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+      "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_031_rep3.json b/data/audio_mixtures_no_speech/train/airport_1dist_031_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..4e26089bd05d4c7fd62fa18e2f903438e5090f34
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_031_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "airport_1dist_031_rep3",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "dog"
+  ],
+  "audio_file": "airport_1dist_031_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_054.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9251927437641723,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_010.mp3",
+      "origin_start": 76.36419501133787,
+      "origin_end": 86.36419501133787,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_95532.wav",
+      "origin_start": 1.8599092970521542,
+      "origin_end": 5.172018140589569,
+      "mixture_start": 4.938052992661478,
+      "mixture_end": 8.250184039241956,
+      "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_1dist_032_rep3.json b/data/audio_mixtures_no_speech/train/airport_1dist_032_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..bf215c6278576253030ddf807acc08ce5fcd035c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_032_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "airport_1dist_032_rep3",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "boom"
+  ],
+  "audio_file": "airport_1dist_032_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p268/p268_183.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.9723809523809526,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_137oN5uUVyQ_chunk_004.mp3",
+      "origin_start": 85.39249433106576,
+      "origin_end": 95.39249433106576,
+      "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": 4.363061514743484,
+      "mixture_end": 6.162608000004255,
+      "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/airport_1dist_034_rep1.json b/data/audio_mixtures_no_speech/train/airport_1dist_034_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..74db8a6cfa537e783738cf3c32867b0988ac738c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_034_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "airport_1dist_034_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "fire_alarm"
+  ],
+  "audio_file": "airport_1dist_034_rep1.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/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_025.mp3",
+      "origin_start": 6.729818594104309,
+      "origin_end": 16.72981859410431,
+      "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": 2.850181405895692,
+      "origin_end": 6.100521541950114,
+      "mixture_start": 2.609330776980017,
+      "mixture_end": 5.859686670778695,
+      "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_040_rep4.json b/data/audio_mixtures_no_speech/train/airport_1dist_040_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..21053f952d54d8a001497e80b4fb3accaa95aefd
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_040_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "airport_1dist_040_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "sneeze"
+  ],
+  "audio_file": "airport_1dist_040_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p258/p258_258.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.1799546485260772,
+      "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": 8.704195011337868,
+      "origin_end": 18.70419501133787,
+      "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": 1.547477837628817,
+      "mixture_end": 2.8361853206220142,
+      "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_054_rep4.json b/data/audio_mixtures_no_speech/train/airport_1dist_054_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..be362613e14b5d487ad15731fc22ddc0b395aac1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_054_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "airport_1dist_054_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "drill"
+  ],
+  "audio_file": "airport_1dist_054_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_355.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.381156462585034,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_018.mp3",
+      "origin_start": 53.23907029478458,
+      "origin_end": 63.23907029478458,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/val/drill/fsd50k_71905.wav",
+      "origin_start": 22.469750566893424,
+      "origin_end": 25.06394557823129,
+      "mixture_start": 1.204598381725885,
+      "mixture_end": 3.7987992144322447,
+      "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/airport_1dist_062_rep2.json b/data/audio_mixtures_no_speech/train/airport_1dist_062_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..e3c78ca402bdce4eb481edbcbd48a63c9fc691bc
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_062_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "airport_1dist_062_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "airport_1dist_062_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_222.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.159365079365079,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Airport/asmr_Airport_ILBDMisz5K8_chunk_003.mp3",
+      "origin_start": 232.7146485260771,
+      "origin_end": 242.7146485260771,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_387336.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7662585034013606,
+      "mixture_start": 7.721210460897469,
+      "mixture_end": 8.487468964298829,
+      "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/airport_1dist_063_rep4.json b/data/audio_mixtures_no_speech/train/airport_1dist_063_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..bd2537405737fec2b1b7630ed863da7a7c4f517e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_063_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "airport_1dist_063_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "fire_alarm"
+  ],
+  "audio_file": "airport_1dist_063_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p245/p245_302.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.7314285714285713,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_137oN5uUVyQ_chunk_002.mp3",
+      "origin_start": 273.7053514739229,
+      "origin_end": 283.7053514739229,
+      "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": 3.7870068027210886,
+      "origin_end": 7.5666213151927435,
+      "mixture_start": 3.3926933104753827,
+      "mixture_end": 7.172310909333591,
+      "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_071_rep3.json b/data/audio_mixtures_no_speech/train/airport_1dist_071_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..403828ea9551383ff8b63ebff2ab19557d81c3f0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_071_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "airport_1dist_071_rep3",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "footsteps"
+  ],
+  "audio_file": "airport_1dist_071_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_382.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.0332426303854874,
+      "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": 88.97396825396825,
+      "origin_end": 98.97396825396825,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_371017.wav",
+      "origin_start": 0.0892517006802721,
+      "origin_end": 3.413265306122449,
+      "mixture_start": 3.220335422009369,
+      "mixture_end": 6.544362686540607,
+      "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/airport_1dist_080_rep3.json b/data/audio_mixtures_no_speech/train/airport_1dist_080_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..9a860f1153fc10bdde126747034ad15f90dbab9f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_080_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "airport_1dist_080_rep3",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "cough"
+  ],
+  "audio_file": "airport_1dist_080_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p241/p241_334.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.074512471655329,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_012.mp3",
+      "origin_start": 280.82448979591834,
+      "origin_end": 290.82448979591834,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_365158.wav",
+      "origin_start": 0.9379818594104309,
+      "origin_end": 3.8072789115646257,
+      "mixture_start": 0.45378768806028974,
+      "mixture_end": 3.3231039564864484,
+      "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_083_rep2.json b/data/audio_mixtures_no_speech/train/airport_1dist_083_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..5a5f512e473597979149110be92287e7661cc155
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_083_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "airport_1dist_083_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "fire_alarm"
+  ],
+  "audio_file": "airport_1dist_083_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_155.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0065532879818595,
+      "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": 179.46156462585034,
+      "origin_end": 189.46156462585034,
+      "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": 1.0481859410430838,
+      "origin_end": 3.2709750566893425,
+      "mixture_start": 0.4786248545015315,
+      "mixture_end": 2.7014244579429194,
+      "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_083_rep4.json b/data/audio_mixtures_no_speech/train/airport_1dist_083_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..3d9d461c8ca5ebb9d8cef78c4be62c77dada6fae
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_083_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "airport_1dist_083_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "fire_alarm"
+  ],
+  "audio_file": "airport_1dist_083_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_345.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.34734693877551,
+      "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": 222.01761904761904,
+      "origin_end": 232.01761904761904,
+      "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": 3.9614965986394557,
+      "origin_end": 7.533106575963719,
+      "mixture_start": 1.6788263389400973,
+      "mixture_end": 5.250445310430241,
+      "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_084_rep2.json b/data/audio_mixtures_no_speech/train/airport_1dist_084_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..eb9b363ef91c2914ae195378437123008138dacf
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_084_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "airport_1dist_084_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "footsteps"
+  ],
+  "audio_file": "airport_1dist_084_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_421.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.5651020408163263,
+      "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": 51.97108843537415,
+      "origin_end": 61.97108843537415,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/val/footsteps/esc-50_4-117630-A-25.wav",
+      "origin_start": 1.0929478458049886,
+      "origin_end": 4.512721088435375,
+      "mixture_start": 6.33260325132269,
+      "mixture_end": 9.752383546320878,
+      "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/airport_1dist_098_rep4.json b/data/audio_mixtures_no_speech/train/airport_1dist_098_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..6705f8d4b0b92948d52d38ec39e8388067fa1b41
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_1dist_098_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "airport_1dist_098_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 1,
+  "distractors": [
+    "dog"
+  ],
+  "audio_file": "airport_1dist_098_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p270/p270_256.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.820294784580499,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_004.mp3",
+      "origin_start": 127.28024943310658,
+      "origin_end": 137.28024943310658,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_137803.wav",
+      "origin_start": 3.159750566893424,
+      "origin_end": 6.526530612244898,
+      "mixture_start": 1.9245149272772726,
+      "mixture_end": 5.291312000148386,
+      "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_106_rep1.json b/data/audio_mixtures_no_speech/train/airport_2dist_106_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..57e454eba9ae08eb13ea62ab57b4ee98ca5c8a30
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_106_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "airport_2dist_106_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "glass_breaking"
+  ],
+  "audio_file": "airport_2dist_106_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_280.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.3744897959183673,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_ILBDMisz5K8_chunk_004.mp3",
+      "origin_start": 278.94181405895694,
+      "origin_end": 288.94181405895694,
+      "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_238390.wav",
+      "origin_start": 0.47532879818594104,
+      "origin_end": 3.5289569160997734,
+      "mixture_start": 2.085618559758936,
+      "mixture_end": 5.139267666045752,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_216291.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5572789115646258,
+      "mixture_start": 3.3435439102996405,
+      "mixture_end": 3.900822821864266,
+      "channel": 3
+    }
+  },
+  "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 alarm clock and glass breaking",
+      "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 alarm clock and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking 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_2dist_106_rep4.json b/data/audio_mixtures_no_speech/train/airport_2dist_106_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..f3d9a14b2f35ccf36404dead9e3f399bbdf93af2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_106_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "airport_2dist_106_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "glass_breaking"
+  ],
+  "audio_file": "airport_2dist_106_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_080.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.69,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_018.mp3",
+      "origin_start": 81.66104308390022,
+      "origin_end": 91.66104308390022,
+      "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_1-67033-A-37.wav",
+      "origin_start": 0.649297052154195,
+      "origin_end": 4.105328798185941,
+      "mixture_start": 6.482550317629041,
+      "mixture_end": 9.938589427228965,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/val/glass_breaking/fsd50k_173580.wav",
+      "origin_start": 0.008321995464852608,
+      "origin_end": 2.7443083900226757,
+      "mixture_start": 3.9207898607767757,
+      "mixture_end": 6.656778949571406,
+      "channel": 3
+    }
+  },
+  "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 alarm clock and glass breaking",
+      "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 alarm clock and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking 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_2dist_130_rep1.json b/data/audio_mixtures_no_speech/train/airport_2dist_130_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..e6eb9fad28939fc84b0dbc6c0efee18176ba399f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_130_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "airport_2dist_130_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "ringtone",
+    "hammer"
+  ],
+  "audio_file": "airport_2dist_130_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_170.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.7342857142857144,
+      "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": 76.52609977324263,
+      "origin_end": 86.52609977324263,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_117568.wav",
+      "origin_start": 3.0796825396825396,
+      "origin_end": 5.08734693877551,
+      "mixture_start": 5.295158894459834,
+      "mixture_end": 7.302826997778044,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_146257.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6849886621315193,
+      "mixture_start": 3.7773917134780466,
+      "mixture_end": 4.462380375609566,
+      "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 hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and hammer",
+      "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 hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove hammer",
+      "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_180_rep1.json b/data/audio_mixtures_no_speech/train/airport_2dist_180_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..8c90b54d4c40c6efe663ecdb59c29f232d2b7886
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_180_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "airport_2dist_180_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "drill",
+    "boom"
+  ],
+  "audio_file": "airport_2dist_180_rep1.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/Airport/asmr_Airport_vTX-Nhs-kUo_chunk_002.mp3",
+      "origin_start": 114.65968253968254,
+      "origin_end": 124.65968253968254,
+      "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": 7.622692381546017,
+      "mixture_end": 8.372692381546017,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_323316.wav",
+      "origin_start": 0.5441043083900227,
+      "origin_end": 2.557482993197279,
+      "mixture_start": 1.859029632527072,
+      "mixture_end": 3.872425303929665,
+      "channel": 3
+    }
+  },
+  "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 drill and boom",
+      "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 drill and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and remove boom",
+      "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_2dist_198_rep4.json b/data/audio_mixtures_no_speech/train/airport_2dist_198_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..5c3715595ec7c51b21d41c236bb603e164a7a59f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_2dist_198_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "airport_2dist_198_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 2,
+  "distractors": [
+    "computer_typing",
+    "siren"
+  ],
+  "audio_file": "airport_2dist_198_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_377.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.3740362811791385,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_137oN5uUVyQ_chunk_000.mp3",
+      "origin_start": 140.82938775510203,
+      "origin_end": 150.82938775510203,
+      "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_379100.wav",
+      "origin_start": 0.2534920634920635,
+      "origin_end": 2.8738321995464853,
+      "mixture_start": 3.628635058598315,
+      "mixture_end": 6.248983629716823,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_67358.wav",
+      "origin_start": 0.6315419501133787,
+      "origin_end": 2.7324489795918367,
+      "mixture_start": 5.763684420036231,
+      "mixture_end": 7.864598522442623,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing",
+      "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 computer typing and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove siren",
+      "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/airport_3dist_206_rep1.json b/data/audio_mixtures_no_speech/train/airport_3dist_206_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..00ca05930c732412882624bee94867136ec15f25
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_206_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_206_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "drill",
+    "baby_cry"
+  ],
+  "audio_file": "airport_3dist_206_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_297.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.567732426303855,
+      "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": 75.77979591836734,
+      "origin_end": 85.77979591836734,
+      "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_223505.wav",
+      "origin_start": 6.285510204081633,
+      "origin_end": 9.679410430839003,
+      "mixture_start": 5.486038295205836,
+      "mixture_end": 8.879940528723695,
+      "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": 0.40122496749341174,
+      "mixture_end": 1.5506127225954525,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_167078.wav",
+      "origin_start": 6.8513151927437645,
+      "origin_end": 10.075532879818594,
+      "mixture_start": 1.1307224199807293,
+      "mixture_end": 4.354957652599259,
+      "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_215_rep4.json b/data/audio_mixtures_no_speech/train/airport_3dist_215_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..7e5f85a8a9362886618f1bf167c55e1e7eb8e401
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_215_rep4.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "airport_3dist_215_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "baby_cry",
+    "dog"
+  ],
+  "audio_file": "airport_3dist_215_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_302.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.399365079365079,
+      "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": 213.63038548752834,
+      "origin_end": 223.63038548752834,
+      "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": 6.583262255693513,
+      "mixture_end": 7.25664094050077,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_398548.wav",
+      "origin_start": 10.293809523809523,
+      "origin_end": 12.884489795918368,
+      "mixture_start": 3.1397550459231844,
+      "mixture_end": 5.730446446045952,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_54823.wav",
+      "origin_start": 6.750453514739229,
+      "origin_end": 8.909297052154194,
+      "mixture_start": 5.6760720048008215,
+      "mixture_end": 7.834920174729689,
+      "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 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 sneeze and baby cry",
+      "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 baby cry and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and baby cry 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 baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and baby cry and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry 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"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove dog and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep sneeze and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and baby cry and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and baby cry and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove sneeze and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove baby cry 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_216_rep1.json b/data/audio_mixtures_no_speech/train/airport_3dist_216_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..554222a62bc3b15abe24e00ec89bb78521965275
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_216_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "airport_3dist_216_rep1",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "baby_cry",
+    "dog"
+  ],
+  "audio_file": "airport_3dist_216_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p261/p261_012.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.8074149659863945,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_137oN5uUVyQ_chunk_000.mp3",
+      "origin_start": 144.97839002267574,
+      "origin_end": 154.97839002267574,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_19120.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1485714285714286,
+      "mixture_start": 3.6881902733230048,
+      "mixture_end": 4.836761701894433,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/esc-50_1-22694-B-20.wav",
+      "origin_start": 1.2345804988662132,
+      "origin_end": 3.2895464852607708,
+      "mixture_start": 4.191372075004924,
+      "mixture_end": 6.2463455050905425,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/val/dog/fsd50k_387688.wav",
+      "origin_start": 0.012222222222222223,
+      "origin_end": 2.082312925170068,
+      "mixture_start": 2.324077057797111,
+      "mixture_end": 4.3941792365685615,
+      "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 dog",
+      "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 dog",
+      "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 cough and baby cry and dog",
+      "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 dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "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 dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry",
+        "dog"
+      ],
+      "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": "remove cough and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "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 dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove dog and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep cough and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove cough and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cough and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and dog 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_232_rep2.json b/data/audio_mixtures_no_speech/train/airport_3dist_232_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..71dfefc9c08fd03ba5ca6227cbed0215bce2386d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_232_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "airport_3dist_232_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "footsteps",
+    "hammer"
+  ],
+  "audio_file": "airport_3dist_232_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_173.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8008390022675735,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Airport/asmr_Airport_ILBDMisz5K8_chunk_000.mp3",
+      "origin_start": 250.53104308390022,
+      "origin_end": 260.5310430839002,
+      "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": 9.526371882086167,
+      "origin_end": 12.771836734693878,
+      "mixture_start": 0.7832948964235469,
+      "mixture_end": 4.028764523624742,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/val/footsteps/fsd50k_87518.wav",
+      "origin_start": 1.15578231292517,
+      "origin_end": 3.783174603174603,
+      "mixture_start": 4.7981691294374915,
+      "mixture_end": 7.425561935055556,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_68695.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9520181405895691,
+      "mixture_start": 0.5450746713514681,
+      "mixture_end": 1.4970928119410374,
+      "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 footsteps",
+      "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 footsteps",
+      "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": "remove footsteps and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and footsteps 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 footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and footsteps and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "footsteps",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and hammer and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and hammer and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep baby cry and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and footsteps and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and hammer and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps 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/airport_3dist_243_rep4.json b/data/audio_mixtures_no_speech/train/airport_3dist_243_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..596663535978883f5a207459e1f92c306f070a9e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_243_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "airport_3dist_243_rep4",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "fire_alarm",
+    "gunshot"
+  ],
+  "audio_file": "airport_3dist_243_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_333.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.480453514739229,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Airport/asmr_Airport_ILBDMisz5K8_chunk_015.mp3",
+      "origin_start": 40.34047619047619,
+      "origin_end": 50.34047619047619,
+      "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": 2.1470873868523883,
+      "mixture_end": 2.8785159582809596,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/val/fire_alarm/fsd50k_270643.wav",
+      "origin_start": 2.3519501133786846,
+      "origin_end": 5.579319727891156,
+      "mixture_start": 2.2499400210322684,
+      "mixture_end": 5.477311994833903,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_369782.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.4396371882086167,
+      "mixture_start": 6.6927252396256325,
+      "mixture_end": 8.132362427834249,
+      "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_275_rep2.json b/data/audio_mixtures_no_speech/train/airport_3dist_275_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..22cfa34c1b96bfbbcd31d28e5533c8bc9a2661cc
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/airport_3dist_275_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "airport_3dist_275_rep2",
+  "scene_name": "Airport",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "dog",
+    "siren"
+  ],
+  "audio_file": "airport_3dist_275_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_335.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.306349206349206,
+      "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": 63.70678004535147,
+      "origin_end": 73.70678004535148,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/fsd50k_254466.wav",
+      "origin_start": 1.8448299319727892,
+      "origin_end": 4.101292517006803,
+      "mixture_start": 4.5494311375544365,
+      "mixture_end": 6.8059066896602065,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_351876.wav",
+      "origin_start": 0.020997732426303855,
+      "origin_end": 3.286031746031746,
+      "mixture_start": 0.9504400371143236,
+      "mixture_end": 4.215485258113287,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-70052-B-42.wav",
+      "origin_start": 0.4471428571428571,
+      "origin_end": 2.4508843537414964,
+      "mixture_start": 6.620989553595986,
+      "mixture_end": 8.624743621064619,
+      "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 dog",
+      "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 dog",
+      "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 dog and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and dog 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 dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "dog",
