin_end": 2.8556462585034015,
+      "mixture_start": 1.7273117176910033,
+      "mixture_end": 4.11450507785942,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_088_rep4.json b/data/audio_mixtures_no_speech/train/train_1dist_088_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..584e9654f97cb2ab5618e99e43c16a25a0254b4c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_088_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "train_1dist_088_rep4",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "train_1dist_088_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p228/p228_044.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.353605442176871,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_003.mp3",
+      "origin_start": 63.431224489795916,
+      "origin_end": 73.43122448979592,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_31985_4.wav",
+      "origin_start": 3.9312244897959183,
+      "origin_end": 6.6177551020408165,
+      "mixture_start": 5.177011692606841,
+      "mixture_end": 7.86355037234102,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_1dist_099_rep4.json b/data/audio_mixtures_no_speech/train/train_1dist_099_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..972c7eec6a94d6ad8702273566b67863759f689e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_099_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_099_rep4",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "train_horn"
+  ],
+  "audio_file": "train_1dist_099_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p280/p280_075.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.565668934240363,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_005.mp3",
+      "origin_start": 33.521972789115644,
+      "origin_end": 43.521972789115644,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "train_horn",
+      "display_name": "train horn",
+      "original_path": "distractors/train/train_horn/fsd50k_18529.wav",
+      "origin_start": 7.6328344671201815,
+      "origin_end": 9.704240362811792,
+      "mixture_start": 5.594175108620431,
+      "mixture_end": 7.665597125483778,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove train horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_2dist_102_rep2.json b/data/audio_mixtures_no_speech/train/train_2dist_102_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..bab30df3b9e6fb8edc3ea731cca1d766af9e0011
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_102_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "train_2dist_102_rep2",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "computer_typing",
+    "hammer"
+  ],
+  "audio_file": "train_2dist_102_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p225/p225_248.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.819546485260771,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_023.mp3",
+      "origin_start": 248.4604081632653,
+      "origin_end": 258.4604081632653,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/esc-50_3-132830-A-32.wav",
+      "origin_start": 0.2756916099773243,
+      "origin_end": 3.1055555555555556,
+      "mixture_start": 3.1310251385444743,
+      "mixture_end": 5.960898293379897,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_147382.wav",
+      "origin_start": 1.3811111111111112,
+      "origin_end": 3.837369614512472,
+      "mixture_start": 5.3761797085874985,
+      "mixture_end": 7.832447659695442,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_2dist_106_rep1.json b/data/audio_mixtures_no_speech/train/train_2dist_106_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..39cbcb976d27fdd688c2509f9a613a96bc3f385e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_106_rep1.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "train_2dist_106_rep1",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "boom",
+    "glass_breaking"
+  ],
+  "audio_file": "train_2dist_106_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_052.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.0121995464852604,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_015.mp3",
+      "origin_start": 79.82659863945578,
+      "origin_end": 89.82659863945578,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_396795.wav",
+      "origin_start": 0.6859637188208617,
+      "origin_end": 4.197641723356009,
+      "mixture_start": 1.2660152013280601,
+      "mixture_end": 4.777696767664356,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_204120.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8823582766439909,
+      "mixture_start": 3.536473325084068,
+      "mixture_end": 4.418831601728059,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_2dist_116_rep4.json b/data/audio_mixtures_no_speech/train/train_2dist_116_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..8581d7d698ff7f2d7c1ebd0abcf469efaa292ea1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_116_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "train_2dist_116_rep4",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "footsteps"
+  ],
+  "audio_file": "train_2dist_116_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_018.wav",
+      "origin_start": 0.0,
+      "origin_end": 7.428004535147393,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_024.mp3",
+      "origin_start": 0.0,
+      "origin_end": 7.144603174603175,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_198411_11.wav",
+      "origin_start": 9.401451247165532,
+      "origin_end": 13.244897959183673,
+      "mixture_start": 2.407257404891513,
+      "mixture_end": 6.250708485743123,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/val/footsteps/fsd50k_213298.wav",
+      "origin_start": 3.408662131519274,
+      "origin_end": 6.32281179138322,
+      "mixture_start": 6.298230972743984,
+      "mixture_end": 9.21238366342996,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_2dist_135_rep1.json b/data/audio_mixtures_no_speech/train/train_2dist_135_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..1171285ee9910d3b06087dc51d2683f0293fc6e9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_135_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "train_2dist_135_rep1",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "hammer",
+    "slam"
+  ],
+  "audio_file": "train_2dist_135_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p240/p240_162.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.821156462585034,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_015.mp3",