+        "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 dog and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and dog and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and siren and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and siren and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep cough and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove cough and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and siren and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog 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/beach_1dist_001_rep3.json b/data/audio_mixtures_no_speech/train/beach_1dist_001_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..31afa8224599bbd94fb669c7c37bc601a97547ad
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_001_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "beach_1dist_001_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "beach_1dist_001_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p229/p229_085.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.733628117913832,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_046.mp3",
+      "origin_start": 245.2128798185941,
+      "origin_end": 255.2128798185941,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_319008.wav",
+      "origin_start": 1.0229478458049888,
+      "origin_end": 4.428571428571429,
+      "mixture_start": 5.55467232508189,
+      "mixture_end": 8.960298258367413,
+      "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_011_rep1.json b/data/audio_mixtures_no_speech/train/beach_1dist_011_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..28e259fff02175409840a7c047fac6e53152edfe
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_011_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_011_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "cricket"
+  ],
+  "audio_file": "beach_1dist_011_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_378.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3469387755102042,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_urVW36rIHYM_chunk_020.mp3",
+      "origin_start": 223.03408163265306,
+      "origin_end": 233.03408163265306,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_89354.wav",
+      "origin_start": 1.8640589569160997,
+      "origin_end": 3.888095238095238,
+      "mixture_start": 3.7843685249539396,
+      "mixture_end": 5.80842157033174,
+      "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_021_rep2.json b/data/audio_mixtures_no_speech/train/beach_1dist_021_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..57996ef29b66825b0521633d93741ff8b031c8fa
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_021_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "beach_1dist_021_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "beach_1dist_021_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p243/p243_269.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.460952380952381,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_urVW36rIHYM_chunk_008.mp3",
+      "origin_start": 171.99537414965985,
+      "origin_end": 181.99537414965985,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_257876.wav",
+      "origin_start": 0.4576643990929705,
+      "origin_end": 4.100997732426304,
+      "mixture_start": 3.7054138340120475,
+      "mixture_end": 7.348762752015164,
+      "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_033_rep3.json b/data/audio_mixtures_no_speech/train/beach_1dist_033_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..4659a30d0a9226b8329765099baa115f120f0dc2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_033_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "beach_1dist_033_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "boom"
+  ],
+  "audio_file": "beach_1dist_033_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_297.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.099478458049886,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_089.mp3",
+      "origin_start": 44.317301587301586,
+      "origin_end": 54.317301587301586,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_435415.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.4280272108843537,
+      "mixture_start": 5.633978431228461,
+      "mixture_end": 7.062005642112815,
+      "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/beach_1dist_035_rep3.json b/data/audio_mixtures_no_speech/train/beach_1dist_035_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..2bb404f049f070b80189ae7f2e1ba8e45dd7f4d5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_035_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_035_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "cricket"
+  ],
+  "audio_file": "beach_1dist_035_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_493.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8626984126984127,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_108.mp3",
+      "origin_start": 284.61179138321995,
+      "origin_end": 294.61179138321995,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_100886.wav",
+      "origin_start": 3.4670521541950112,
+      "origin_end": 5.965895691609977,
+      "mixture_start": 4.843522281177036,
+      "mixture_end": 7.342385947270915,
+      "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_042_rep3.json b/data/audio_mixtures_no_speech/train/beach_1dist_042_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..1eebcdffd3dca8499bd32656bb489d426188406f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_042_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "beach_1dist_042_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "beach_1dist_042_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p234/p234_237.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.5421995464852607,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_089.mp3",
+      "origin_start": 275.11333333333334,
+      "origin_end": 285.11333333333334,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_273540.wav",
+      "origin_start": 1.6873469387755102,
+      "origin_end": 5.58124716553288,
+      "mixture_start": 5.52124007602595,
+      "mixture_end": 9.415149378777086,
+      "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_055_rep2.json b/data/audio_mixtures_no_speech/train/beach_1dist_055_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..d9e24f22593b0bc9093762a02e8e998826c1c7b0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_055_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "beach_1dist_055_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "beach_1dist_055_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p261/p261_390.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9468480725623585,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_Nep1qytq9JM_chunk_116.mp3",
+      "origin_start": 142.5621768707483,
+      "origin_end": 152.5621768707483,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167550.wav",
+      "origin_start": 2.9142176870748298,
+      "origin_end": 6.393673469387755,
+      "mixture_start": 0.8432713310093357,
+      "mixture_end": 4.322732658640101,
+      "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_058_rep3.json b/data/audio_mixtures_no_speech/train/beach_1dist_058_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..a9738932f2a37be72cca46743edbc8771c1d342a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_058_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_058_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "engine"
+  ],
+  "audio_file": "beach_1dist_058_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_364.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.051768707482993,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_065.mp3",
+      "origin_start": 162.54857142857142,
+      "origin_end": 172.54857142857142,
+      "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": 1.6187528344671203,
+      "origin_end": 4.388956916099773,
+      "mixture_start": 3.775674174184317,
+      "mixture_end": 6.545897953659225,
+      "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_062_rep3.json b/data/audio_mixtures_no_speech/train/beach_1dist_062_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..53a323f4047087fc06d388b2afb3cb4204d92465
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_062_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "beach_1dist_062_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "beach_1dist_062_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p280/p280_117.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.4781859410430838,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_087.mp3",
+      "origin_start": 119.85612244897959,
+      "origin_end": 129.8561224489796,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_34733.wav",
+      "origin_start": 2.430090702947846,
+      "origin_end": 5.220453514739229,
+      "mixture_start": 6.174728094105025,
+      "mixture_end": 8.965091457275095,
+      "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_rep4.json b/data/audio_mixtures_no_speech/train/beach_1dist_065_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..26ed708625035e20e6e288d7bc0e2b57d6c393c0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_065_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_065_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "helicopter"
+  ],
+  "audio_file": "beach_1dist_065_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_344.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.3312925170068026,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_Nep1qytq9JM_chunk_062.mp3",
+      "origin_start": 98.49111111111111,
+      "origin_end": 108.49111111111111,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/val/helicopter/esc-50_4-175000-C-40.wav",
+      "origin_start": 0.6431065759637188,
+      "origin_end": 4.025192743764173,
+      "mixture_start": 3.9142566951379645,
+      "mixture_end": 7.296353684656371,
+      "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_071_rep1.json b/data/audio_mixtures_no_speech/train/beach_1dist_071_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..7a09607a6dcd8bbbbfc137905c4e5dd7f944a3a6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_071_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_071_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "birds_chirping"
+  ],
+  "audio_file": "beach_1dist_071_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_252.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.820589569160998,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_urVW36rIHYM_chunk_005.mp3",
+      "origin_start": 162.14437641723356,
+      "origin_end": 172.14437641723356,
+      "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_2-72547-C-14.wav",
+      "origin_start": 1.162108843537415,
+      "origin_end": 4.80671201814059,
+      "mixture_start": 4.6558733085908015,
+      "mixture_end": 8.300491806666965,
+      "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_074_rep4.json b/data/audio_mixtures_no_speech/train/beach_1dist_074_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..9e6f45ef2b30311986c267f6d1192d0b9509dd48
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_074_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "beach_1dist_074_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "car_alarm"
+  ],
+  "audio_file": "beach_1dist_074_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_335.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6076643990929704,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_105.mp3",
+      "origin_start": 2.5179818594104306,
+      "origin_end": 12.517981859410432,
+      "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": 0.10426303854875284,
+      "origin_end": 2.624013605442177,
+      "mixture_start": 3.9988844094537948,
+      "mixture_end": 6.518653124040207,
+      "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/beach_1dist_084_rep4.json b/data/audio_mixtures_no_speech/train/beach_1dist_084_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..2b258b33e9bccf920eedd31825579173aad4c97f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_084_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_084_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "cough"
+  ],
+  "audio_file": "beach_1dist_084_rep4.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/Beach/asmr_Beach_urVW36rIHYM_chunk_014.mp3",
+      "origin_start": 86.62061224489796,
+      "origin_end": 96.62061224489796,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_17167.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5804988662131519,
+      "mixture_start": 1.0786195210081146,
+      "mixture_end": 1.6591183872212665,
+      "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/beach_1dist_094_rep2.json b/data/audio_mixtures_no_speech/train/beach_1dist_094_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..b059e8eebd517f1c66b1ff5ec8d38794441891b2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_1dist_094_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "beach_1dist_094_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 1,
+  "distractors": [
+    "car_horn"
+  ],
+  "audio_file": "beach_1dist_094_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p270/p270_085.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.7987301587301587,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_urVW36rIHYM_chunk_006.mp3",
+      "origin_start": 117.55027210884354,
+      "origin_end": 127.55027210884354,
+      "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_254907.wav",
+      "origin_start": 0.2302267573696145,
+      "origin_end": 2.7812698412698413,
+      "mixture_start": 1.5073073735891436,
+      "mixture_end": 4.058368822155017,
+      "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/beach_2dist_104_rep3.json b/data/audio_mixtures_no_speech/train/beach_2dist_104_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..79b770c4f334090f7a7b0ed2fde2f5581268785f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_104_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "beach_2dist_104_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "birds_chirping"
+  ],
+  "audio_file": "beach_2dist_104_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_401.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8800453514739228,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_064.mp3",
+      "origin_start": 101.38455782312926,
+      "origin_end": 111.38455782312926,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_132601.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8010884353741496,
+      "mixture_start": 4.306641162894164,
+      "mixture_end": 5.107729598268314,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_74825.wav",
+      "origin_start": 3.7606575963718822,
+      "origin_end": 7.600884353741496,
+      "mixture_start": 2.9797135397819456,
+      "mixture_end": 6.819948407976523,
+      "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 birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and birds chirping",
+      "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 birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove birds chirping",
+      "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_2dist_104_rep4.json b/data/audio_mixtures_no_speech/train/beach_2dist_104_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..4bf65de82a9a9e542fc8a96f0e91d24d8077b44a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_104_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "beach_2dist_104_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "birds_chirping"
+  ],
+  "audio_file": "beach_2dist_104_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p229/p229_151.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8823356009070296,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_014.mp3",
+      "origin_start": 240.70374149659864,
+      "origin_end": 250.70374149659864,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_87794.wav",
+      "origin_start": 0.5084126984126984,
+      "origin_end": 2.5702721088435374,
+      "mixture_start": 7.778535906896214,
+      "mixture_end": 9.840397730398893,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_47606.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.533015873015873,
+      "mixture_start": 7.328326769212509,
+      "mixture_end": 7.861342642228382,
+      "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 birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and birds chirping",
+      "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 birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove birds chirping",
+      "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_2dist_105_rep3.json b/data/audio_mixtures_no_speech/train/beach_2dist_105_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..0b29424df045988c57375bbb11106a8f4e020bbc
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_105_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "beach_2dist_105_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "cricket",
+    "gunshot"
+  ],
+  "audio_file": "beach_2dist_105_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_128.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.4783219954648525,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_024.mp3",
+      "origin_start": 257.0224263038549,
+      "origin_end": 267.0224263038549,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_195617.wav",
+      "origin_start": 4.81437641723356,
+      "origin_end": 8.41140589569161,
+      "mixture_start": 5.235450997200974,
+      "mixture_end": 8.832497194570283,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_371548.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7546485260770975,
+      "mixture_start": 0.16360194887325025,
+      "mixture_end": 0.9182504749503477,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cricket",
+      "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 cricket 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,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove gunshot",
+      "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_2dist_108_rep3.json b/data/audio_mixtures_no_speech/train/beach_2dist_108_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..ea60900aa7d4378eb4f07ec03e229e7dd86577a4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_108_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "beach_2dist_108_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "alarm_clock"
+  ],
+  "audio_file": "beach_2dist_108_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p285/p285_315.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0511791383219955,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_047.mp3",
+      "origin_start": 240.8683446712018,
+      "origin_end": 250.8683446712018,
+      "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": 7.870896102020525,
+      "mixture_end": 8.497834877530728,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_3-148297-A-37.wav",
+      "origin_start": 1.3813832199546485,
+      "origin_end": 3.809909297052154,
+      "mixture_start": 2.173559598821362,
+      "mixture_end": 4.602086269956908,
+      "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 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"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "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": "keep alarm clock and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock 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/beach_2dist_111_rep3.json b/data/audio_mixtures_no_speech/train/beach_2dist_111_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..c965679754eb76987b29449361a768c736238ed7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_111_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "beach_2dist_111_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "boom",
+    "car_horn"
+  ],
+  "audio_file": "beach_2dist_111_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p267/p267_293.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.18015873015873,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_052.mp3",
+      "origin_start": 217.45827664399093,
+      "origin_end": 227.45827664399093,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_259300.wav",
+      "origin_start": 0.26884353741496597,
+      "origin_end": 4.054421768707483,
+      "mixture_start": 6.13371029228271,
+      "mixture_end": 9.919303919338486,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/esc-50_3-146697-A-43.wav",
+      "origin_start": 1.6618140589569161,
+      "origin_end": 3.9175736961451246,
+      "mixture_start": 4.362929422304695,
+      "mixture_end": 6.618695080146421,
+      "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_113_rep4.json b/data/audio_mixtures_no_speech/train/beach_2dist_113_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..e23997c0ac44a145a992567d761cf8f94ea38040
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_113_rep4.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "beach_2dist_113_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "beach_2dist_113_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p258/p258_085.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.5226303854875285,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_urVW36rIHYM_chunk_023.mp3",
+      "origin_start": 197.10580498866213,
+      "origin_end": 207.10580498866213,
+      "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": 3.6361303560329876,
+      "mixture_end": 4.572751671225731,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cellphone_buzz_vibrating_alert",
+      "display_name": "cellphone buzz vibrating alert",
+      "original_path": "distractors/train/cellphone_buzz_vibrating_alert/fsd50k_369839.wav",
+      "origin_start": 2.9734467120181405,
+      "origin_end": 5.021587301587301,
+      "mixture_start": 5.082042690304327,
+      "mixture_end": 7.130189905373457,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "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": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and cellphone buzz vibrating alert",
+      "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"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert 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/beach_2dist_121_rep3.json b/data/audio_mixtures_no_speech/train/beach_2dist_121_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..97658cf8d129290bae5af0c7009e96b6fe93713f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_121_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "beach_2dist_121_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "helicopter",
+    "dog"
+  ],
+  "audio_file": "beach_2dist_121_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_218.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.22530612244898,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_nta1YhicoGw_chunk_003.mp3",
+      "origin_start": 176.01895691609977,
+      "origin_end": 186.01895691609977,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_3-68630-A-40.wav",
+      "origin_start": 1.5270521541950113,
+      "origin_end": 4.877755102040816,
+      "mixture_start": 2.0673790340839844,
+      "mixture_end": 5.418101437101391,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_342250.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.2770975056689342,
+      "mixture_start": 5.795719922055211,
+      "mixture_end": 7.072817427724145,
+      "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 dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and dog",
+      "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 dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog 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_2dist_136_rep4.json b/data/audio_mixtures_no_speech/train/beach_2dist_136_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..327deee6935ed431ba848b48fc2d30cacea5ba84
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_136_rep4.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "beach_2dist_136_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "boom",
+    "gunshot"
+  ],
+  "audio_file": "beach_2dist_136_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_089.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.9298185941043084,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_Nep1qytq9JM_chunk_116.mp3",
+      "origin_start": 104.52820861678005,
+      "origin_end": 114.52820861678005,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_434426.wav",
+      "origin_start": 0.09476190476190476,
+      "origin_end": 2.0993650793650795,
+      "mixture_start": 1.5355332370454675,
+      "mixture_end": 3.5401560633738143,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_156904.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0565079365079366,
+      "mixture_start": 7.328738669338835,
+      "mixture_end": 8.385246605846772,
+      "channel": 3
+    }
+  },
+  "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 boom and gunshot",
+      "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 boom and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove gunshot",
+      "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_145_rep1.json b/data/audio_mixtures_no_speech/train/beach_2dist_145_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..b88a9b07dad39deb59ac743f981f051fb2ae8f34
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_145_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "beach_2dist_145_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "dog",
+    "gunshot"
+  ],
+  "audio_file": "beach_2dist_145_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p266/p266_022.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.529251700680272,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_nta1YhicoGw_chunk_007.mp3",
+      "origin_start": 40.97145124716553,
+      "origin_end": 50.97145124716553,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/val/dog/esc-50_4-184575-A-0.wav",
+      "origin_start": 1.7390702947845804,
+      "origin_end": 4.590634920634921,
+      "mixture_start": 1.9217671330082755,
+      "mixture_end": 4.773349955163573,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_238244.wav",
+      "origin_start": 0.10591836734693877,
+      "origin_end": 2.2485034013605443,
+      "mixture_start": 0.16846531048519342,
+      "mixture_end": 2.311057797443794,
+      "channel": 3
+    }
+  },
+  "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 dog and gunshot",
+      "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 dog and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot 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_2dist_153_rep2.json b/data/audio_mixtures_no_speech/train/beach_2dist_153_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..046c6d87eedb7d6c7e936f75dbc843167e05577d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_153_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "beach_2dist_153_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "baby_cry"
+  ],
+  "audio_file": "beach_2dist_153_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_384.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.695510204081633,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_nta1YhicoGw_chunk_010.mp3",
+      "origin_start": 264.58916099773245,
+      "origin_end": 274.58916099773245,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/fsd50k_82717.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9712244897959184,
+      "mixture_start": 4.503199372548956,
+      "mixture_end": 6.474423862344874,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_198411_11.wav",
+      "origin_start": 4.895714285714286,
+      "origin_end": 8.411632653061224,
+      "mixture_start": 0.32591768629040824,
+      "mixture_end": 3.8418533377491837,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "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 cough 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,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry 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_2dist_153_rep3.json b/data/audio_mixtures_no_speech/train/beach_2dist_153_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..2b854e6516d708dcbe3941ec4ba3b3c6fc3d9aa0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_153_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "beach_2dist_153_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "baby_cry"
+  ],
+  "audio_file": "beach_2dist_153_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_126.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.886122448979592,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_nta1YhicoGw_chunk_012.mp3",
+      "origin_start": 0.0,
+      "origin_end": 3.276984126984127,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/esc-50_2-98676-A-24.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.207437641723356,
+      "mixture_start": 6.671002868923398,
+      "mixture_end": 7.878440510646754,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_33672.wav",
+      "origin_start": 1.3622902494331066,
+      "origin_end": 4.842335600907029,
+      "mixture_start": 0.776009129800908,
+      "mixture_end": 4.256056528582018,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "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 cough 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,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry 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_2dist_160_rep1.json b/data/audio_mixtures_no_speech/train/beach_2dist_160_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..bdd2f747f8566b36a930210d90b871baa940348e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_160_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "beach_2dist_160_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "engine"
+  ],
+  "audio_file": "beach_2dist_160_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p225/p225_223.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9468480725623585,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_063.mp3",
+      "origin_start": 289.72263038548755,
+      "origin_end": 299.72263038548755,
+      "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": 0.24600907029478458,
+      "origin_end": 2.484489795918367,
+      "mixture_start": 1.1787001348838815,
+      "mixture_end": 3.4171923878012023,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/val/engine/fsd50k_237170.wav",
+      "origin_start": 2.6790702947845806,
+      "origin_end": 5.846235827664399,
+      "mixture_start": 6.458833062407099,
+      "mixture_end": 9.626005105962141,
+      "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": "remove car alarm and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove engine",
+      "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_173_rep1.json b/data/audio_mixtures_no_speech/train/beach_2dist_173_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..37dd6964614f66a12c902c2238da2f5f8f15c317
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_173_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "beach_2dist_173_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "fireworks",
+    "ringtone"
+  ],
+  "audio_file": "beach_2dist_173_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_153.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.5177551020408164,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_Nep1qytq9JM_chunk_097.mp3",
+      "origin_start": 199.82108843537415,
+      "origin_end": 209.82108843537415,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/val/fireworks/fsd50k_18815.wav",
+      "origin_start": 7.691156462585034,
+      "origin_end": 9.827551020408164,
+      "mixture_start": 0.03915346101265735,
+      "mixture_end": 2.1755550308868017,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_352667.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.905578231292517,
+      "mixture_start": 3.403117297646207,
+      "mixture_end": 4.308695528938724,
+      "channel": 3
+    }
+  },
+  "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 fireworks and ringtone",
+      "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 fireworks and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove ringtone",
+      "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_2dist_193_rep4.json b/data/audio_mixtures_no_speech/train/beach_2dist_193_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..d17bc59bb50a4943cee1d23ef0608691c0eb1d86
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_2dist_193_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "beach_2dist_193_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "fireworks"
+  ],
+  "audio_file": "beach_2dist_193_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_264.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6897732426303853,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_008.mp3",
+      "origin_start": 251.35945578231292,
+      "origin_end": 261.3594557823129,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_207681.wav",
+      "origin_start": 0.0007029478458049886,
+      "origin_end": 3.540997732426304,
+      "mixture_start": 0.43996485674405267,
+      "mixture_end": 3.9802705684093174,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_109753.wav",
+      "origin_start": 0.2415873015873016,
+      "origin_end": 2.288798185941043,
+      "mixture_start": 4.286865693828388,
+      "mixture_end": 6.334089366336183,
+      "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/beach_3dist_201_rep4.json b/data/audio_mixtures_no_speech/train/beach_3dist_201_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..603734d7e5c452a8a4e1b1f5140bf599f1405adb
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_201_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_201_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "helicopter",
+    "baby_cry"
+  ],
+  "audio_file": "beach_3dist_201_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p265/p265_304.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.036167800453515,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_029.mp3",
+      "origin_start": 122.23303854875283,
+      "origin_end": 132.23303854875283,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_434273.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5108390022675737,
+      "mixture_start": 8.930433991514597,
+      "mixture_end": 9.44127299378217,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/val/helicopter/esc-50_4-161579-B-40.wav",
+      "origin_start": 0.9400453514739229,
+      "origin_end": 4.326575963718821,
+      "mixture_start": 2.964700100539576,
+      "mixture_end": 6.351237425525678,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_259608.wav",
+      "origin_start": 19.04875283446712,
+      "origin_end": 21.5440589569161,
+      "mixture_start": 6.376101959724639,
+      "mixture_end": 8.8714198167497,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "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 fireworks and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and helicopter 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,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "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 fireworks and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "helicopter",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "baby_cry"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and helicopter and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "helicopter",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "baby_cry"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "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 helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and baby cry and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "baby_cry"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and baby cry and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep fireworks and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove fireworks and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove fireworks and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and 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/beach_3dist_210_rep3.json b/data/audio_mixtures_no_speech/train/beach_3dist_210_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..4a457dcfdf5348913da2445876de741732faeab2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_210_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "beach_3dist_210_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "fireworks",
+    "ringtone"
+  ],
+  "audio_file": "beach_3dist_210_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p270/p270_302.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.776235827664399,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_087.mp3",
+      "origin_start": 120.99020408163265,
+      "origin_end": 130.99020408163264,
+      "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": 2.023106575963719,
+      "origin_end": 5.232018140589569,
+      "mixture_start": 6.741767242044982,
+      "mixture_end": 9.950696387237045,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_46325.wav",
+      "origin_start": 4.940476190476191,
+      "origin_end": 7.52750566893424,
+      "mixture_start": 0.7343871418914711,
+      "mixture_end": 3.321421675301951,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_24929.wav",
+      "origin_start": 20.35893424036281,
+      "origin_end": 23.844512471655328,
+      "mixture_start": 2.363702865189359,
+      "mixture_end": 5.849286267181247,
+      "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 fireworks",
+      "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 fireworks",
+      "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 fireworks and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and fireworks 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 fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "fireworks",
+        "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 fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "fireworks",
+        "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 fireworks and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "fireworks",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and fireworks and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "fireworks",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "ringtone"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep ringtone",
+      "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 fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and ringtone and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "ringtone"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and ringtone and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep car alarm and fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove car alarm and fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove car alarm and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and ringtone 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/beach_3dist_213_rep2.json b/data/audio_mixtures_no_speech/train/beach_3dist_213_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..4a4d8ffcd94aadcbb7c855d9b9e15856f0c63cf0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_213_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_213_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "boom",
+    "car_horn"
+  ],
+  "audio_file": "beach_3dist_213_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p282/p282_190.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.202199546485261,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_038.mp3",
+      "origin_start": 208.93582766439908,
+      "origin_end": 218.93582766439908,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/esc-50_1-58792-A-24.wav",
+      "origin_start": 0.07485260770975057,
+      "origin_end": 2.5558503401360544,
+      "mixture_start": 3.4673447279247993,
+      "mixture_end": 5.9483491125211465,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_174281.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.474467120181406,
+      "mixture_start": 8.109740881601113,
+      "mixture_end": 9.584208001782518,
+      "channel": 3
+    },
+    "distractor_3": {
+      "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": 1.0144579807898697,
+      "mixture_end": 2.1638457358919103,
+      "channel": 4
+    }
+  },
+  "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 car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough 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": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and boom and car horn",
+      "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 car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and boom and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and car horn and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep cough and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep cough and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove cough and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and car horn and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove boom and car horn",
+      "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_226_rep3.json b/data/audio_mixtures_no_speech/train/beach_3dist_226_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..7a9a61b67d266818403cf6ecc7b7aa4b3890810a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_226_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_226_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "cough",
+    "fireworks"
+  ],
+  "audio_file": "beach_3dist_226_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p285/p285_155.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.692312925170068,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_044.mp3",
+      "origin_start": 81.26267573696146,
+      "origin_end": 91.26267573696146,
+      "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": 0.041723356009070296,
+      "origin_end": 2.4394557823129253,
+      "mixture_start": 0.06409349018677658,
+      "mixture_end": 2.4618315944790994,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/fsd50k_148310.wav",
+      "origin_start": 3.1326984126984128,
+      "origin_end": 6.075895691609977,
+      "mixture_start": 4.852108423015737,
+      "mixture_end": 7.795306926703361,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/esc-50_3-119120-B-48.wav",
+      "origin_start": 0.02510204081632653,
+      "origin_end": 2.04702947845805,
+      "mixture_start": 2.1042724269243327,
+      "mixture_end": 4.1262114985168825,
+      "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 cough",
+      "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 cough",
+      "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 cough and fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and cough 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 cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cough"
+      ],
+      "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 cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cough"
+      ],
+      "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 cough and fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cough",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and cough and fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cough",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove cough",
+      "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": "remove fireworks and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep cough and fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "fireworks"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough 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 cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove car alarm and cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove car alarm and fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough 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/beach_3dist_228_rep3.json b/data/audio_mixtures_no_speech/train/beach_3dist_228_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..c98a40b0c29093957b0e4dd61c24685e2363d9f4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_228_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_228_rep3",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "fireworks",
+    "siren"
+  ],
+  "audio_file": "beach_3dist_228_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_113.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.181678004535147,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_urVW36rIHYM_chunk_017.mp3",
+      "origin_start": 9.502857142857144,
+      "origin_end": 19.502857142857142,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_433639.wav",
+      "origin_start": 0.08861678004535148,
+      "origin_end": 2.8994557823129252,
+      "mixture_start": 4.240718090626217,
+      "mixture_end": 7.051570951271827,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/val/fireworks/fsd50k_169172.wav",
+      "origin_start": 0.11396825396825397,
+      "origin_end": 2.189342403628118,
+      "mixture_start": 1.1412676352988462,
+      "mixture_end": 3.216650512235682,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-43802-A-42.wav",
+      "origin_start": 0.2302721088435374,
+      "origin_end": 2.653219954648526,
+      "mixture_start": 6.622975696175915,
+      "mixture_end": 9.045927543099424,
+      "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 fireworks",
+      "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 fireworks",
+      "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 fireworks and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and fireworks 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 fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "fireworks",
+        "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 fireworks and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and fireworks and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "fireworks",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "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 fireworks and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove fireworks",
+      "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 fireworks and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep fireworks and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep cough and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and fireworks and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove cough and fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and siren and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove fireworks and siren",
+      "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_230_rep4.json b/data/audio_mixtures_no_speech/train/beach_3dist_230_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..6ff4ba172a705a673b6acbf9e839cba9425e6517
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_230_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_230_rep4",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "car_horn",
+    "dog"
+  ],
+  "audio_file": "beach_3dist_230_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p240/p240_049.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.817732426303855,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_urVW36rIHYM_chunk_018.mp3",
+      "origin_start": 40.95018140589569,
+      "origin_end": 50.95018140589569,
+      "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_66637_7.wav",
+      "origin_start": 0.9975963718820862,
+      "origin_end": 4.778616780045351,
+      "mixture_start": 3.460573905917782,
+      "mixture_end": 7.241616327672595,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/val/car_horn/esc-50_4-191015-A-43.wav",
+      "origin_start": 0.0063718820861678,
+      "origin_end": 2.7007709750566895,
+      "mixture_start": 0.4916772917903137,
+      "mixture_end": 3.1860802169281524,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/val/dog/esc-50_4-199261-A-0.wav",
+      "origin_start": 0.9297052154195011,
+      "origin_end": 4.235736961451247,
+      "mixture_start": 6.469420748145801,
+      "mixture_end": 9.775470229804638,
+      "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_231_rep2.json b/data/audio_mixtures_no_speech/train/beach_3dist_231_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..bda3308776e37273ec6d6118766e7db91235b0d1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_231_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "beach_3dist_231_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "ringtone",
+    "siren"
+  ],
+  "audio_file": "beach_3dist_231_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p281/p281_198.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8407256235827663,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_105.mp3",
+      "origin_start": 209.28,
+      "origin_end": 219.28,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_140728.wav",
+      "origin_start": 14.561995464852608,
+      "origin_end": 16.766167800453516,
+      "mixture_start": 7.294007034572813,
+      "mixture_end": 9.498188283046467,
+      "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": 5.292457235486703,
+      "mixture_end": 6.975903947504843,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_326074.wav",
+      "origin_start": 7.347324263038549,
+      "origin_end": 10.056689342403628,
+      "mixture_start": 1.719196308591677,
+      "mixture_end": 4.42858294808915,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "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 fireworks and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks 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 fireworks and ringtone and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "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 fireworks and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "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 fireworks and ringtone and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "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 fireworks and keep ringtone and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and siren and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren 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 siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove fireworks and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove ringtone and siren",
+      "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_248_rep1.json b/data/audio_mixtures_no_speech/train/beach_3dist_248_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..8fe4cb86249177e80e7f97bae79798ae2a048cf6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_248_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_248_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "cough",
+    "alarm_clock"
+  ],
+  "audio_file": "beach_3dist_248_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_063.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.816326530612245,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_Nep1qytq9JM_chunk_093.mp3",
+      "origin_start": 65.24020408163265,
+      "origin_end": 75.24020408163265,
+      "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": 0.2773469387755102,
+      "origin_end": 2.294875283446712,
+      "mixture_start": 0.738350298945198,
+      "mixture_end": 2.755895639802082,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_46971.wav",
+      "origin_start": 0.05621315192743764,
+      "origin_end": 3.104761904761905,
+      "mixture_start": 2.552627035406393,
+      "mixture_end": 5.601192142796707,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_18632.wav",
+      "origin_start": 6.805850340136055,
+      "origin_end": 9.703219954648526,
+      "mixture_start": 5.703410626490219,
+      "mixture_end": 8.600799946656513,
+      "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 alarm clock",
+      "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 alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cough 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 cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "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 cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "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 cough and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cough and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "alarm_clock"
+      ],
+      "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 alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove cough",
+      "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": "keep cough and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep cough and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep cellphone buzz vibrating alert and 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 cough and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove cellphone buzz vibrating alert and cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and alarm clock and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove cough and 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/beach_3dist_248_rep2.json b/data/audio_mixtures_no_speech/train/beach_3dist_248_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..f3470c6e2a7251bb198f2b0bcf31e11bb4935deb
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_248_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "beach_3dist_248_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "cough",
+    "alarm_clock"
+  ],
+  "audio_file": "beach_3dist_248_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p262/p262_372.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6067120181405894,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_001.mp3",
+      "origin_start": 125.26993197278911,
+      "origin_end": 135.26993197278912,
+      "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": 0.6611111111111111,
+      "origin_end": 4.4714285714285715,
+      "mixture_start": 0.0764210235693951,
+      "mixture_end": 3.8867418251811006,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/esc-50_1-19111-A-24.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8243083900226758,
+      "mixture_start": 5.53334680350933,
+      "mixture_end": 6.357655193532006,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_2-78562-B-37.wav",
+      "origin_start": 1.234875283446712,
+      "origin_end": 4.437074829931973,
+      "mixture_start": 5.413861032388141,
+      "mixture_end": 8.616061521346017,
+      "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 alarm clock",
+      "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 alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cough 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 cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "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 cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "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 cough and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cough and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "alarm_clock"
+      ],
+      "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 alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove cough",
+      "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": "keep cough and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep cough and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep cellphone buzz vibrating alert and 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 cough and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove cellphone buzz vibrating alert and cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and alarm clock and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove cough and 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/beach_3dist_249_rep1.json b/data/audio_mixtures_no_speech/train/beach_3dist_249_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..98baa01a3b98c9b9e36744691d215badfacfa072
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_249_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "beach_3dist_249_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "ringtone",
+    "dog"
+  ],
+  "audio_file": "beach_3dist_249_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p236/p236_159.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.094081632653061,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_Nep1qytq9JM_chunk_118.mp3",
+      "origin_start": 123.84693877551021,
+      "origin_end": 133.8469387755102,
+      "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": 7.713302684240307,
+      "mixture_end": 8.649923999433051,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167538.wav",
+      "origin_start": 2.4741043083900225,
+      "origin_end": 5.220975056689342,
+      "mixture_start": 1.8003061806132437,
+      "mixture_end": 4.547183149543968,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_236967.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8243083900226758,
+      "mixture_start": 8.507796364132844,
+      "mixture_end": 9.33210475415552,
+      "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 dog",
+      "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 dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and ringtone and dog",
+      "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 dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone",
+        "dog"
+      ],
+      "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 dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and ringtone and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "ringtone",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        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 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",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and dog and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "dog"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep car alarm and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and ringtone and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and ringtone and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and dog and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone 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/beach_3dist_250_rep2.json b/data/audio_mixtures_no_speech/train/beach_3dist_250_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..a0c36e0786b3d14747b3f63954bbe4f69de7334d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_250_rep2.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "beach_3dist_250_rep2",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "baby_cry",
+    "gunshot"
+  ],
+  "audio_file": "beach_3dist_250_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p244/p244_325.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.1000680272108845,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Beach/asmr_Beach_Nep1qytq9JM_chunk_041.mp3",
+      "origin_start": 218.94308390022675,
+      "origin_end": 228.94308390022675,
+      "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": 3.197439287886979,
+      "mixture_end": 3.9520878139640763,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_470039_1.wav",
+      "origin_start": 1.66578231292517,
+      "origin_end": 4.999115646258503,
+      "mixture_start": 3.550222000575248,
+      "mixture_end": 6.883574422089185,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_201667.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6370068027210884,
+      "mixture_start": 7.5457611523059205,
+      "mixture_end": 9.182767955027009,
+      "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": "remove cellphone buzz vibrating alert and keep baby cry",
+      "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": "remove baby cry and keep gunshot",
+      "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": "keep cellphone buzz vibrating alert and 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 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": "keep baby cry and remove cellphone buzz vibrating alert and gunshot",
+      "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/beach_3dist_257_rep1.json b/data/audio_mixtures_no_speech/train/beach_3dist_257_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..e87d49d5046a28accbb96bf65f4d7270790e157b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_257_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "beach_3dist_257_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "alarm_clock",
+    "birds_chirping",
+    "cricket"
+  ],
+  "audio_file": "beach_3dist_257_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_121.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.569410430839002,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_urVW36rIHYM_chunk_019.mp3",
+      "origin_start": 113.38253968253969,
+      "origin_end": 123.38253968253969,
+      "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_3-117883-A-37.wav",
+      "origin_start": 0.1017233560090703,
+      "origin_end": 3.958843537414966,
+      "mixture_start": 3.1017340577833084,
+      "mixture_end": 6.958860368755575,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_47606.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.533015873015873,
+      "mixture_start": 5.965876188274638,
+      "mixture_end": 6.498892061290511,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/val/cricket/fsd50k_318961.wav",
+      "origin_start": 1.4189795918367347,
+      "origin_end": 4.016530612244898,
+      "mixture_start": 7.105325378098126,
+      "mixture_end": 9.702893389636548,
+      "channel": 4
+    }
+  },
+  "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 birds chirping",
+      "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 birds chirping",