+      "origin_start": 270.9098185941043,
+      "origin_end": 280.9098185941043,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_17908.wav",
+      "origin_start": 2.7410430839002267,
+      "origin_end": 5.169342403628118,
+      "mixture_start": 0.4506376455265976,
+      "mixture_end": 2.8789370065988007,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_52289.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9752380952380952,
+      "mixture_start": 4.3545430973518044,
+      "mixture_end": 5.3297811925899,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove slam and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_2dist_136_rep2.json b/data/audio_mixtures_no_speech/train/train_2dist_136_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..f3d8711a6e10dc22f88fc0769eec0e365d7bffa9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_136_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "train_2dist_136_rep2",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "gunshot"
+  ],
+  "audio_file": "train_2dist_136_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_132.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.119297052154195,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_003.mp3",
+      "origin_start": 199.55839002267572,
+      "origin_end": 209.55839002267572,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/esc-50_2-66637-A-20.wav",
+      "origin_start": 0.18836734693877552,
+      "origin_end": 4.100498866213152,
+      "mixture_start": 5.595354840009888,
+      "mixture_end": 9.507503398486769,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_101961.wav",
+      "origin_start": 9.295850340136054,
+      "origin_end": 11.30467120181406,
+      "mixture_start": 4.386471588881646,
+      "mixture_end": 6.395308516777658,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_2dist_137_rep2.json b/data/audio_mixtures_no_speech/train/train_2dist_137_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..d0c87cb6ac464c75581567d4fc1c13542040d6b3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_137_rep2.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "train_2dist_137_rep2",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "boom"
+  ],
+  "audio_file": "train_2dist_137_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_228.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.7551020408163267,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_000.mp3",
+      "origin_start": 23.043990929705217,
+      "origin_end": 33.04399092970522,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_69585.wav",
+      "origin_start": 0.8788208616780046,
+      "origin_end": 3.074739229024943,
+      "mixture_start": 6.80008854831799,
+      "mixture_end": 8.996024897534312,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_56603.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8790249433106576,
+      "mixture_start": 6.977997687626463,
+      "mixture_end": 7.85702263093712,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_2dist_143_rep4.json b/data/audio_mixtures_no_speech/train/train_2dist_143_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..88981bfeab80ed61e6bac652de5cdf59bf41604f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_143_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "train_2dist_143_rep4",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "computer_typing"
+  ],
+  "audio_file": "train_2dist_143_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_266.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.544263038548753,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_000.mp3",
+      "origin_start": 5.985600907029479,
+      "origin_end": 15.985600907029479,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_256211.wav",
+      "origin_start": 0.014444444444444444,
+      "origin_end": 2.6044897959183673,
+      "mixture_start": 5.689449423736095,
+      "mixture_end": 8.279502854640166,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/val/computer_typing/fsd50k_331158.wav",
+      "origin_start": 3.929138321995465,
+      "origin_end": 7.840975056689342,
+      "mixture_start": 0.8039246215558946,
+      "mixture_end": 4.715771812283548,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_2dist_146_rep4.json b/data/audio_mixtures_no_speech/train/train_2dist_146_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..20b6eff8f7b23d1f299241ed0c1c8aa9be85cba1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_146_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "train_2dist_146_rep4",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "baby_cry"
+  ],
+  "audio_file": "train_2dist_146_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_402.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.858979591836735,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_009.mp3",
+      "origin_start": 88.84666666666666,
+      "origin_end": 98.84666666666666,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/val/alarm_clock/esc-50_4-204684-A-37.wav",
+      "origin_start": 1.4663492063492063,
+      "origin_end": 4.185895691609978,
+      "mixture_start": 2.971620484689109,
+      "mixture_end": 5.691175338984396,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_271350_2.wav",
+      "origin_start": 1.3742857142857143,
+      "origin_end": 3.6657596371882084,
+      "mixture_start": 5.567181762665661,
+      "mixture_end": 7.858668977613815,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_2dist_154_rep1.json b/data/audio_mixtures_no_speech/train/train_2dist_154_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..358c1daa51b8e502bf43ffbd48865c6f098a472b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_154_rep1.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "train_2dist_154_rep1",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "hammer"
+  ],
+  "audio_file": "train_2dist_154_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_063.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.009501133786848,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_022.mp3",
+      "origin_start": 172.1397505668934,
+      "origin_end": 182.1397505668934,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_189190.wav",
+      "origin_start": 11.950884353741497,
+      "origin_end": 15.787324263038549,
+      "mixture_start": 5.150483794285245,
+      "mixture_end": 8.986930529091602,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_147382.wav",
+      "origin_start": 2.077687074829932,
+      "origin_end": 5.974671201814059,
+      "mixture_start": 0.13690635157971048,
+      "mixture_end": 4.033891804918692,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_2dist_169_rep2.json b/data/audio_mixtures_no_speech/train/train_2dist_169_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..d17ad9f00b542aa3c917f9b68c6bad3b5da0239e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_169_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "train_2dist_169_rep2",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "footsteps",
+    "siren"
+  ],
+  "audio_file": "train_2dist_169_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p285/p285_052.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0516326530612243,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_002.mp3",
+      "origin_start": 49.156780045351475,
+      "origin_end": 59.156780045351475,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_348752.wav",
+      "origin_start": 0.053854875283446714,
+      "origin_end": 2.12968253968254,
+      "mixture_start": 3.3476088401782342,
+      "mixture_end": 5.423436529624435,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/val/siren/esc-50_4-67358-A-42.wav",
+      "origin_start": 0.5794104308390022,
+      "origin_end": 3.3733786848072564,
+      "mixture_start": 6.83462461937466,
+      "mixture_end": 9.628608460193991,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_2dist_173_rep2.json b/data/audio_mixtures_no_speech/train/train_2dist_173_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..79a116ca41da3d247e971ad42a3d388dbb49037f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_173_rep2.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "train_2dist_173_rep2",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "train_horn",
+    "siren"
+  ],
+  "audio_file": "train_2dist_173_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_051.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.499433106575964,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_006.mp3",
+      "origin_start": 44.00698412698413,
+      "origin_end": 54.00698412698413,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "train_horn",
+      "display_name": "train horn",
+      "original_path": "distractors/train/train_horn/fsd50k_72531.wav",
+      "origin_start": 16.150068027210885,
+      "origin_end": 19.25111111111111,
+      "mixture_start": 0.48582270439697833,
+      "mixture_end": 3.5868822868343484,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/val/siren/esc-50_4-102871-A-42.wav",
+      "origin_start": 1.0204308390022676,
+      "origin_end": 4.168027210884354,
+      "mixture_start": 6.121915911334113,
+      "mixture_end": 9.26951493064528,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "train_horn",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove train horn and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep train horn and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_2dist_192_rep2.json b/data/audio_mixtures_no_speech/train/train_2dist_192_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..9bb61a75a0125957883631a1b0c8de24cb67fcf1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_192_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "train_2dist_192_rep2",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "glass_breaking"
+  ],
+  "audio_file": "train_2dist_192_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_424.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9907709750566895,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_013.mp3",
+      "origin_start": 179.8781179138322,
+      "origin_end": 189.8781179138322,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_80482.wav",
+      "origin_start": 1.4740589569160998,
+      "origin_end": 5.353968253968254,
+      "mixture_start": 0.8742377403366728,
+      "mixture_end": 4.754166855779424,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/val/glass_breaking/fsd50k_276939.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8243083900226758,
+      "mixture_start": 7.1921506918762175,
+      "mixture_end": 8.016459081898894,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_202_rep1.json b/data/audio_mixtures_no_speech/train/train_3dist_202_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..d840c95c81bfe60fe30cac434280b4f1149f798d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_202_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "train_3dist_202_rep1",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "boom",
+    "hammer"
+  ],
+  "audio_file": "train_3dist_202_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_013.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.3362358276643995,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_022.mp3",
+      "origin_start": 274.5468934240363,
+      "origin_end": 284.5468934240363,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_198411_4.wav",
+      "origin_start": 8.282448979591837,
+      "origin_end": 11.610249433106576,
+      "mixture_start": 1.1003457542745774,
+      "mixture_end": 4.428149139781358,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_186949.wav",
+      "origin_start": 0.006485260770975057,
+      "origin_end": 2.0808843537414967,
+      "mixture_start": 6.957512295536655,
+      "mixture_end": 9.03193216835336,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_321889.wav",
+      "origin_start": 1.6325850340136054,
+      "origin_end": 4.512993197278911,
+      "mixture_start": 3.8148987144119935,
+      "mixture_end": 6.695309018010739,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and boom and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and boom and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep boom and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and hammer and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and boom and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove baby cry and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and hammer and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and hammer and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_214_rep2.json b/data/audio_mixtures_no_speech/train/train_3dist_214_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..7e5d94a01fbbf46c48dcd147ac3afa7296db2c36
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_214_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "train_3dist_214_rep2",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "baby_cry",