+      "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": "remove birds chirping and cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and birds chirping 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 birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "cricket"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and birds chirping and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "birds_chirping",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep birds chirping and cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "cricket"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and cricket and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and birds chirping and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and birds chirping and keep cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove alarm clock and cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and 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_3dist_275_rep1.json b/data/audio_mixtures_no_speech/train/beach_3dist_275_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..f03883d67512ad384104cf8c5364bfe52947708b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/beach_3dist_275_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "beach_3dist_275_rep1",
+  "scene_name": "Beach",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "birds_chirping",
+    "boom"
+  ],
+  "audio_file": "beach_3dist_275_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p257/p257_303.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0079591836734694,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Beach/asmr_Beach_Nep1qytq9JM_chunk_079.mp3",
+      "origin_start": 153.7454195011338,
+      "origin_end": 163.7454195011338,
+      "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": 0.00798185941043084,
+      "origin_end": 3.481315192743764,
+      "mixture_start": 0.918671170297986,
+      "mixture_end": 4.392004968812773,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_85409.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.7161678004535148,
+      "mixture_start": 7.589082081421416,
+      "mixture_end": 9.30524988187493,
+      "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": 0.42536250482129173,
+      "mixture_end": 1.3043874481319493,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "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 birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove birds chirping and boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and birds chirping 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,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "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",
+        "boom"
+      ],
+      "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"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and birds chirping and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and boom and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep cellphone buzz vibrating alert and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and birds chirping and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove cellphone buzz vibrating alert and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and boom and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and boom 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_1dist_005_rep3.json b/data/audio_mixtures_no_speech/train/bus_1dist_005_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..8ef32f77da5a00f901aff948b5e6386713e9e3e6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_005_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "bus_1dist_005_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "car_horn"
+  ],
+  "audio_file": "bus_1dist_005_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_221.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8627891156462586,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_004.mp3",
+      "origin_start": 221.28083900226758,
+      "origin_end": 231.28083900226758,
+      "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_3-155234-A-43.wav",
+      "origin_start": 0.211156462585034,
+      "origin_end": 3.669160997732426,
+      "mixture_start": 5.064402014275535,
+      "mixture_end": 8.522406978792272,
+      "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_007_rep3.json b/data/audio_mixtures_no_speech/train/bus_1dist_007_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..921cdb6037b830103c982ea36a26f7c537fb9b9e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_007_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "bus_1dist_007_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "bus_1dist_007_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p257/p257_396.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.7938775510204081,
+      "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": 224.10492063492063,
+      "origin_end": 234.10492063492063,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/val/gunshot/fsd50k_180961.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6385487528344671,
+      "mixture_start": 2.0597379635521675,
+      "mixture_end": 2.698286716386635,
+      "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/bus_1dist_059_rep3.json b/data/audio_mixtures_no_speech/train/bus_1dist_059_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..a28bc7dcf0c9b94660c8b85bd11aa7ad15d587f5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_059_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "bus_1dist_059_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "engine"
+  ],
+  "audio_file": "bus_1dist_059_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p264/p264_461.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.165124716553288,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_ktprPL9EoyY_chunk_000.mp3",
+      "origin_start": 227.84072562358276,
+      "origin_end": 237.84072562358276,
+      "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": 0.16659863945578232,
+      "origin_end": 3.7955102040816326,
+      "mixture_start": 0.46027488573008224,
+      "mixture_end": 4.089198939831377,
+      "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/bus_1dist_062_rep3.json b/data/audio_mixtures_no_speech/train/bus_1dist_062_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..2d03df47e3209ee8d447cc5b8197ca5175fd98c0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_062_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "bus_1dist_062_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "bus_1dist_062_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_269.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.414625850340136,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_ziS8jw1Kl30_chunk_001.mp3",
+      "origin_start": 172.00485260770975,
+      "origin_end": 182.00485260770975,
+      "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": 3.2634003995698415,
+      "mixture_end": 4.273468426780726,
+      "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/bus_1dist_070_rep3.json b/data/audio_mixtures_no_speech/train/bus_1dist_070_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..ea53df2dbf970c6598e06ec67b97fdb6def75070
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_070_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "bus_1dist_070_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "car_horn"
+  ],
+  "audio_file": "bus_1dist_070_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p273/p273_398.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.162063492063492,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_010.mp3",
+      "origin_start": 8.374331065759637,
+      "origin_end": 18.374331065759637,
+      "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_3-145577-A-43.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.905578231292517,
+      "mixture_start": 6.808755018724996,
+      "mixture_end": 7.714333250017513,
+      "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_074_rep4.json b/data/audio_mixtures_no_speech/train/bus_1dist_074_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..ab4fd0bb48193cc616de05cb020d0791e4585235
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_074_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "bus_1dist_074_rep4",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "bus_1dist_074_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_155.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.7153061224489794,
+      "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": 108.00485260770975,
+      "origin_end": 118.00485260770975,
+      "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": 13.043219954648526,
+      "origin_end": 15.803469387755102,
+      "mixture_start": 1.6175826456852043,
+      "mixture_end": 4.37785356942113,
+      "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_076_rep4.json b/data/audio_mixtures_no_speech/train/bus_1dist_076_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..2771cdb881971008f5a180fba18bcdea0518fb5a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_1dist_076_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "bus_1dist_076_rep4",
+  "scene_name": "Bus",
+  "distractor_count": 1,
+  "distractors": [
+    "glass_breaking"
+  ],
+  "audio_file": "bus_1dist_076_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_155.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.287641723356009,
+      "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": 255.59371882086168,
+      "origin_end": 265.5937188208617,
+      "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_92643.wav",
+      "origin_start": 1.9865532879818595,
+      "origin_end": 5.307777777777778,
+      "mixture_start": 0.6449587081811917,
+      "mixture_end": 3.966195044120754,
+      "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/bus_2dist_129_rep3.json b/data/audio_mixtures_no_speech/train/bus_2dist_129_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..29e30f38d43c91b50b1cfc38a6f0a06ad4a0ae73
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_129_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_129_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "jackhammer"
+  ],
+  "audio_file": "bus_2dist_129_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_297.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.483174603174604,
+      "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": 270.04392290249433,
+      "origin_end": 280.04392290249433,
+      "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": 7.129265509886218,
+      "mixture_end": 7.802644194693475,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386240.wav",
+      "origin_start": 5.306870748299319,
+      "origin_end": 8.876734693877552,
+      "mixture_start": 6.306968563454312,
+      "mixture_end": 9.876848792822145,
+      "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 jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze 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 jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove jackhammer",
+      "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_152_rep2.json b/data/audio_mixtures_no_speech/train/bus_2dist_152_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..10c9b9a6921481e4a9348d3a0e2913ac400f8d11
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_152_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_152_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "helicopter",
+    "baby_cry"
+  ],
+  "audio_file": "bus_2dist_152_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_079.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.5023809523809524,
+      "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": 181.45297052154194,
+      "origin_end": 191.45297052154194,
+      "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": 0.7999319727891157,
+      "origin_end": 4.604920634920635,
+      "mixture_start": 2.8784514147555114,
+      "mixture_end": 6.683444130953772,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_198411_6.wav",
+      "origin_start": 17.624580498866212,
+      "origin_end": 19.885759637188208,
+      "mixture_start": 6.608872367661696,
+      "mixture_end": 8.870070276154115,
+      "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 baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and baby cry",
+      "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 baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry 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_175_rep4.json b/data/audio_mixtures_no_speech/train/bus_2dist_175_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..e34d69463b2f6f161f028f42f2a8deb79dc257e5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_175_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_175_rep4",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "helicopter",
+    "slam"
+  ],
+  "audio_file": "bus_2dist_175_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p229/p229_099.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.41437641723356,
+      "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": 43.38006802721088,
+      "origin_end": 53.38006802721088,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_2-188822-C-40.wav",
+      "origin_start": 0.6763718820861678,
+      "origin_end": 3.4964172335600905,
+      "mixture_start": 4.606411564766974,
+      "mixture_end": 7.426472121284194,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_413274.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6617687074829932,
+      "mixture_start": 4.320014742075677,
+      "mixture_end": 4.98178344955867,
+      "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 slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and slam",
+      "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 slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove 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/bus_2dist_190_rep2.json b/data/audio_mixtures_no_speech/train/bus_2dist_190_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..d260a2ad8837c193789436b10a1e09c47f2014d4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_2dist_190_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "bus_2dist_190_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 2,
+  "distractors": [
+    "fireworks",
+    "car_horn"
+  ],
+  "audio_file": "bus_2dist_190_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p282/p282_200.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8213378684807258,
+      "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": 58.15673469387755,
+      "origin_end": 68.15673469387755,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/val/fireworks/fsd50k_46328.wav",
+      "origin_start": 0.1839002267573696,
+      "origin_end": 2.984829931972789,
+      "mixture_start": 1.8253787515987825,
+      "mixture_end": 4.626330355889758,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/esc-50_3-145577-A-43.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.905578231292517,
+      "mixture_start": 3.9979861340845826,
+      "mixture_end": 4.9035643653770995,
+      "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/bus_3dist_212_rep2.json b/data/audio_mixtures_no_speech/train/bus_3dist_212_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..3de4e9d2b0da250a6278d9160085cca77860b9d3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_212_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "bus_3dist_212_rep2",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "door_knock",
+    "footsteps",
+    "slam"
+  ],
+  "audio_file": "bus_3dist_212_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_180.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9457142857142857,
+      "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": 288.8487074829932,
+      "origin_end": 298.8487074829932,
+      "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_349310.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.7531065759637188,
+      "mixture_start": 5.159777263377487,
+      "mixture_end": 6.912883839341205,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_94370.wav",
+      "origin_start": 1.32297052154195,
+      "origin_end": 3.5006349206349205,
+      "mixture_start": 2.4191652069752636,
+      "mixture_end": 4.596835610124131,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_89142.wav",
+      "origin_start": 0.04698412698412698,
+      "origin_end": 2.1365986394557823,
+      "mixture_start": 0.5094044966877542,
+      "mixture_end": 2.5990273445296364,
+      "channel": 4
+    }
+  },
+  "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": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove door knock and footsteps",
+      "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 footsteps and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove door knock and footsteps and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep door knock and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "door_knock",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep door knock and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "door_knock",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep door knock and footsteps and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "door_knock",
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep slam and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove door knock and keep footsteps and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep door knock and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep door knock and footsteps and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove door knock and footsteps and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove door knock and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and slam 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/bus_3dist_216_rep4.json b/data/audio_mixtures_no_speech/train/bus_3dist_216_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..d31fec8261d7a6e1bb7dfc48e9839138cd9c5018
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_216_rep4.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "bus_3dist_216_rep4",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "engine",
+    "hammer"
+  ],
+  "audio_file": "bus_3dist_216_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p268/p268_037.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.202312925170068,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_ktprPL9EoyY_chunk_001.mp3",
+      "origin_start": 23.876031746031746,
+      "origin_end": 33.87603174603175,
+      "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": 0.11863945578231293,
+      "origin_end": 2.4794557823129253,
+      "mixture_start": 2.7770814075660275,
+      "mixture_end": 5.137906758479588,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/val/engine/esc-50_4-186935-A-44.wav",
+      "origin_start": 0.10240362811791383,
+      "origin_end": 3.4870748299319727,
+      "mixture_start": 4.53779863224523,
+      "mixture_end": 7.922491608074121,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_319529.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6617687074829932,
+      "mixture_start": 0.5165121741046721,
+      "mixture_end": 1.1782808815876653,
+      "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_223_rep1.json b/data/audio_mixtures_no_speech/train/bus_3dist_223_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..1b8ce174a966c72ddae94f98eee1a1e571bbb631
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_223_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "bus_3dist_223_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "baby_cry",
+    "jackhammer"
+  ],
+  "audio_file": "bus_3dist_223_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_161.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.055510204081632,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_r38kWRF-FSg_chunk_004.mp3",
+      "origin_start": 165.65548752834468,
+      "origin_end": 175.65548752834468,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_381362.wav",
+      "origin_start": 5.751678004535147,
+      "origin_end": 9.220045351473923,
+      "mixture_start": 4.6106273923877605,
+      "mixture_end": 8.079001028557077,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/esc-50_3-152007-C-20.wav",
+      "origin_start": 1.1763038548752835,
+      "origin_end": 4.720634920634921,
+      "mixture_start": 1.0972049420590404,
+      "mixture_end": 4.6415395959422305,
+      "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": 4.356605798916254,
+      "mixture_end": 4.937104665129406,
+      "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 baby cry",
+      "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 baby cry",
+      "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 baby cry and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and baby cry 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 baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "baby_cry"
+      ],
+      "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 baby cry and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and baby cry and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "baby_cry",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry 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"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and jackhammer and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and jackhammer and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and baby cry and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and baby cry and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove applause and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove baby cry 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_240_rep3.json b/data/audio_mixtures_no_speech/train/bus_3dist_240_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..6858e58985de04a41d9d8f53fb57139e1ad56c1c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_240_rep3.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "bus_3dist_240_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "helicopter",
+    "alarm_clock"
+  ],
+  "audio_file": "bus_3dist_240_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p285/p285_005.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.636031746031746,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Bus/asmr_Bus_ktprPL9EoyY_chunk_001.mp3",
+      "origin_start": 28.656598639455783,
+      "origin_end": 38.65659863945578,
+      "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": 9.795034013605441,
+      "origin_end": 12.010770975056689,
+      "mixture_start": 7.494440339174743,
+      "mixture_end": 9.710197202446139,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_1-172649-A-40.wav",
+      "origin_start": 0.1349206349206349,
+      "origin_end": 4.086054421768708,
+      "mixture_start": 0.9115051585927438,
+      "mixture_end": 4.862660195459119,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_1-13613-A-37.wav",
+      "origin_start": 1.7810884353741496,
+      "origin_end": 4.310340136054422,
+      "mixture_start": 5.058297128736651,
+      "mixture_end": 7.587552133257816,
+      "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 helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and helicopter",
+      "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 helicopter and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and helicopter and alarm clock",
+      "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 helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and helicopter and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "helicopter",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and alarm clock and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep applause and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock 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 alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove applause and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove helicopter and alarm clock",
+      "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_242_rep1.json b/data/audio_mixtures_no_speech/train/bus_3dist_242_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..84ebf7b4661a80ef6a4ea34b83906cf719fa1de1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_242_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "bus_3dist_242_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "engine",
+    "sneeze",
+    "gunshot"
+  ],
+  "audio_file": "bus_3dist_242_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_385.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.9269614512471653,
+      "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": 158.0262358276644,
+      "origin_end": 168.0262358276644,
+      "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": 1.3655102040816327,
+      "origin_end": 3.8703854875283445,
+      "mixture_start": 5.259539054920028,
+      "mixture_end": 7.764429289458813,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_2-82538-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7546485260770975,
+      "mixture_start": 0.5602691626476117,
+      "mixture_end": 1.3149176887247092,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_371548.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7546485260770975,
+      "mixture_start": 4.466229398168523,
+      "mixture_end": 5.220877924245621,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "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 engine and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and 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": "remove engine and sneeze and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and sneeze and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep sneeze and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and gunshot and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and sneeze and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove engine and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove engine and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and gunshot 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/bus_3dist_246_rep1.json b/data/audio_mixtures_no_speech/train/bus_3dist_246_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..9df1829d0f936e2ad5a41504ef2dc435a93ea5c7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_246_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "bus_3dist_246_rep1",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "engine",
+    "footsteps",
+    "hammer"
+  ],
+  "audio_file": "bus_3dist_246_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_040.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.604716553287982,
+      "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": 209.85310657596372,
+      "origin_end": 219.85310657596372,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/val/engine/esc-50_4-186962-A-44.wav",
+      "origin_start": 1.7646031746031745,
+      "origin_end": 4.145260770975057,
+      "mixture_start": 1.2576110741403475,
+      "mixture_end": 3.6382826261783268,
+      "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": 8.296582438477245,
+      "mixture_end": 9.980029150495385,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_388060.wav",
+      "origin_start": 16.148367346938777,
+      "origin_end": 19.36108843537415,
+      "mixture_start": 3.9123174960017395,
+      "mixture_end": 7.125054620773824,
+      "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 footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and footsteps",
+      "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 footsteps and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and footsteps and hammer",
+      "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 footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and footsteps and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "footsteps",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and hammer and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and hammer and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep engine and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and footsteps and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove engine and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and hammer 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/bus_3dist_269_rep3.json b/data/audio_mixtures_no_speech/train/bus_3dist_269_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..1a470cafa5f2b67e3bfecc973b8b46307f8e9026
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/bus_3dist_269_rep3.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "bus_3dist_269_rep3",
+  "scene_name": "Bus",
+  "distractor_count": 3,
+  "distractors": [
+    "sneeze",
+    "computer_typing",
+    "jackhammer"
+  ],
+  "audio_file": "bus_3dist_269_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p265/p265_115.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.890272108843537,
+      "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": 141.09562358276645,
+      "origin_end": 151.09562358276645,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_1-81883-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8243083900226758,
+      "mixture_start": 6.462987635582347,
+      "mixture_end": 7.2872960256050225,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/fsd50k_339347.wav",
+      "origin_start": 25.04591836734694,
+      "origin_end": 28.025079365079364,
+      "mixture_start": 5.827928900026088,
+      "mixture_end": 8.80709601162088,
+      "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": 9.12387846284193,
+      "mixture_end": 9.750817238352134,
+      "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 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 sneeze and computer typing",
+      "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 computer typing and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and computer typing 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 computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "computer_typing"
+      ],
+      "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 computer typing and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and computer typing and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "computer_typing",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep computer typing and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and jackhammer and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and computer typing and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and computer typing and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and jackhammer and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing 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/city_1dist_001_rep3.json b/data/audio_mixtures_no_speech/train/city_1dist_001_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..87ab6b3afdc1990e5ae835b58019c54d29c164fa