+    "slam"
+  ],
+  "audio_file": "train_3dist_214_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p244/p244_104.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.902471655328798,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_015.mp3",
+      "origin_start": 98.99312925170068,
+      "origin_end": 108.99312925170068,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_325777.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6021768707482993,
+      "mixture_start": 1.6770363450608907,
+      "mixture_end": 3.27921321580919,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_259609.wav",
+      "origin_start": 5.804036281179139,
+      "origin_end": 7.847936507936508,
+      "mixture_start": 4.208030733118585,
+      "mixture_end": 6.251950359909663,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/val/slam/fsd50k_89141.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9156462585034013,
+      "mixture_start": 6.435016996206821,
+      "mixture_end": 8.350663254710222,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and baby cry and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and slam and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and slam and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep cough and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove cough and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and slam and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and slam and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_216_rep2.json b/data/audio_mixtures_no_speech/train/train_3dist_216_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..ea08f1c401ab88ee2e1b2b46ce0bcd9aa1e56805
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_216_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "train_3dist_216_rep2",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "train_horn",
+    "fire_alarm",
+    "footsteps"
+  ],
+  "audio_file": "train_3dist_216_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_061.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.782630385487528,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_006.mp3",
+      "origin_start": 177.51122448979592,
+      "origin_end": 187.51122448979592,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "train_horn",
+      "display_name": "train horn",
+      "original_path": "distractors/val/train_horn/fsd50k_332416.wav",
+      "origin_start": 10.079274376417233,
+      "origin_end": 13.32938775510204,
+      "mixture_start": 0.7698451072074842,
+      "mixture_end": 4.019979915786347,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/val/fire_alarm/fsd50k_270643.wav",
+      "origin_start": 1.7480045351473923,
+      "origin_end": 4.959455782312925,
+      "mixture_start": 5.462098793046528,
+      "mixture_end": 8.673566565083288,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/val/footsteps/fsd50k_349101.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.743718820861678,
+      "mixture_start": 1.3229064262806005,
+      "mixture_end": 2.0666252471422784,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove train horn and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove train horn and fire alarm and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep train horn and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and fire alarm and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and footsteps and remove train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep train horn and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and fire alarm and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn and fire alarm and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove train horn and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove fire alarm and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_217_rep1.json b/data/audio_mixtures_no_speech/train/train_3dist_217_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..5d0aa7ac7a80ccf50ac28fb09dda8370cbbc55de
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_217_rep1.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "train_3dist_217_rep1",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "train_horn",
+    "boom",
+    "gunshot"
+  ],
+  "audio_file": "train_3dist_217_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_178.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.1840362811791385,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_002.mp3",
+      "origin_start": 225.46648526077098,
+      "origin_end": 235.46648526077098,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "train_horn",
+      "display_name": "train horn",
+      "original_path": "distractors/train/train_horn/fsd50k_72531.wav",
+      "origin_start": 2.466666666666667,
+      "origin_end": 4.734263038548753,
+      "mixture_start": 4.358072073055942,
+      "mixture_end": 6.625681817089793,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_344686.wav",
+      "origin_start": 0.0021768707482993197,
+      "origin_end": 2.22891156462585,
+      "mixture_start": 1.7396097923869007,
+      "mixture_end": 3.966348742107259,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_349217.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6965759637188209,
+      "mixture_start": 5.708490340995234,
+      "mixture_end": 6.4050889804510165,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn and boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove train horn and boom and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and boom and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn and keep boom and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and gunshot and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep train horn and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn and boom and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and gunshot and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove boom and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_223_rep1.json b/data/audio_mixtures_no_speech/train/train_3dist_223_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..617ff3a79ced38b8c162fa8d455fc44a14fba928
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_223_rep1.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "train_3dist_223_rep1",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "boom",
+    "siren"
+  ],