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_001_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "city_1dist_001_rep3",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "applause"
+  ],
+  "audio_file": "city_1dist_001_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_154.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6904988662131517,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_037.mp3",
+      "origin_start": 82.20297052154196,
+      "origin_end": 92.20297052154196,
+      "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": 1.9545351473922903,
+      "origin_end": 4.620612244897959,
+      "mixture_start": 4.328937580368065,
+      "mixture_end": 6.995033124986961,
+      "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/city_1dist_007_rep2.json b/data/audio_mixtures_no_speech/train/city_1dist_007_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..eb3a6b93c9ba14bb3cf88c96073403a9fbbe97b8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_007_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_007_rep2",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "alarm_clock"
+  ],
+  "audio_file": "city_1dist_007_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p267/p267_290.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.647936507936508,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_sXJLT3kYdhk_chunk_001.mp3",
+      "origin_start": 46.23253968253968,
+      "origin_end": 56.23253968253968,
+      "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_3-132340-A-37.wav",
+      "origin_start": 2.151904761904762,
+      "origin_end": 4.574807256235828,
+      "mixture_start": 1.3330595325338208,
+      "mixture_end": 3.755981901382965,
+      "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_019_rep1.json b/data/audio_mixtures_no_speech/train/city_1dist_019_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..dfbfbd24911769dd6c2e2b5d7650abce3e5b2f96
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_019_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_019_rep1",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "glass_breaking"
+  ],
+  "audio_file": "city_1dist_019_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p257/p257_284.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8451473922902495,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_028.mp3",
+      "origin_start": 93.87979591836735,
+      "origin_end": 103.87979591836735,
+      "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_164330.wav",
+      "origin_start": 0.010090702947845805,
+      "origin_end": 2.1424263038548754,
+      "mixture_start": 3.1287081345056693,
+      "mixture_end": 5.261047797850198,
+      "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_rep3.json b/data/audio_mixtures_no_speech/train/city_1dist_023_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..a2e204d14fcb78e6201425e0bc34acc4f2403ac6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_023_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "city_1dist_023_rep3",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "helicopter"
+  ],
+  "audio_file": "city_1dist_023_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p280/p280_250.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.716666666666667,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_024.mp3",
+      "origin_start": 276.59968253968253,
+      "origin_end": 286.59968253968253,
+      "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": 0.7067800453514739,
+      "origin_end": 4.665736961451247,
+      "mixture_start": 2.3521181394416857,
+      "mixture_end": 6.311076129326689,
+      "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_032_rep4.json b/data/audio_mixtures_no_speech/train/city_1dist_032_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..efafc6b8644d1fa3254c5a02883d6124c47f924a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_032_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_032_rep4",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "city_1dist_032_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p234/p234_284.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.179183673469388,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_BAw342Xqxhs_chunk_004.mp3",
+      "origin_start": 6.5456689342403624,
+      "origin_end": 16.545668934240364,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/val/ringtone/fsd50k_138272.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.3815873015873017,
+      "mixture_start": 0.8252702406904107,
+      "mixture_end": 2.2068575422777124,
+      "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/city_1dist_035_rep1.json b/data/audio_mixtures_no_speech/train/city_1dist_035_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..a7dbae0ad2211a2f6ff183ce37d1f87ed93f61c5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_035_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_035_rep1",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "boom"
+  ],
+  "audio_file": "city_1dist_035_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p244/p244_408.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.18655328798186,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_024.mp3",
+      "origin_start": 200.81931972789116,
+      "origin_end": 210.81931972789116,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_93836.wav",
+      "origin_start": 0.7719954648526077,
+      "origin_end": 4.595283446712018,
+      "mixture_start": 1.7626462274114327,
+      "mixture_end": 5.585954381169226,
+      "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_037_rep1.json b/data/audio_mixtures_no_speech/train/city_1dist_037_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..45fa6acaaf3fabc9d2337e8f834538f3a67213ed
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_037_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "city_1dist_037_rep1",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "hammer"
+  ],
+  "audio_file": "city_1dist_037_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p257/p257_056.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.5805215419501133,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_088.mp3",
+      "origin_start": 235.66573696145124,
+      "origin_end": 245.66573696145124,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_408762.wav",
+      "origin_start": 1.0907709750566894,
+      "origin_end": 4.046780045351474,
+      "mixture_start": 1.2908447272129917,
+      "mixture_end": 4.246856839717277,
+      "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_042_rep1.json b/data/audio_mixtures_no_speech/train/city_1dist_042_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..7406d6e09c8b28f0d8e18634c1d06f59b9b54a0c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_042_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "city_1dist_042_rep1",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "alarm_clock"
+  ],
+  "audio_file": "city_1dist_042_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p266/p266_280.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6655102040816328,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_039.mp3",
+      "origin_start": 29.34755102040816,
+      "origin_end": 39.34755102040816,
+      "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": 0.44215419501133785,
+      "origin_end": 3.0886621315192744,
+      "mixture_start": 2.0504196585074896,
+      "mixture_end": 4.696935463766257,
+      "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_056_rep3.json b/data/audio_mixtures_no_speech/train/city_1dist_056_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..04f28b13c795353b0e8f2758baf8b0b019b9cd62
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_056_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "city_1dist_056_rep3",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "city_1dist_056_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_420.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.6700680272108843,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_076.mp3",
+      "origin_start": 265.32850340136054,
+      "origin_end": 275.32850340136054,
+      "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_2.wav",
+      "origin_start": 1.0738095238095238,
+      "origin_end": 4.06734693877551,
+      "mixture_start": 5.178496399112654,
+      "mixture_end": 8.172039819043587,
+      "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_075_rep1.json b/data/audio_mixtures_no_speech/train/city_1dist_075_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..71943f805dee573ec8cccc12baab1f8c923578f8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_075_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "city_1dist_075_rep1",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "sneeze"
+  ],
+  "audio_file": "city_1dist_075_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p237/p237_204.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.7365079365079366,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/City/asmr_City_KkXLEHqzYZk_chunk_035.mp3",
+      "origin_start": 24.404421768707483,
+      "origin_end": 34.404421768707486,
+      "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": 0.029047619047619048,
+      "origin_end": 2.306938775510204,
+      "mixture_start": 2.8878572644429013,
+      "mixture_end": 5.165765733471828,
+      "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_081_rep3.json b/data/audio_mixtures_no_speech/train/city_1dist_081_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..3c84af43a01249e39dd76f00cdf7e7171bdd090a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_1dist_081_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "city_1dist_081_rep3",
+  "scene_name": "City",
+  "distractor_count": 1,
+  "distractors": [
+    "fireworks"
+  ],
+  "audio_file": "city_1dist_081_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_038.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.587324263038549,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_066.mp3",
+      "origin_start": 50.766439909297056,
+      "origin_end": 60.766439909297056,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_349826.wav",
+      "origin_start": 10.135963718820861,
+      "origin_end": 13.305873015873017,
+      "mixture_start": 6.444264735610626,
+      "mixture_end": 9.614188565993725,
+      "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_2dist_112_rep4.json b/data/audio_mixtures_no_speech/train/city_2dist_112_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..eacac4d2dc084fd4db47f141ba1292df300715b4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_112_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "city_2dist_112_rep4",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "fireworks",
+    "car_horn"
+  ],
+  "audio_file": "city_2dist_112_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p266/p266_025.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.563015873015873,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_BAw342Xqxhs_chunk_005.mp3",
+      "origin_start": 5.849092970521542,
+      "origin_end": 15.849092970521541,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_376657.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.195827664399093,
+      "mixture_start": 3.7793606118844902,
+      "mixture_end": 4.975188276283584,
+      "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": 0.7310657596371882,
+      "origin_end": 4.3212018140589565,
+      "mixture_start": 4.138660697680586,
+      "mixture_end": 7.728800610594462,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "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 fireworks and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "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 fireworks and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car 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_119_rep4.json b/data/audio_mixtures_no_speech/train/city_2dist_119_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..20c7d1ededa3acdcd76be7ba83a52fbc2593cf34
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_119_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "city_2dist_119_rep4",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "train_horn"
+  ],
+  "audio_file": "city_2dist_119_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p228/p228_204.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.7762585034013605,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_104.mp3",
+      "origin_start": 19.10453514739229,
+      "origin_end": 29.10453514739229,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_19113.wav",
+      "origin_start": 0.009546485260770975,
+      "origin_end": 2.3335147392290247,
+      "mixture_start": 5.063641191964828,
+      "mixture_end": 7.387624498116273,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "train_horn",
+      "display_name": "train horn",
+      "original_path": "distractors/train/train_horn/fsd50k_332415.wav",
+      "origin_start": 13.869251700680271,
+      "origin_end": 17.073469387755104,
+      "mixture_start": 2.3102276521034435,
+      "mixture_end": 5.5144506891473855,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "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 cough and train horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "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 cough and train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove train horn 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_2dist_126_rep1.json b/data/audio_mixtures_no_speech/train/city_2dist_126_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..49689aaa3fa0bf2f32222132b4fd98c66af428bd
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_126_rep1.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "city_2dist_126_rep1",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "drill",
+    "baby_cry"
+  ],
+  "audio_file": "city_2dist_126_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_394.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.756893424036281,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_092.mp3",
+      "origin_start": 69.96637188208616,
+      "origin_end": 79.96637188208616,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_66622.wav",
+      "origin_start": 4.514353741496599,
+      "origin_end": 6.613605442176871,
+      "mixture_start": 6.584837848896879,
+      "mixture_end": 8.684106854016179,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/val/baby_cry/disco_noises_198411_8.wav",
+      "origin_start": 14.433786848072563,
+      "origin_end": 17.159909297052153,
+      "mixture_start": 2.9916402593340403,
+      "mixture_end": 5.717777747940957,
+      "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 baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and baby cry",
+      "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 baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry 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/city_2dist_194_rep4.json b/data/audio_mixtures_no_speech/train/city_2dist_194_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..553d25fffd0af051f64146e1311a599f5db5fd01
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_2dist_194_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "city_2dist_194_rep4",
+  "scene_name": "City",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "sneeze"
+  ],
+  "audio_file": "city_2dist_194_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_177.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.162675736961451,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_055.mp3",
+      "origin_start": 285.64668934240365,
+      "origin_end": 295.64668934240365,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_242584.wav",
+      "origin_start": 3.370045351473923,
+      "origin_end": 6.060566893424037,
+      "mixture_start": 4.7660526042827405,
+      "mixture_end": 7.45658876753836,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_368804.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6617687074829932,
+      "mixture_start": 4.865347893296033,
+      "mixture_end": 5.527116600779026,
+      "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 sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and sneeze",
+      "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 sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze 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/city_3dist_204_rep1.json b/data/audio_mixtures_no_speech/train/city_3dist_204_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..84f6f4dd50d6df0478e5666621ea004860bc7628
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_204_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "city_3dist_204_rep1",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "footsteps",
+    "gunshot",
+    "hammer"
+  ],
+  "audio_file": "city_3dist_204_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_053.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.456780045351474,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/City/asmr_City_sXJLT3kYdhk_chunk_008.mp3",
+      "origin_start": 79.75798185941044,
+      "origin_end": 89.75798185941044,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_398778.wav",
+      "origin_start": 4.793038548752834,
+      "origin_end": 7.976757369614512,
+      "mixture_start": 2.7298491084319596,
+      "mixture_end": 5.913569004325183,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_239138.wav",
+      "origin_start": 0.21857142857142858,
+      "origin_end": 2.7438321995464854,
+      "mixture_start": 7.215840329809453,
+      "mixture_end": 9.741103484465487,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_99964.wav",
+      "origin_start": 3.2239909297052156,
+      "origin_end": 5.6780952380952385,
+      "mixture_start": 0.4883312177538463,
+      "mixture_end": 2.942436278441996,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "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 hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove footsteps and gunshot and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "gunshot",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and gunshot and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "gunshot",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep gunshot and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep footsteps and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep footsteps and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove footsteps and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove footsteps and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove gunshot and hammer",
+      "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/city_3dist_221_rep2.json b/data/audio_mixtures_no_speech/train/city_3dist_221_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..801d203f965414bb08e7d5d2c40c78b89bb1056e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_221_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "city_3dist_221_rep2",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "drill",
+    "helicopter",
+    "gunshot"
+  ],
+  "audio_file": "city_3dist_221_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p257/p257_113.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.709251700680272,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_sXJLT3kYdhk_chunk_006.mp3",
+      "origin_start": 272.26326530612243,
+      "origin_end": 282.26326530612243,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_29722.wav",
+      "origin_start": 12.847437641723356,
+      "origin_end": 16.278049886621314,
+      "mixture_start": 4.391916068151532,
+      "mixture_end": 7.822530806813855,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_2-37806-A-40.wav",
+      "origin_start": 0.2618367346938775,
+      "origin_end": 2.3480725623582765,
+      "mixture_start": 7.256404778217012,
+      "mixture_end": 9.342653191085208,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_220130.wav",
+      "origin_start": 1.790748299319728,
+      "origin_end": 4.095260770975057,
+      "mixture_start": 0.1543537710613322,
+      "mixture_end": 2.458869113100577,
+      "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 helicopter",
+      "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 helicopter",
+      "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 helicopter and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and helicopter 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 helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "helicopter",
+        "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 helicopter and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and helicopter and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "helicopter",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and keep helicopter and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and gunshot and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep drill and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove drill and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove drill and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter 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/city_3dist_222_rep2.json b/data/audio_mixtures_no_speech/train/city_3dist_222_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..983f20b03ec9ec909409dff8e1db01ed575fdf42
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_222_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "city_3dist_222_rep2",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "baby_cry",
+    "birds_chirping"
+  ],
+  "audio_file": "city_3dist_222_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_211.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8006122448979593,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_107.mp3",
+      "origin_start": 107.76231292517006,
+      "origin_end": 117.76231292517006,
+      "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": 0.16315192743764173,
+      "origin_end": 3.066145124716553,
+      "mixture_start": 5.800815213231875,
+      "mixture_end": 8.703828615099912,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_179773.wav",
+      "origin_start": 7.296213151927438,
+      "origin_end": 10.800272108843538,
+      "mixture_start": 1.874657740215564,
+      "mixture_end": 5.378731020850669,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/val/birds_chirping/fsd50k_353448.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.683015873015873,
+      "mixture_start": 4.4777649924369465,
+      "mixture_end": 6.1607808654528196,
+      "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 baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and baby cry and birds chirping",
+      "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 baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and baby cry and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and birds chirping and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and birds chirping and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep applause and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove applause and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove applause and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and birds chirping 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/city_3dist_225_rep3.json b/data/audio_mixtures_no_speech/train/city_3dist_225_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..4b10a3e2baa9b9d8ea0d59da04284810e33507df
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_225_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "city_3dist_225_rep3",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "car_horn",
+    "jackhammer"
+  ],
+  "audio_file": "city_3dist_225_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_126.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.2639229024943313,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_086.mp3",
+      "origin_start": 21.191519274376418,
+      "origin_end": 31.191519274376418,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_232285.wav",
+      "origin_start": 15.257732426303855,
+      "origin_end": 17.677619047619046,
+      "mixture_start": 6.04877748937242,
+      "mixture_end": 8.468684285907145,
+      "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": 4.763852940226231,
+      "mixture_end": 6.575009402811265,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_146254.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9980045351473923,
+      "mixture_start": 1.8954107669201536,
+      "mixture_end": 3.893415302067546,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "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 jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and car horn and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "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 jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        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 jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "car_horn",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and car horn and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "car_horn",
+        "jackhammer"
+      ],
+      "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": "keep jackhammer and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep car horn and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep fireworks and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and car horn and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and car horn and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove fireworks and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove car horn and jackhammer",
+      "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_227_rep3.json b/data/audio_mixtures_no_speech/train/city_3dist_227_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..9f8ee2171cd8a439d67a4a1af6dbe53d734ca846
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_227_rep3.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "city_3dist_227_rep3",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "helicopter",
+    "jackhammer"
+  ],
+  "audio_file": "city_3dist_227_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_198.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6918820861678006,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_062.mp3",
+      "origin_start": 288.2218140589569,
+      "origin_end": 298.2218140589569,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_198332.wav",
+      "origin_start": 18.18845804988662,
+      "origin_end": 22.017097505668936,
+      "mixture_start": 4.849065244132286,
+      "mixture_end": 8.67771730427106,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/fsd50k_346372.wav",
+      "origin_start": 21.102970521541952,
+      "origin_end": 24.227777777777778,
+      "mixture_start": 2.149669029818704,
+      "mixture_end": 5.2744917057604805,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_146254.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9980045351473923,
+      "mixture_start": 0.5081511366671528,
+      "mixture_end": 2.506155671814545,
+      "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 helicopter",
+      "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 helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and helicopter 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 helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and helicopter and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "helicopter",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep helicopter and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and jackhammer and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and helicopter and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove fireworks and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and jackhammer and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove helicopter and jackhammer",
+      "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_230_rep4.json b/data/audio_mixtures_no_speech/train/city_3dist_230_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..7189e8f1421c6bb30165e48df55b469eab11e32c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_230_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "city_3dist_230_rep4",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "fireworks",
+    "train_horn"
+  ],
+  "audio_file": "city_3dist_230_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_222.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8003854875283447,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/City/asmr_City_KkXLEHqzYZk_chunk_002.mp3",
+      "origin_start": 172.08798185941043,
+      "origin_end": 182.08798185941043,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_108511.wav",
+      "origin_start": 3.5496598639455783,
+      "origin_end": 6.382562358276644,
+      "mixture_start": 5.130988213030914,
+      "mixture_end": 7.963906998350867,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_46326.wav",
+      "origin_start": 1.7731065759637188,
+      "origin_end": 4.920408163265306,
+      "mixture_start": 0.827844153814633,
+      "mixture_end": 3.9751581245299477,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "train_horn",
+      "display_name": "train horn",
+      "original_path": "distractors/train/train_horn/fsd50k_72531.wav",
+      "origin_start": 5.408185941043084,
+      "origin_end": 7.575419501133787,
+      "mixture_start": 7.25346075271953,
+      "mixture_end": 9.420696205448545,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and 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": "remove applause and fireworks and train horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "train_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "fireworks",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "train_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and fireworks and train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "fireworks",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "train_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and train horn and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "train_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep applause and train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and fireworks and remove train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "fireworks"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and fireworks and keep train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and train horn and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove fireworks and train horn",
+      "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/city_3dist_245_rep2.json b/data/audio_mixtures_no_speech/train/city_3dist_245_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..796ed5b516e778b5af868b52d65be6ea531f2f34