+  "audio_file": "train_3dist_223_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p268/p268_410.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.0166893424036285,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_005.mp3",
+      "origin_start": 25.349002267573695,
+      "origin_end": 35.349002267573695,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_326730.wav",
+      "origin_start": 3.486530612244898,
+      "origin_end": 6.031678004535148,
+      "mixture_start": 4.0055952147542495,
+      "mixture_end": 6.550752901113734,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_56600.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6327891156462585,
+      "mixture_start": 0.2981573566440173,
+      "mixture_end": 0.9309464722902758,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-70052-B-42.wav",
+      "origin_start": 0.21662131519274377,
+      "origin_end": 3.470657596371882,
+      "mixture_start": 5.554901661361429,
+      "mixture_end": 8.80895175180348,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and boom and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and boom and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep boom and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep cellphone buzz vibrating alert and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep cellphone buzz vibrating alert and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove cellphone buzz vibrating alert and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove cellphone buzz vibrating alert and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove boom and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_230_rep2.json b/data/audio_mixtures_no_speech/train/train_3dist_230_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..7822179dd2207e0cd4e58a4be6afca627d6efee9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_230_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "train_3dist_230_rep2",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "ringtone",
+    "alarm_clock",
+    "slam"
+  ],
+  "audio_file": "train_3dist_230_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p278/p278_041.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.207959183673469,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_019.mp3",
+      "origin_start": 284.7765306122449,
+      "origin_end": 294.7765306122449,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_246390.wav",
+      "origin_start": 14.555056689342404,
+      "origin_end": 18.491020408163266,
+      "mixture_start": 2.423686781221193,
+      "mixture_end": 6.359662140954848,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/val/alarm_clock/fsd50k_265769.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.822766439909297,
+      "mixture_start": 6.5961975125173105,
+      "mixture_end": 8.418963952426608,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_421477.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5340362811791384,
+      "mixture_start": 1.2855569616986584,
+      "mixture_end": 1.8196159186147582,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and alarm clock and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep alarm clock and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and slam and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and alarm clock and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and slam and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove alarm clock and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_237_rep3.json b/data/audio_mixtures_no_speech/train/train_3dist_237_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..d93dfbc00729ca2959347e4e8e318fd058e4c080
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_237_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "train_3dist_237_rep3",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "hammer",
+    "siren"
+  ],
+  "audio_file": "train_3dist_237_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p257/p257_230.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.332222222222222,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_004.mp3",
+      "origin_start": 201.74247165532879,
+      "origin_end": 211.74247165532879,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/val/baby_cry/esc-50_4-185575-C-20.wav",
+      "origin_start": 1.1056462585034013,
+      "origin_end": 3.660408163265306,
+      "mixture_start": 2.5155914921313687,
+      "mixture_end": 5.070367877047879,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_17907.wav",
+      "origin_start": 3.8692517006802722,
+      "origin_end": 6.8205895691609975,
+      "mixture_start": 0.3662768237689852,
+      "mixture_end": 3.3176270558435426,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_67358.wav",
+      "origin_start": 0.7127891156462585,
+      "origin_end": 3.2188208616780045,
+      "mixture_start": 5.642445924434866,
+      "mixture_end": 8.148479355182106,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and hammer and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and hammer and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep hammer and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and siren and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep baby cry and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove baby cry and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and siren and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove hammer and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_238_rep4.json b/data/audio_mixtures_no_speech/train/train_3dist_238_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..f75f8ea34e5ee293b936482b5ef8fabde92a6fb8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_238_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "train_3dist_238_rep4",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "train_horn",
+    "footsteps",
+    "gunshot"
+  ],
+  "audio_file": "train_3dist_238_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p241/p241_101.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.012721088435375,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_000.mp3",
+      "origin_start": 164.02727891156462,
+      "origin_end": 174.02727891156462,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "train_horn",
+      "display_name": "train horn",
+      "original_path": "distractors/train/train_horn/fsd50k_332415.wav",
+      "origin_start": 17.004489795918367,
+      "origin_end": 19.409591836734695,
+      "mixture_start": 2.062135017929049,
+      "mixture_end": 4.467253530557633,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_72737.wav",
+      "origin_start": 0.023560090702947845,
+      "origin_end": 2.7050113378684806,
+      "mixture_start": 0.3399234694353332,
+      "mixture_end": 3.0213789833584297,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/val/gunshot/fsd50k_238242.wav",
+      "origin_start": 0.05820861678004535,
+      "origin_end": 2.302607709750567,
+      "mixture_start": 6.979182016308716,
+      "mixture_end": 9.22358564704611,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove train horn and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove train horn and footsteps and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and footsteps and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn and keep footsteps and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep train horn and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep train horn and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove train horn and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and gunshot and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove footsteps and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_246_rep1.json b/data/audio_mixtures_no_speech/train/train_3dist_246_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..2131c1585649cacfef1b82d8fd8232c943bf323c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_246_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "train_3dist_246_rep1",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "alarm_clock",
+    "gunshot",
+    "slam"
+  ],
+  "audio_file": "train_3dist_246_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_383.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.646689342403628,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_002.mp3",
+      "origin_start": 261.84385487528345,
+      "origin_end": 271.84385487528345,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_13613.wav",
+      "origin_start": 2.109387755102041,
+      "origin_end": 4.824920634920635,
+      "mixture_start": 4.971240878535294,
+      "mixture_end": 7.686778544324334,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_348666.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9636281179138322,
+      "mixture_start": 8.452997601914062,
+      "mixture_end": 9.416625719827893,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_390976.wav",
+      "origin_start": 0.04510204081632653,
+      "origin_end": 2.143151927437642,
+      "mixture_start": 1.0109821239742949,
+      "mixture_end": 3.109051481364057,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and gunshot and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and gunshot and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove slam and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and slam and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and slam and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and gunshot and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove alarm clock and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and slam and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and slam and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_248_rep4.json b/data/audio_mixtures_no_speech/train/train_3dist_248_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..461b81f0f1bbf80249390020ecf989c49a0f4747
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_248_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "train_3dist_248_rep4",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "train_horn",
+    "alarm_clock",
+    "gunshot"
+  ],
+  "audio_file": "train_3dist_248_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p264/p264_494.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.969365079365079,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_007.mp3",
+      "origin_start": 286.02662131519276,
+      "origin_end": 296.02662131519276,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "train_horn",
+      "display_name": "train horn",
+      "original_path": "distractors/val/train_horn/fsd50k_332416.wav",
+      "origin_start": 6.289773242630385,
+      "origin_end": 10.20780045351474,
+      "mixture_start": 3.964398123130283,
+      "mixture_end": 7.882444027930986,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_2-117116-A-37.wav",
+      "origin_start": 2.630612244897959,
+      "origin_end": 4.868662131519274,
+      "mixture_start": 0.040719599788512556,
+      "mixture_end": 2.2787873806238736,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_159703.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6849886621315193,
+      "mixture_start": 7.657257782921083,
+      "mixture_end": 8.342246445052602,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove train horn and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove train horn and alarm clock and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and alarm clock and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn and keep alarm clock and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep train horn and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep train horn and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove train horn and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove train horn and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and gunshot and keep train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_255_rep2.json b/data/audio_mixtures_no_speech/train/train_3dist_255_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..0d304c16d66bde3add71ac860dfbfcfc4443ea9c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_255_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "train_3dist_255_rep2",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "baby_cry",
+    "gunshot"
+  ],
+  "audio_file": "train_3dist_255_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_142.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.0740589569160996,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_jyuDtN-Awqg_chunk_004.mp3",
+      "origin_start": 174.53052154195012,
+      "origin_end": 184.53052154195012,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_1-59324-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5340362811791384,
+      "mixture_start": 8.993200154914755,
+      "mixture_end": 9.527259111830855,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_211527_2.wav",