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_245_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "city_3dist_245_rep2",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "alarm_clock",
+    "dog",
+    "jackhammer"
+  ],
+  "audio_file": "city_3dist_245_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p280/p280_096.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.316643990929705,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_055.mp3",
+      "origin_start": 266.33331065759637,
+      "origin_end": 276.33331065759637,
+      "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_1-67033-A-37.wav",
+      "origin_start": 0.5358956916099773,
+      "origin_end": 2.9485714285714284,
+      "mixture_start": 3.413952075027739,
+      "mixture_end": 5.826641705972316,
+      "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": 0.11631518188835245,
+      "mixture_end": 1.207653050369078,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386300.wav",
+      "origin_start": 1.5673469387755101,
+      "origin_end": 4.147823129251701,
+      "mixture_start": 1.2566578250259444,
+      "mixture_end": 3.8371501484041257,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "alarm_clock",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and dog and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "dog",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "dog",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "dog",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and dog and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "dog",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and jackhammer and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep alarm clock and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep alarm clock and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and dog and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and jackhammer and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove dog 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/city_3dist_251_rep1.json b/data/audio_mixtures_no_speech/train/city_3dist_251_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..c835acd7f705bd245ce0c43feb55f62e9c06536a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_251_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "city_3dist_251_rep1",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "footsteps",
+    "glass_breaking"
+  ],
+  "audio_file": "city_3dist_251_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_039.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.4325396825396823,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_066.mp3",
+      "origin_start": 100.24009070294784,
+      "origin_end": 110.24009070294784,
+      "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_453096_2.wav",
+      "origin_start": 10.075124716553288,
+      "origin_end": 13.964421768707483,
+      "mixture_start": 0.9862535798668199,
+      "mixture_end": 4.875558485603035,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_55064.wav",
+      "origin_start": 0.3509750566893424,
+      "origin_end": 3.012063492063492,
+      "mixture_start": 6.776564387939689,
+      "mixture_end": 9.437654457194238,
+      "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": 1.5568829750487454,
+      "mixture_end": 2.3811913650714214,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "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 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 baby cry and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry 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 baby cry and footsteps 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,
+        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 baby cry and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "footsteps",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "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 baby cry and footsteps and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "footsteps",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "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 baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep baby cry and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and footsteps and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove baby cry and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and glass breaking and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove footsteps and glass breaking",
+      "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/city_3dist_253_rep2.json b/data/audio_mixtures_no_speech/train/city_3dist_253_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..7c737a52a1f0dcbcb1d76c69049553d3ba0664b0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_253_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "city_3dist_253_rep2",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "car_alarm",
+    "helicopter"
+  ],
+  "audio_file": "city_3dist_253_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_248.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.329297052154195,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_070.mp3",
+      "origin_start": 287.5495238095238,
+      "origin_end": 297.5495238095238,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/val/applause/fsd50k_274636.wav",
+      "origin_start": 6.7142630385487525,
+      "origin_end": 10.695034013605442,
+      "mixture_start": 0.4617907644897429,
+      "mixture_end": 4.442579779511717,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_alarm",
+      "display_name": "car alarm",
+      "original_path": "distractors/train/car_alarm/fsd50k_365903.wav",
+      "origin_start": 0.13453514739229025,
+      "origin_end": 2.3617006802721088,
+      "mixture_start": 7.634597341093881,
+      "mixture_end": 9.861772056475292,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_3-150979-A-40.wav",
+      "origin_start": 1.6587301587301588,
+      "origin_end": 4.807074829931973,
+      "mixture_start": 3.8732148135383335,
+      "mixture_end": 7.021562731173183,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and car alarm and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "car_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "helicopter"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "car_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "car_alarm",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "helicopter"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and car alarm and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "car_alarm",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "helicopter"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "car_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and helicopter and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "helicopter"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and helicopter and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep applause and car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "car_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and car alarm and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove applause and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and helicopter 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/city_3dist_281_rep4.json b/data/audio_mixtures_no_speech/train/city_3dist_281_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..3a0ea2da572f96baac23ac186a06379388d14d20
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_281_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "city_3dist_281_rep4",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "ringtone",
+    "birds_chirping",
+    "glass_breaking"
+  ],
+  "audio_file": "city_3dist_281_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_370.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.477256235827664,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_031.mp3",
+      "origin_start": 154.01802721088436,
+      "origin_end": 164.01802721088436,
+      "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": 0.05165532879818594,
+      "origin_end": 2.109206349206349,
+      "mixture_start": 5.0114017268390825,
+      "mixture_end": 7.0689678222942725,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_47601.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1029478458049886,
+      "mixture_start": 0.5573399034149962,
+      "mixture_end": 1.6602877492199848,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_145558.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.5325170068027212,
+      "mixture_start": 4.348397699803406,
+      "mixture_end": 5.880914706606127,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove birds chirping and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and birds chirping and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "birds_chirping",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "birds_chirping",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "birds_chirping",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and birds chirping and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "birds_chirping",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep birds chirping and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and glass breaking and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep ringtone and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove ringtone and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove ringtone and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove birds chirping and glass breaking",
+      "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_3dist_282_rep4.json b/data/audio_mixtures_no_speech/train/city_3dist_282_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..f29d0a3c13a966a26d1367833e579eb37954d80d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_282_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "city_3dist_282_rep4",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "dog",
+    "siren"
+  ],
+  "audio_file": "city_3dist_282_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_030.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.456893424036281,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/City/asmr_City_KkXLEHqzYZk_chunk_010.mp3",
+      "origin_start": 42.97648526077098,
+      "origin_end": 52.97648526077098,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_19115.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.3351473922902495,
+      "mixture_start": 2.5518664213154834,
+      "mixture_end": 3.8870138136057326,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/esc-50_1-30344-A-0.wav",
+      "origin_start": 0.7479365079365079,
+      "origin_end": 3.33702947845805,
+      "mixture_start": 3.143748703681616,
+      "mixture_end": 5.732859212927991,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_201611.wav",
+      "origin_start": 0.5167573696145125,
+      "origin_end": 3.741768707482993,
+      "mixture_start": 4.886189646414767,
+      "mixture_end": 8.111217360471532,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "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 cough and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough 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 cough and dog and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "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 cough and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "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 cough and dog and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "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 cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and siren and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep cough and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and dog and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and siren and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove dog and siren",
+      "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_296_rep3.json b/data/audio_mixtures_no_speech/train/city_3dist_296_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..c4dd7136b0e80c004b8ca2a429a5321d2e2aedb7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/city_3dist_296_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "city_3dist_296_rep3",
+  "scene_name": "City",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "car_horn",
+    "hammer"
+  ],
+  "audio_file": "city_3dist_296_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_417.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.6738095238095236,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/City/asmr_City_KkXLEHqzYZk_chunk_035.mp3",
+      "origin_start": 141.12272108843538,
+      "origin_end": 151.12272108843538,
+      "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": 1.8645351473922902,
+      "origin_end": 4.921043083900226,
+      "mixture_start": 0.14422740180933583,
+      "mixture_end": 3.2007531461948853,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_21687.wav",
+      "origin_start": 0.03340136054421769,
+      "origin_end": 3.6160090702947847,
+      "mixture_start": 5.048023078361418,
+      "mixture_end": 8.630632372062353,
+      "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": 4.403573965560501,
+      "mixture_end": 4.926022945152337,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and car horn and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "car_horn",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "car_horn",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "car_horn",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and car horn and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "car_horn",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and hammer and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and hammer and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep car alarm and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove car alarm and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove car alarm and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove car horn 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/coffee_shop_1dist_003_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_003_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..096f534860dd47a2d5dd4e445c4015d325ef856a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_003_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "coffee_shop_1dist_003_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "applause"
+  ],
+  "audio_file": "coffee_shop_1dist_003_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p261/p261_402.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.650453514739229,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_044.mp3",
+      "origin_start": 111.72421768707483,
+      "origin_end": 121.72421768707483,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_72507.wav",
+      "origin_start": 0.0816780045351474,
+      "origin_end": 3.7572108843537415,
+      "mixture_start": 4.70599834845562,
+      "mixture_end": 8.381534977859722,
+      "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/coffee_shop_1dist_079_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_079_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..c9e2bace6e9d2543fbd61c3d5559a2cfdd4b52af
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_1dist_079_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "coffee_shop_1dist_079_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 1,
+  "distractors": [
+    "hammer"
+  ],
+  "audio_file": "coffee_shop_1dist_079_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_067.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.07718820861678,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_021.mp3",
+      "origin_start": 43.687551020408165,
+      "origin_end": 53.687551020408165,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/val/hammer/fsd50k_262000.wav",
+      "origin_start": 5.3907482993197275,
+      "origin_end": 8.45111111111111,
+      "mixture_start": 3.0122491524419854,
+      "mixture_end": 6.072619905040577,
+      "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_2dist_135_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_135_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..d82212c969e2178e7f345b412e6ba8a94fc101ea
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_135_rep2.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "coffee_shop_2dist_135_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "glass_breaking"
+  ],
+  "audio_file": "coffee_shop_2dist_135_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_415.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.7127891156462587,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_047.mp3",
+      "origin_start": 114.17918367346938,
+      "origin_end": 124.17918367346938,
+      "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": 0.1879138321995465,
+      "origin_end": 2.26578231292517,
+      "mixture_start": 5.991708264160115,
+      "mixture_end": 8.069583508079088,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_164539.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9272562358276644,
+      "mixture_start": 1.4453369531364757,
+      "mixture_end": 3.37259318896414,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove glass breaking",
+      "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_137_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_137_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..29d58c82c5c4baefd0ae79e3dc7e3ab834cf8baa
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_137_rep2.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "coffee_shop_2dist_137_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "gunshot"
+  ],
+  "audio_file": "coffee_shop_2dist_137_rep2.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/val/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_048.mp3",
+      "origin_start": 187.9230612244898,
+      "origin_end": 197.9230612244898,
+      "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": 1.644421768707483,
+      "origin_end": 5.597006802721088,
+      "mixture_start": 3.4425709315091653,
+      "mixture_end": 7.39516588378452,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_67575.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5108390022675737,
+      "mixture_start": 4.743868240113394,
+      "mixture_end": 5.2547072423809675,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove gunshot",
+      "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_141_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_141_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..1a3131b5b54a9716a936163ec7a379c76633c7fc
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_141_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "coffee_shop_2dist_141_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "helicopter",
+    "hammer"
+  ],
+  "audio_file": "coffee_shop_2dist_141_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_053.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.5175510204081633,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_065.mp3",
+      "origin_start": 286.32235827664397,
+      "origin_end": 296.32235827664397,
+      "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": 0.2054875283446712,
+      "origin_end": 2.8464172335600906,
+      "mixture_start": 4.707270587359675,
+      "mixture_end": 7.34820662185916,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_419927.wav",
+      "origin_start": 3.0575056689342404,
+      "origin_end": 6.337732426303855,
+      "mixture_start": 0.2604872467192701,
+      "mixture_end": 3.540717707900324,
+      "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": "remove helicopter and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove hammer",
+      "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_2dist_148_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_148_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..b238ee93f3759895e72cd1aad6d3c7c87e93059a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_148_rep4.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "coffee_shop_2dist_148_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "siren"
+  ],
+  "audio_file": "coffee_shop_2dist_148_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p268/p268_018.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.872698412698413,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_032.mp3",
+      "origin_start": 160.2801814058957,
+      "origin_end": 170.2801814058957,
+      "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": 7.159274376417233,
+      "origin_end": 9.22687074829932,
+      "mixture_start": 2.7332266453010883,
+      "mixture_end": 4.800828181791969,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_201945.wav",
+      "origin_start": 0.4059637188208617,
+      "origin_end": 2.4328344671201814,
+      "mixture_start": 4.961625300575086,
+      "mixture_end": 6.988512959236543,
+      "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/coffee_shop_2dist_150_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_150_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..fc77322acc62aa73f2a08002b5332ba665688287
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_150_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "coffee_shop_2dist_150_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "dog",
+    "gunshot"
+  ],
+  "audio_file": "coffee_shop_2dist_150_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p265/p265_111.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.248503401360544,
+      "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": 234.00278911564627,
+      "origin_end": 244.00278911564627,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_270586.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9736961451247166,
+      "mixture_start": 1.3667619780579083,
+      "mixture_end": 3.340458123182625,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_396276.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6153061224489796,
+      "mixture_start": 0.8056832444817842,
+      "mixture_end": 1.421012042667725,
+      "channel": 3
+    }
+  },
+  "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 dog and gunshot",
+      "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 dog and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot 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_167_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_167_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..80535d13b4e7f9248b22879e5cdf8882c51ea5b6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_167_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "coffee_shop_2dist_167_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "car_alarm"
+  ],
+  "audio_file": "coffee_shop_2dist_167_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_407.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.991360544217687,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_079.mp3",
+      "origin_start": 86.76353741496598,
+      "origin_end": 96.76353741496598,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_381362.wav",
+      "origin_start": 4.9307709750566895,
+      "origin_end": 7.634761904761905,
+      "mixture_start": 1.9091430559570706,
+      "mixture_end": 4.613147520910995,
+      "channel": 2
+    },
+    "distractor_2": {
+      "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": 6.301633282348918,
+      "mixture_end": 7.238254597541662,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and car alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "car_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "car_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm 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_192_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_192_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..c0d517f139fcc7c3c31727207dc158caffc87053
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_2dist_192_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "coffee_shop_2dist_192_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 2,
+  "distractors": [
+    "boom",
+    "footsteps"
+  ],
+  "audio_file": "coffee_shop_2dist_192_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_272.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.3330839002267574,
+      "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": 205.9339909297052,
+      "origin_end": 215.9339909297052,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_270882.wav",
+      "origin_start": 1.9898185941043083,
+      "origin_end": 4.2450566893424035,
+      "mixture_start": 7.714107436180936,
+      "mixture_end": 9.969360251560232,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_324584.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9039229024943312,
+      "mixture_start": 2.1455892647764725,
+      "mixture_end": 4.049512167270803,
+      "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/coffee_shop_3dist_204_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_204_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..58697e0a9eaf9e86e1c2ab7898cd86659792984b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_204_rep4.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "coffee_shop_3dist_204_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "ringtone",
+    "footsteps"
+  ],
+  "audio_file": "coffee_shop_3dist_204_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p243/p243_140.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.459047619047619,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_015.mp3",
+      "origin_start": 203.45746031746032,
+      "origin_end": 213.45746031746032,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_189191.wav",
+      "origin_start": 14.289523809523809,
+      "origin_end": 16.38124716553288,
+      "mixture_start": 2.6654889261467054,
+      "mixture_end": 4.757224261734599,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167549.wav",
+      "origin_start": 3.779501133786848,
+      "origin_end": 6.004671201814059,
+      "mixture_start": 6.9109118163862915,
+      "mixture_end": 9.136102849801285,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_364443.wav",
+      "origin_start": 4.440770975056689,
+      "origin_end": 6.496734693877551,
+      "mixture_start": 4.080084394222459,
+      "mixture_end": 6.13606442086005,
+      "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 footsteps",
+      "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 footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "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"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "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 footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        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": "remove applause and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove footsteps",
+      "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": "remove ringtone and keep applause and footsteps",
+      "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": "remove applause and ringtone and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and footsteps and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove ringtone and footsteps",
+      "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_207_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_207_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..42a7b4b38a2764d52c7a05726aad92a83f51f0da
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_207_rep3.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "coffee_shop_3dist_207_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "engine",
+    "ringtone",
+    "baby_cry"
+  ],
+  "audio_file": "coffee_shop_3dist_207_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p278/p278_300.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.079569160997733,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uiMXGIG_DQo_chunk_042.mp3",
+      "origin_start": 17.408843537414967,
+      "origin_end": 27.408843537414967,
+      "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": 2.3891156462585035,
+      "origin_end": 4.879773242630385,
+      "mixture_start": 5.348740503517332,
+      "mixture_end": 7.839407700546671,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167533.wav",
+      "origin_start": 0.468843537414966,
+      "origin_end": 2.5114739229024945,
+      "mixture_start": 1.4651670173849656,
+      "mixture_end": 3.5078141599890733,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_179832.wav",
+      "origin_start": 0.8993197278911564,
+      "origin_end": 3.0175056689342403,
+      "mixture_start": 7.109291001743955,
+      "mixture_end": 9.227477739289824,
+      "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 ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and baby cry",
+      "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 engine and ringtone and baby cry",
+      "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 ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "baby_cry"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and ringtone and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "ringtone",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep ringtone and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "baby_cry"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep engine and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and ringtone and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove engine and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and baby cry and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and baby cry 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/coffee_shop_3dist_212_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_212_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..88c71be95907e43f4d59c7eb8867bc170f4fe241
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_212_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "coffee_shop_3dist_212_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "drill",
+    "alarm_clock",
+    "hammer"
+  ],
+  "audio_file": "coffee_shop_3dist_212_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_100.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.201496598639456,
+      "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": 287.91068027210883,
+      "origin_end": 297.91068027210883,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_29722.wav",
+      "origin_start": 10.896666666666667,
+      "origin_end": 13.213310657596372,
+      "mixture_start": 5.185841398584098,
+      "mixture_end": 7.502488380323239,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_128138.wav",
+      "origin_start": 2.9068480725623584,
+      "origin_end": 4.969138321995465,
+      "mixture_start": 6.956094201977874,
+      "mixture_end": 9.018396365944483,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_212390.wav",
+      "origin_start": 9.014625850340137,
+      "origin_end": 11.530907029478458,
+      "mixture_start": 1.9767285366609808,
+      "mixture_end": 4.493018317405156,
+      "channel": 4
+    }
+  },
+  "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 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 drill and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and 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": "remove drill and alarm clock 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 alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and alarm clock and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "alarm_clock",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and hammer and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and hammer and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep drill and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and alarm clock and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove drill and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and hammer 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/coffee_shop_3dist_221_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_221_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..dc224131b0f531e96ffd2224763a9cd62e441d2a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_221_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "coffee_shop_3dist_221_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "fire_alarm",
+    "glass_breaking",
+    "hammer"
+  ],
+  "audio_file": "coffee_shop_3dist_221_rep4.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/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_011.mp3",
+      "origin_start": 61.81242630385488,
+      "origin_end": 71.81242630385488,
+      "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": 3.4987981859410433,
+      "origin_end": 5.920657596371882,
+      "mixture_start": 3.6919258886039095,
+      "mixture_end": 6.113807918279498,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_179228.wav",
+      "origin_start": 2.5958049886621315,
+      "origin_end": 5.707324263038549,
+      "mixture_start": 0.8692052783139326,
+      "mixture_end": 3.9807433046973344,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_378683.wav",
+      "origin_start": 0.03691609977324263,
+      "origin_end": 2.0417233560090704,
+      "mixture_start": 5.792520691608429,
+      "mixture_end": 7.797350113702908,
+      "channel": 4
+    }
+  },
+  "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 hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fire alarm 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": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and glass breaking and hammer",
+      "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 hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking",
+        "hammer"
+      ],
+      "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": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and glass breaking and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep glass breaking and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and hammer and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep fire alarm and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and glass breaking and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and hammer and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove glass breaking and hammer",
+      "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_3dist_243_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_243_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..4554dbc21bfeeef1db8a4c2efae3212f64eeeba3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_243_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "coffee_shop_3dist_243_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "jackhammer",
+    "slam"
+  ],
+  "audio_file": "coffee_shop_3dist_243_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p267/p267_053.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.7150566893424037,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_037.mp3",
+      "origin_start": 76.95340136054422,
+      "origin_end": 86.95340136054422,
+      "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_215821.wav",
+      "origin_start": 2.5545804988662133,
+      "origin_end": 6.363378684807256,
+      "mixture_start": 2.9345651599830163,
+      "mixture_end": 6.743384579128637,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386330.wav",
+      "origin_start": 0.10868480725623583,
+      "origin_end": 2.238843537414966,
+      "mixture_start": 7.653084110691658,
+      "mixture_end": 9.783245809085859,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_211933.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9520181405895691,
+      "mixture_start": 0.373551865590432,
+      "mixture_end": 1.325570006180001,
+      "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_246_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_246_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..10f5f2308c378684a0b0f28ce84de7c51963ddf5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_246_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "coffee_shop_3dist_246_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "engine",
+    "baby_cry",
+    "fire_alarm"
+  ],
+  "audio_file": "coffee_shop_3dist_246_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p282/p282_180.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.9692063492063494,
+      "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": 67.48564625850341,
+      "origin_end": 77.48564625850341,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/esc-50_3-154758-A-44.wav",
+      "origin_start": 1.8913832199546485,
+      "origin_end": 4.361451247165533,
+      "mixture_start": 3.410813138060277,
+      "mixture_end": 5.880897464657172,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_102431.wav",
+      "origin_start": 2.479206349206349,
+      "origin_end": 5.14374149659864,
+      "mixture_start": 0.536763450901708,
+      "mixture_end": 3.201306953622671,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_124734.wav",
+      "origin_start": 2.664580498866213,
+      "origin_end": 5.394104308390022,
+      "mixture_start": 6.694729967568619,
+      "mixture_end": 9.424257761249137,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "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 engine and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and 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": "remove engine and baby cry 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,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "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 engine and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "baby_cry",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and baby cry and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "baby_cry",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and fire alarm and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep engine and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and baby cry and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove engine and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and fire alarm and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and remove baby cry and fire alarm",
+      "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_3dist_253_rep4.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_253_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..dd94a73687b0c198c0f7e044a2c52193776c91e4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_253_rep4.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "coffee_shop_3dist_253_rep4",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "car_horn",
+    "footsteps"
+  ],
+  "audio_file": "coffee_shop_3dist_253_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p264/p264_116.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2880725623582765,
+      "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": 156.2978231292517,
+      "origin_end": 166.2978231292517,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_349827.wav",
+      "origin_start": 0.7957142857142857,
+      "origin_end": 3.0316780045351472,
+      "mixture_start": 4.21039842056578,
+      "mixture_end": 6.446367337467526,
+      "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": 6.874446339433584,
+      "mixture_end": 7.54782502424084,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/esc-50_1-155858-B-25.wav",
+      "origin_start": 0.22555555555555556,
+      "origin_end": 2.808526077097506,
+      "mixture_start": 2.180465580363862,
+      "mixture_end": 4.763442205507184,
+      "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": "keep footsteps and remove fireworks",
+      "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": "remove car horn and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep car horn",
+      "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": "remove car horn and keep fireworks and footsteps",
+      "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": "keep footsteps and remove fireworks and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove fireworks and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove car horn and footsteps",
+      "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_3dist_262_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_262_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..5b0c0b41d1233e0875540a05a30a2f1e4b5bfa89
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_262_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "coffee_shop_3dist_262_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "cough",
+    "helicopter"
+  ],
+  "audio_file": "coffee_shop_3dist_262_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p265/p265_229.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3092290249433107,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_061.mp3",
+      "origin_start": 37.18734693877551,
+      "origin_end": 47.18734693877551,
+      "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": 3.601496598639456,
+      "origin_end": 7.430544217687075,
+      "mixture_start": 0.8802194384981274,
+      "mixture_end": 4.7092827530996235,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/esc-50_4-177835-A-24.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8243083900226758,
+      "mixture_start": 2.9720735065505473,
+      "mixture_end": 3.796381896573223,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/val/helicopter/esc-50_4-175000-A-40.wav",
+      "origin_start": 1.5291609977324263,
+      "origin_end": 4.0758049886621315,
+      "mixture_start": 6.183800029828911,
+      "mixture_end": 8.730449571642684,
+      "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 helicopter",
+      "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 helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cough and helicopter",
+      "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 helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter"
+      ],
+      "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 helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cough and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and helicopter and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "helicopter"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep cellphone buzz vibrating alert and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter 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": "remove cellphone buzz vibrating alert and cough and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and helicopter and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove cough and helicopter",
+      "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_263_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_263_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..8e37ac6a0de7186beb31e5e77b6e9c778200d731
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_263_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "coffee_shop_3dist_263_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "helicopter",
+    "hammer"
+  ],
+  "audio_file": "coffee_shop_3dist_263_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p268/p268_054.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.9689115646258504,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_059.mp3",
+      "origin_start": 8.591065759637187,
+      "origin_end": 18.59106575963719,
+      "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_256160.wav",
+      "origin_start": 9.217052154195011,
+      "origin_end": 11.248888888888889,
+      "mixture_start": 3.066022922446703,
+      "mixture_end": 5.097876167087618,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_3-68630-A-40.wav",
+      "origin_start": 2.7056009070294786,
+      "origin_end": 4.841972789115646,
+      "mixture_start": 5.992228051514468,
+      "mixture_end": 8.128607175565747,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_182821.wav",
+      "origin_start": 4.217414965986395,
+      "origin_end": 6.957936507936508,
+      "mixture_start": 0.3834292707732383,
+      "mixture_end": 3.1239648057131877,
+      "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_264_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_264_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..2d2c48a6f04a2b7606117d7f70a931de27d88579
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_264_rep3.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "coffee_shop_3dist_264_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "helicopter",
+    "sneeze",
+    "jackhammer"
+  ],
+  "audio_file": "coffee_shop_3dist_264_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p262/p262_092.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.77718820861678,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_uU_RxnJOdMQ_chunk_040.mp3",
+      "origin_start": 204.11419501133787,
+      "origin_end": 214.11419501133787,
+      "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-B-40.wav",
+      "origin_start": 0.31378684807256235,
+      "origin_end": 4.249727891156462,
+      "mixture_start": 4.899657457964933,
+      "mixture_end": 8.835598636563757,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_276615.wav",
+      "origin_start": 11.71421768707483,
+      "origin_end": 15.66671201814059,
+      "mixture_start": 1.8895905116082035,
+      "mixture_end": 5.84210137385721,
+      "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": 8.276979508714458,
+      "mixture_end": 8.787818510982031,
+      "channel": 4
+    }
+  },
+  "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 jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and jackhammer",
+      "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 helicopter and sneeze and jackhammer",
+      "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 jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and sneeze and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "sneeze",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and jackhammer and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and jackhammer and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep helicopter and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove helicopter and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove helicopter and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove sneeze and jackhammer",
+      "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_277_rep1.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_277_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..e6eb38969f458a81b904b51440931cbd170d24a5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_277_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "coffee_shop_3dist_277_rep1",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "car_horn",
+    "glass_breaking"
+  ],
+  "audio_file": "coffee_shop_3dist_277_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_294.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.1190249433106576,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Coffee_Shop/asmr_Coffee_Shop_qU8o3_T5y5M_chunk_049.mp3",
+      "origin_start": 286.7384126984127,
+      "origin_end": 296.7384126984127,
+      "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": 1.6228571428571428,
+      "origin_end": 4.157641723356009,
+      "mixture_start": 5.5298334963893945,
+      "mixture_end": 8.064626749989676,
+      "channel": 2
+    },
+    "distractor_2": {
+      "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": 0.11236702424544134,
+      "mixture_end": 0.9715053462409061,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_390722.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1261678004535147,
+      "mixture_start": 3.2814353803236713,
+      "mixture_end": 4.407603180777186,
+      "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 car horn",
+      "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 car horn",
+      "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 car horn and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and car horn 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 car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "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 car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "car_horn",
+        "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 car horn and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and car horn and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "car_horn",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "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 car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove car horn",
+      "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 car horn and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep car horn and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and glass breaking and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep cough and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove cough and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove cough and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn 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/coffee_shop_3dist_283_rep2.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_283_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..14e73dd3d7bd37e82957746e2c36f62fb37a1a85
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_283_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "coffee_shop_3dist_283_rep2",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "engine",
+    "glass_breaking"
+  ],
+  "audio_file": "coffee_shop_3dist_283_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_267.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.650204081632653,
+      "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": 110.22319727891157,
+      "origin_end": 120.22319727891157,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/esc-50_4-169726-A-24.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9752380952380952,
+      "mixture_start": 2.8682722196529484,
+      "mixture_end": 3.8435103148910437,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/fsd50k_72828.wav",
+      "origin_start": 5.60172335600907,
+      "origin_end": 9.054285714285715,
+      "mixture_start": 0.5789859436725108,
+      "mixture_end": 4.031561094507274,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_326422.wav",
+      "origin_start": 0.04589569160997732,
+      "origin_end": 2.8740816326530614,
+      "mixture_start": 3.179463233504542,
+      "mixture_end": 6.007661963362125,
+      "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 engine",
+      "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 engine",
+      "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 engine and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and engine 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 engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "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 engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "engine",
+        "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 engine and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and engine and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "engine",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "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": "remove engine and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine 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 engine and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and glass breaking and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and glass breaking and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep cough and engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and engine and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove cough and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove engine and glass breaking",
+      "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_292_rep3.json b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_292_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..9e3448cd0c52ab23e495f13d75625ad819dc5fdb
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/coffee_shop_3dist_292_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "coffee_shop_3dist_292_rep3",
+  "scene_name": "Coffee Shop",
+  "distractor_count": 3,
+  "distractors": [
+    "gunshot",
+    "hammer",
+    "siren"
+  ],
+  "audio_file": "coffee_shop_3dist_292_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p265/p265_263.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.734671201814059,
+      "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": 88.66700680272109,
+      "origin_end": 98.66700680272109,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_348666.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9636281179138322,
+      "mixture_start": 8.119796054670546,
+      "mixture_end": 9.083424172584378,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_70314.wav",
+      "origin_start": 2.3659637188208618,
+      "origin_end": 5.671473922902495,
+      "mixture_start": 3.983457073154417,
+      "mixture_end": 7.288971363327196,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_3-62878-B-42.wav",
+      "origin_start": 0.2671655328798186,
+      "origin_end": 2.370181405895692,
+      "mixture_start": 0.8741987446898373,
+      "mixture_end": 2.977220302930347,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove hammer and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and hammer 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,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and hammer and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove siren and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and siren and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep gunshot and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep gunshot and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and hammer and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and siren and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove hammer and siren",
+      "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_1dist_004_rep2.json b/data/audio_mixtures_no_speech/train/forest_1dist_004_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..a44eb17db8e9c8b29aaebc71ac70a608e06b5ab6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_004_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_004_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "cat"
+  ],
+  "audio_file": "forest_1dist_004_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_091.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.521451247165533,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_040.mp3",
+      "origin_start": 161.4030612244898,
+      "origin_end": 171.4030612244898,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/esc-50_3-95698-A-5.wav",
+      "origin_start": 0.3987981859410431,
+      "origin_end": 3.0914285714285716,
+      "mixture_start": 0.2025929959686223,
+      "mixture_end": 2.895231474048342,
+      "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_rep4.json b/data/audio_mixtures_no_speech/train/forest_1dist_006_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..eadbc3e6f72a6fc704647fa3b1a31fdc9f39f606
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_006_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_006_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "fireworks"
+  ],
+  "audio_file": "forest_1dist_006_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_011.wav",
+      "origin_start": 0.0,
+      "origin_end": 7.510521541950113,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_035.mp3",
+      "origin_start": 76.43707482993197,
+      "origin_end": 86.43707482993197,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_46327.wav",
+      "origin_start": 0.11170068027210885,
+      "origin_end": 2.144149659863946,
+      "mixture_start": 4.003077259262166,
+      "mixture_end": 6.035546107251392,
+      "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_007_rep3.json b/data/audio_mixtures_no_speech/train/forest_1dist_007_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..64f2a3cb714f62d7db84de7dea5562a91f551e67
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_007_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_007_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "forest_1dist_007_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_224.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8870068027210882,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_025.mp3",
+      "origin_start": 76.89256235827665,
+      "origin_end": 86.89256235827665,
+      "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_170749_1.wav",
+      "origin_start": 2.723514739229025,
+      "origin_end": 5.025034013605442,
+      "mixture_start": 6.167992448174509,
+      "mixture_end": 8.469526798035862,
+      "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_1dist_010_rep2.json b/data/audio_mixtures_no_speech/train/forest_1dist_010_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..8310b6f901c7b9510a04f28483b1ebfb7f85b6c7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_010_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "forest_1dist_010_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "car_alarm"
+  ],
+  "audio_file": "forest_1dist_010_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p244/p244_194.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3929478458049886,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Forest/asmr_Forest_29XymHesxa0_chunk_013.mp3",
+      "origin_start": 54.526598639455784,
+      "origin_end": 64.52659863945578,
+      "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": 0.3994331065759637,
+      "origin_end": 4.308299319727891,
+      "mixture_start": 5.437534616941943,
+      "mixture_end": 9.346421288199732,
+      "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_015_rep2.json b/data/audio_mixtures_no_speech/train/forest_1dist_015_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..c8b6d639046ceb87b1012188b3b97a536573b80d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_015_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "forest_1dist_015_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "forest_1dist_015_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_427.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8626984126984127,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_002.mp3",
+      "origin_start": 84.81077097505668,
+      "origin_end": 94.81077097505668,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_117564.wav",
+      "origin_start": 2.135374149659864,
+      "origin_end": 4.460748299319728,
+      "mixture_start": 3.4287929357716505,
+      "mixture_end": 5.754176094442908,
+      "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/forest_1dist_018_rep4.json b/data/audio_mixtures_no_speech/train/forest_1dist_018_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..3093ec7846bd777eec8863fa4b422414fb571ffb
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_018_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "forest_1dist_018_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "footsteps"
+  ],
+  "audio_file": "forest_1dist_018_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p285/p285_044.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3931972789115648,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_025.mp3",
+      "origin_start": 101.60530612244898,
+      "origin_end": 111.60530612244898,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_157961.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0913378684807256,
+      "mixture_start": 3.450610401524599,
+      "mixture_end": 4.541948270005324,
+      "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_037_rep3.json b/data/audio_mixtures_no_speech/train/forest_1dist_037_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..84b85783595d7c22aa3f129f1d195512551fb0e9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_037_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "forest_1dist_037_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "car_horn"
+  ],
+  "audio_file": "forest_1dist_037_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_070.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6482766439909295,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_019.mp3",
+      "origin_start": 205.71054421768707,
+      "origin_end": 215.71054421768707,
+      "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_4-176631-A-43.wav",
+      "origin_start": 1.8942857142857144,
+      "origin_end": 4.063106575963719,
+      "mixture_start": 5.60207710983081,
+      "mixture_end": 7.770905136826592,
+      "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_041_rep3.json b/data/audio_mixtures_no_speech/train/forest_1dist_041_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..e8db5e85587a46ffb759252e43b0478aa38181c9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_041_rep3.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_041_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "drill"
+  ],
+  "audio_file": "forest_1dist_041_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_303.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.031609977324263,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_59fHDWDhzkY_chunk_002.mp3",
+      "origin_start": 100.60285714285715,
+      "origin_end": 110.60285714285715,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_71082.wav",
+      "origin_start": 0.6641269841269841,
+      "origin_end": 3.4146938775510205,