+      "origin_start": 9.315124716553289,
+      "origin_end": 11.674784580498866,
+      "mixture_start": 2.48081545941943,
+      "mixture_end": 4.84048668561965,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/val/gunshot/fsd50k_128297.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7198185941043084,
+      "mixture_start": 1.868155475072555,
+      "mixture_end": 2.5879740691768633,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and baby cry and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep sneeze and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and baby cry and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove sneeze and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and gunshot and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove baby cry and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_255_rep3.json b/data/audio_mixtures_no_speech/train/train_3dist_255_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..937fa662df0f05a098be492127cbf50e25ad813c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_255_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "train_3dist_255_rep3",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "baby_cry",
+    "gunshot"
+  ],
+  "audio_file": "train_3dist_255_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_386.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.733605442176871,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_013.mp3",
+      "origin_start": 65.53979591836735,
+      "origin_end": 75.53979591836735,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/val/sneeze/fsd50k_23752.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6733786848072563,
+      "mixture_start": 3.9124728293910995,
+      "mixture_end": 4.585851514198356,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_321712_2.wav",
+      "origin_start": 10.130975056689342,
+      "origin_end": 12.349977324263039,
+      "mixture_start": 4.376058618366047,
+      "mixture_end": 6.595067360972352,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_231245.wav",
+      "origin_start": 2.6592517006802723,
+      "origin_end": 6.330113378684807,
+      "mixture_start": 1.2150773751961648,
+      "mixture_end": 4.885941338994193,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and baby cry and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep sneeze and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and baby cry and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove sneeze and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and gunshot and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove baby cry and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_275_rep4.json b/data/audio_mixtures_no_speech/train/train_3dist_275_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..8d6f60d5f2d7e7348c1370292170f5097867278d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_275_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "train_3dist_275_rep4",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "baby_cry",
+    "glass_breaking"
+  ],
+  "audio_file": "train_3dist_275_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_087.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.352018140589569,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_016.mp3",
+      "origin_start": 262.9782766439909,
+      "origin_end": 272.9782766439909,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_2-130979-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7314285714285714,
+      "mixture_start": 6.555259213943424,
+      "mixture_end": 7.286687785371996,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_463879.wav",
+      "origin_start": 3.7393877551020407,
+      "origin_end": 6.848412698412698,
+      "mixture_start": 1.7395891417250302,
+      "mixture_end": 4.848621097081764,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_390720.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8243083900226758,
+      "mixture_start": 6.42204754119653,
+      "mixture_end": 7.246355931219206,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and baby cry and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and baby cry and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep baby cry and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep sneeze and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep sneeze and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and baby cry and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove sneeze and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and glass breaking and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_276_rep3.json b/data/audio_mixtures_no_speech/train/train_3dist_276_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..cec3f4bc77878564490623a3ea1d53e5d75ae8d9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_276_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "train_3dist_276_rep3",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "sneeze",
+    "slam"
+  ],
+  "audio_file": "train_3dist_276_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p261/p261_043.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.1834467120181404,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_001.mp3",
+      "origin_start": 257.150022675737,
+      "origin_end": 267.150022675737,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_256127.wav",
+      "origin_start": 4.128390022675737,
+      "origin_end": 7.601632653061224,
+      "mixture_start": 1.000450404866715,
+      "mixture_end": 4.473704831582296,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_368801.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9171882086167801,
+      "mixture_start": 3.6839029807194934,
+      "mixture_end": 4.601091189336273,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_395920.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.5673469387755101,
+      "mixture_start": 4.07843306157479,
+      "mixture_end": 5.6457800003503005,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and sneeze and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and sneeze and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove slam and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and slam and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep cellphone buzz vibrating alert and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and sneeze and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove cellphone buzz vibrating alert and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove cellphone buzz vibrating alert and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and slam and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_278_rep1.json b/data/audio_mixtures_no_speech/train/train_3dist_278_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..bdac37a8f8a24cae60547e8002e1b4beaa9aee20
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_278_rep1.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "train_3dist_278_rep1",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "train_horn",
+    "boom",
+    "fire_alarm"
+  ],
+  "audio_file": "train_3dist_278_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p245/p245_345.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.7989115646258504,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_002.mp3",
+      "origin_start": 3.8616326530612244,
+      "origin_end": 13.861632653061225,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "train_horn",
+      "display_name": "train horn",
+      "original_path": "distractors/val/train_horn/fsd50k_332416.wav",
+      "origin_start": 3.848095238095238,
+      "origin_end": 7.408662131519274,
+      "mixture_start": 5.75551863075707,
+      "mixture_end": 9.316101559121229,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_161343.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7430385487528345,
+      "mixture_start": 3.6309692760445054,
+      "mixture_end": 4.3740078247973395,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 1.2069160997732427,
+      "origin_end": 4.360975056689343,
+      "mixture_start": 1.7930274839464773,
+      "mixture_end": 4.947093445675998,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn and boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove train horn and boom and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and boom and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn",
+        "boom",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and fire alarm and remove train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and fire alarm and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and boom and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn and boom and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn and fire alarm and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove boom and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_292_rep2.json b/data/audio_mixtures_no_speech/train/train_3dist_292_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..c8af78b92b8b1f9dff13ef6853c394fc99462284
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_292_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "train_3dist_292_rep2",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "computer_typing",
+    "slam"
+  ],
+  "audio_file": "train_3dist_292_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p257/p257_282.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9629478458049887,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Train/asmr_Train_K92rkjZeTng_chunk_012.mp3",
+      "origin_start": 260.6913605442177,
+      "origin_end": 270.6913605442177,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_45575.wav",
+      "origin_start": 9.357755102040816,
+      "origin_end": 13.170816326530613,
+      "mixture_start": 4.954507709825812,
+      "mixture_end": 8.767588791351745,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/fsd50k_99795.wav",
+      "origin_start": 0.8071655328798186,
+      "origin_end": 3.590249433106576,
+      "mixture_start": 2.904531853979265,
+      "mixture_end": 5.6876272289314365,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_48980.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0332879818594105,
+      "mixture_start": 8.764282770857802,
+      "mixture_end": 9.797570752717213,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and computer typing and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "computer_typing",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and computer typing and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "computer_typing",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep computer typing and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep cough and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and computer typing and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove cough and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove cough and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing and slam and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/audio_mixtures_no_speech/train/train_3dist_293_rep1.json b/data/audio_mixtures_no_speech/train/train_3dist_293_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..062fab66f7a2243664d4c3c05e3769e50bac1a89
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_293_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "train_3dist_293_rep1",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "ringtone",
+    "footsteps"
+  ],
+  "audio_file": "train_3dist_293_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_072.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.5190702947845804,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_002.mp3",
+      "origin_start": 268.66378684807256,
+      "origin_end": 278.66378684807256,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_208761.wav",
+      "origin_start": 1.1885487528344671,
+      "origin_end": 4.450657596371882,
+      "mixture_start": 4.755572674187185,
+      "mixture_end": 8.017689927029075,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_360831.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.253877551020408,
+      "mixture_start": 0.9639749258608918,
+      "mixture_end": 2.2178524768813,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_166302.wav",
+      "origin_start": 1.6856009070294784,
+      "origin_end": 4.631088435374149,
+      "mixture_start": 2.097321989205796,
+      "mixture_end": 5.042827799335056,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and ringtone and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep ringtone and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and footsteps and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and ringtone and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove cough and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove ringtone and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file