+      "mixture_start": 2.032673780620666,
+      "mixture_end": 4.783250287063877,
+      "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/forest_1dist_071_rep1.json b/data/audio_mixtures_no_speech/train/forest_1dist_071_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..17f4ccc18b4b8d1bc6d9abc8865c5939a0e907da
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_071_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_071_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "cat"
+  ],
+  "audio_file": "forest_1dist_071_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p281/p281_028.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.671156462585034,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_016.mp3",
+      "origin_start": 193.19172335600908,
+      "origin_end": 203.19172335600908,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/fsd50k_62217.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0913378684807256,
+      "mixture_start": 2.6037204565852643,
+      "mixture_end": 3.6950583250659896,
+      "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_080_rep4.json b/data/audio_mixtures_no_speech/train/forest_1dist_080_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..ceaae8caeef427a7d7bdf1bd0e1526d71a452b00
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_080_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_080_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "applause"
+  ],
+  "audio_file": "forest_1dist_080_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_338.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.013877551020408,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_040.mp3",
+      "origin_start": 134.05458049886622,
+      "origin_end": 144.05458049886622,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_198938.wav",
+      "origin_start": 3.6526303854875284,
+      "origin_end": 6.877369614512472,
+      "mixture_start": 5.867508611311772,
+      "mixture_end": 9.092265096187063,
+      "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_087_rep4.json b/data/audio_mixtures_no_speech/train/forest_1dist_087_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..0940f57ebf7f6b805616ac37427a37c726bb7c9e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_087_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "forest_1dist_087_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "forest_1dist_087_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_142.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3503401360544216,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_021.mp3",
+      "origin_start": 79.90514739229025,
+      "origin_end": 89.90514739229025,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_128459.wav",
+      "origin_start": 14.394716553287981,
+      "origin_end": 16.76108843537415,
+      "mixture_start": 5.993008345237682,
+      "mixture_end": 8.359390910867715,
+      "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/forest_1dist_093_rep4.json b/data/audio_mixtures_no_speech/train/forest_1dist_093_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..cca0d4986f3456087bb5652fb8e6f88ef2343107
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_1dist_093_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "forest_1dist_093_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 1,
+  "distractors": [
+    "cricket"
+  ],
+  "audio_file": "forest_1dist_093_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_365.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.866780045351474,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_008.mp3",
+      "origin_start": 78.49975056689343,
+      "origin_end": 88.49975056689343,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_89354.wav",
+      "origin_start": 0.9468027210884353,
+      "origin_end": 3.1758503401360545,
+      "mixture_start": 4.980683684049237,
+      "mixture_end": 7.209741512437331,
+      "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_2dist_154_rep2.json b/data/audio_mixtures_no_speech/train/forest_2dist_154_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..5de2141c3c4838761f20aebec6464acec056e29e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_154_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "forest_2dist_154_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "birds_chirping"
+  ],
+  "audio_file": "forest_2dist_154_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_375.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0482539682539684,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_023.mp3",
+      "origin_start": 115.15975056689342,
+      "origin_end": 125.15975056689342,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_152367.wav",
+      "origin_start": 0.6267573696145124,
+      "origin_end": 2.833401360544218,
+      "mixture_start": 2.2188255176876948,
+      "mixture_end": 4.425473519301606,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/val/birds_chirping/esc-50_4-159609-A-14.wav",
+      "origin_start": 0.09555555555555556,
+      "origin_end": 2.4254648526077096,
+      "mixture_start": 4.506177711837413,
+      "mixture_end": 6.836100169839211,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove birds chirping",
+      "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_155_rep3.json b/data/audio_mixtures_no_speech/train/forest_2dist_155_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..f7ad0198d107a2cef9e3ad217ea8923296aaeca2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_155_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "forest_2dist_155_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "helicopter",
+    "car_horn"
+  ],
+  "audio_file": "forest_2dist_155_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_255.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.606417233560091,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_004.mp3",
+      "origin_start": 271.65700680272107,
+      "origin_end": 281.65700680272107,
+      "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": 0.3935374149659864,
+      "origin_end": 2.9821541950113377,
+      "mixture_start": 3.4285819066878074,
+      "mixture_end": 6.017205847615395,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_403457.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.603718820861678,
+      "mixture_start": 0.7541486950039541,
+      "mixture_end": 1.3578675158656321,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "helicopter",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove helicopter and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove car horn",
+      "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_2dist_159_rep2.json b/data/audio_mixtures_no_speech/train/forest_2dist_159_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..d2949b65280400b36821f6b3d1cfe1ccf2ce1a49
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_159_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "forest_2dist_159_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "engine"
+  ],
+  "audio_file": "forest_2dist_159_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_301.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.272585034013606,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_002.mp3",
+      "origin_start": 281.4799546485261,
+      "origin_end": 291.4799546485261,
+      "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_71234.wav",
+      "origin_start": 3.4541950113378683,
+      "origin_end": 6.139002267573696,
+      "mixture_start": 2.3353590194604763,
+      "mixture_end": 5.020167892735013,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/fsd50k_258052.wav",
+      "origin_start": 0.7797278911564626,
+      "origin_end": 3.083922902494331,
+      "mixture_start": 4.962984940719762,
+      "mixture_end": 7.267190494876776,
+      "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": "keep engine and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine 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_167_rep1.json b/data/audio_mixtures_no_speech/train/forest_2dist_167_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..e02c29f7864b393e2fe188e5b0a293dd4031fbf2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_167_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "forest_2dist_167_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "birds_chirping",
+    "cricket"
+  ],
+  "audio_file": "forest_2dist_167_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p229/p229_278.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.71718820861678,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_005.mp3",
+      "origin_start": 160.06739229024944,
+      "origin_end": 170.06739229024944,
+      "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_121973.wav",
+      "origin_start": 0.6452154195011338,
+      "origin_end": 2.6808616780045353,
+      "mixture_start": 1.061414249261352,
+      "mixture_end": 3.0970616604866326,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/esc-50_2-110613-A-13.wav",
+      "origin_start": 1.2586167800453514,
+      "origin_end": 4.075215419501133,
+      "mixture_start": 7.049744114153887,
+      "mixture_end": 9.866358787672045,
+      "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 cricket",
+      "command_type": "remove_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and cricket",
+      "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 cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep birds chirping",
+      "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_169_rep1.json b/data/audio_mixtures_no_speech/train/forest_2dist_169_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..8e7a71f12179e9ce885539d0c9870e6f66c5060b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_169_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "forest_2dist_169_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "jackhammer"
+  ],
+  "audio_file": "forest_2dist_169_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p270/p270_222.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.5613832199546485,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_016.mp3",
+      "origin_start": 190.61809523809524,
+      "origin_end": 200.61809523809524,
+      "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": 2.9305668934240363,
+      "origin_end": 6.07437641723356,
+      "mixture_start": 1.9038816311204367,
+      "mixture_end": 5.047702420673499,
+      "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": 2.239928224985218,
+      "mixture_end": 3.1222865016292087,
+      "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 jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and jackhammer",
+      "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 jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer 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_2dist_170_rep4.json b/data/audio_mixtures_no_speech/train/forest_2dist_170_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..10d2855fe919fabed42a4725e0c126c8e96ae0cc
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_170_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "forest_2dist_170_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "siren"
+  ],
+  "audio_file": "forest_2dist_170_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_204.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8863038548752833,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_037.mp3",
+      "origin_start": 131.13643990929705,
+      "origin_end": 141.13643990929705,
+      "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": 1.3769511569810935,
+      "mixture_end": 2.3173593202464,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/val/siren/fsd50k_108192.wav",
+      "origin_start": 7.157369614512471,
+      "origin_end": 9.519410430839002,
+      "mixture_start": 6.076787340840496,
+      "mixture_end": 8.438832545128204,
+      "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_171_rep2.json b/data/audio_mixtures_no_speech/train/forest_2dist_171_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..2a135e983d2ef5ad05a7d6c22c68839201b5cc4e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_171_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "forest_2dist_171_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "jackhammer"
+  ],
+  "audio_file": "forest_2dist_171_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_048.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.480884353741496,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Forest/asmr_Forest_29XymHesxa0_chunk_031.mp3",
+      "origin_start": 96.74850340136054,
+      "origin_end": 106.74850340136054,
+      "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": 2.7416553287981857,
+      "origin_end": 4.773764172335601,
+      "mixture_start": 3.2567445889176123,
+      "mixture_end": 5.288871699197218,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/val/jackhammer/fsd50k_68080.wav",
+      "origin_start": 9.292902494331067,
+      "origin_end": 11.965578231292517,
+      "mixture_start": 5.720505697843224,
+      "mixture_end": 8.393186543046893,
+      "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 jackhammer",
+      "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": "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 cellphone buzz vibrating alert and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove 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/forest_2dist_172_rep2.json b/data/audio_mixtures_no_speech/train/forest_2dist_172_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..361ae07982baa3d5b5dd59661c752a2c49d9c85b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_172_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "forest_2dist_172_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "birds_chirping",
+    "hammer"
+  ],
+  "audio_file": "forest_2dist_172_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_063.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8389795918367347,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_011.mp3",
+      "origin_start": 35.52668934240363,
+      "origin_end": 45.52668934240363,
+      "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_427040.wav",
+      "origin_start": 6.541519274376418,
+      "origin_end": 10.296757369614513,
+      "mixture_start": 4.680771485027281,
+      "mixture_end": 8.436031146971306,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_420102.wav",
+      "origin_start": 5.912947845804989,
+      "origin_end": 8.367936507936507,
+      "mixture_start": 2.248913043108712,
+      "mixture_end": 4.703905590122692,
+      "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 hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and hammer",
+      "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 hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove hammer",
+      "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_191_rep3.json b/data/audio_mixtures_no_speech/train/forest_2dist_191_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..91b49c602d570cb9115c787241d065475347966e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_191_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "forest_2dist_191_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "birds_chirping"
+  ],
+  "audio_file": "forest_2dist_191_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p270/p270_383.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.07281179138322,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Forest/asmr_Forest_29XymHesxa0_chunk_028.mp3",
+      "origin_start": 162.71083900226756,
+      "origin_end": 172.71083900226756,
+      "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_66637_4.wav",
+      "origin_start": 8.326009070294784,
+      "origin_end": 11.53111111111111,
+      "mixture_start": 0.1740548584026656,
+      "mixture_end": 3.3791756197142755,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_416125.wav",
+      "origin_start": 3.6102721088435374,
+      "origin_end": 6.287913832199546,
+      "mixture_start": 2.8600567975506173,
+      "mixture_end": 5.537716794258403,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping 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/forest_2dist_195_rep4.json b/data/audio_mixtures_no_speech/train/forest_2dist_195_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..b9a61d9d38f1bc5bbf841aba86f9171730cba303
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_2dist_195_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "forest_2dist_195_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 2,
+  "distractors": [
+    "engine",
+    "jackhammer"
+  ],
+  "audio_file": "forest_2dist_195_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p228/p228_078.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.018956916099773,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_59fHDWDhzkY_chunk_012.mp3",
+      "origin_start": 195.31172335600908,
+      "origin_end": 205.31172335600908,
+      "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": 1.4351700680272108,
+      "origin_end": 4.434807256235827,
+      "mixture_start": 3.336796282004078,
+      "mixture_end": 6.336445831070247,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/val/jackhammer/fsd50k_386297.wav",
+      "origin_start": 4.436848072562358,
+      "origin_end": 6.946303854875284,
+      "mixture_start": 1.5903580961976123,
+      "mixture_end": 4.0998235224011434,
+      "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 jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine 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 jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer 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/forest_3dist_231_rep1.json b/data/audio_mixtures_no_speech/train/forest_3dist_231_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..b84f4ed3ed5373989708ecd7b8c88dc040847d2e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_231_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "forest_3dist_231_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "birds_chirping",
+    "jackhammer"
+  ],
+  "audio_file": "forest_3dist_231_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_277.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.7154195011337867,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_008.mp3",
+      "origin_start": 99.58909297052155,
+      "origin_end": 109.58909297052155,
+      "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_58178.wav",
+      "origin_start": 0.7348072562358277,
+      "origin_end": 3.9305895691609978,
+      "mixture_start": 6.089693470894133,
+      "mixture_end": 9.285488524932505,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/fsd50k_365668.wav",
+      "origin_start": 0.02201814058956916,
+      "origin_end": 2.0515873015873014,
+      "mixture_start": 1.5984119534488932,
+      "mixture_end": 3.6279872555366057,
+      "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": 6.37089679069028,
+      "mixture_end": 6.881735792957853,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and birds chirping and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "birds_chirping",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and birds chirping and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "birds_chirping",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep birds chirping and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep baby cry and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep baby cry and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and birds chirping and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove baby cry and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove birds chirping and jackhammer",
+      "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_233_rep2.json b/data/audio_mixtures_no_speech/train/forest_3dist_233_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..47735523a5c078660fe392f6ce81c29615e31a79
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_233_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "forest_3dist_233_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "cat",
+    "siren"
+  ],
+  "audio_file": "forest_3dist_233_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p266/p266_161.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6029478458049886,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_005.mp3",
+      "origin_start": 177.24297052154196,
+      "origin_end": 187.24297052154196,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_274592.wav",
+      "origin_start": 0.9380952380952381,
+      "origin_end": 4.27,
+      "mixture_start": 5.981716869058223,
+      "mixture_end": 9.313622635403304,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/val/cat/esc-50_4-133047-B-5.wav",
+      "origin_start": 1.623628117913832,
+      "origin_end": 4.428231292517006,
+      "mixture_start": 2.7739071152370878,
+      "mixture_end": 5.578532266600153,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/val/siren/esc-50_4-80761-A-42.wav",
+      "origin_start": 2.1097052154195013,
+      "origin_end": 4.663786848072562,
+      "mixture_start": 1.062100358221244,
+      "mixture_end": 3.6161957621669085,
+      "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 cat",
+      "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 cat",
+      "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 cat and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and cat 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 cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cat",
+        "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 cat and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and cat and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cat",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "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 cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep siren and remove cat",
+      "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 cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cat and siren and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and siren and remove cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove siren and keep applause and cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and cat and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and remove applause and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cat 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_236_rep3.json b/data/audio_mixtures_no_speech/train/forest_3dist_236_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..ba2c488ff1a05154317cbb8686fa61e2a1713aca
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_236_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "forest_3dist_236_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "baby_cry",
+    "hammer"
+  ],
+  "audio_file": "forest_3dist_236_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_032.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.561700680272109,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_59fHDWDhzkY_chunk_010.mp3",
+      "origin_start": 216.2925850340136,
+      "origin_end": 226.2925850340136,
+      "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": 2.526439909297052,
+      "mixture_start": 6.354921813825595,
+      "mixture_end": 8.828547402814856,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/fsd50k_107351.wav",
+      "origin_start": 2.3736507936507936,
+      "origin_end": 4.8257369614512475,
+      "mixture_start": 1.176287825728701,
+      "mixture_end": 3.6283854499824457,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_251434.wav",
+      "origin_start": 0.9850566893424036,
+      "origin_end": 4.026938775510204,
+      "mixture_start": 2.837969535503115,
+      "mixture_end": 5.879867134046964,
+      "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 baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove hammer",
+      "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": "remove car alarm and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and baby cry 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 baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "baby_cry"
+      ],
+      "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 baby cry and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "baby_cry",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and baby cry and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "baby_cry",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep baby cry and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and hammer and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and baby cry and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove car alarm and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and hammer and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and hammer 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_237_rep3.json b/data/audio_mixtures_no_speech/train/forest_3dist_237_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..906b8805816d469ffdd911c3da1bd8f645592fcc
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_237_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "forest_3dist_237_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "drill",
+    "alarm_clock",
+    "cricket"
+  ],
+  "audio_file": "forest_3dist_237_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_275.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.589115646258503,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_020.mp3",
+      "origin_start": 31.88997732426304,
+      "origin_end": 41.889977324263036,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_69187.wav",
+      "origin_start": 0.7403854875283447,
+      "origin_end": 3.6961224489795916,
+      "mixture_start": 4.17527850986155,
+      "mixture_end": 7.131037484318938,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_418898.wav",
+      "origin_start": 0.444172335600907,
+      "origin_end": 3.209092970521542,
+      "mixture_start": 0.5093082561869018,
+      "mixture_end": 3.274247492009012,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/esc-50_1-7456-A-13.wav",
+      "origin_start": 1.0484126984126985,
+      "origin_end": 3.1975963718820863,
+      "mixture_start": 2.6896919543672624,
+      "mixture_end": 4.838880364766605,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill",
+      "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 drill and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill 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 drill and alarm clock and cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "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 drill and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "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 drill and alarm clock and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "alarm_clock",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "cricket"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "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 drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and keep alarm clock and cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "cricket"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and cricket and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep drill and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove drill and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and cricket and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and remove alarm clock and cricket",
+      "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_262_rep1.json b/data/audio_mixtures_no_speech/train/forest_3dist_262_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..9b3f1e2ae60396acecc5c5f4edf45022c9df2214
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_262_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "forest_3dist_262_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "fireworks",
+    "baby_cry",
+    "birds_chirping"
+  ],
+  "audio_file": "forest_3dist_262_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p240/p240_094.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.243718820861678,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_044.mp3",
+      "origin_start": 192.412358276644,
+      "origin_end": 202.412358276644,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/esc-50_1-25777-A-48.wav",
+      "origin_start": 1.89578231292517,
+      "origin_end": 4.094648526077098,
+      "mixture_start": 1.707409609668866,
+      "mixture_end": 3.906294466923997,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_58178.wav",
+      "origin_start": 1.774920634920635,
+      "origin_end": 5.435124716553288,
+      "mixture_start": 4.482352388027074,
+      "mixture_end": 8.142560148804318,
+      "channel": 3
+    },
+    "distractor_3": {
+      "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": 5.803787818094745,
+      "mixture_end": 6.384286684307897,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks",
+      "command_type": "remove_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove fireworks and baby cry and birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep fireworks",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and baby cry and birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fireworks",
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep fireworks",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and keep baby cry and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and birds chirping and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "birds_chirping"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fireworks and baby cry and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fireworks",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fireworks and baby cry and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove fireworks and birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and birds chirping 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_3dist_273_rep4.json b/data/audio_mixtures_no_speech/train/forest_3dist_273_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..6736c6643f5f9db6433c7358f0d525f5ad976c7d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_273_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "forest_3dist_273_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "engine",
+    "sneeze",
+    "gunshot"
+  ],
+  "audio_file": "forest_3dist_273_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_096.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.329183673469388,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_030.mp3",
+      "origin_start": 112.90315192743765,
+      "origin_end": 122.90315192743765,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/val/engine/esc-50_4-186940-A-44.wav",
+      "origin_start": 0.3140816326530612,
+      "origin_end": 3.7260090702947846,
+      "mixture_start": 1.61971560612078,
+      "mixture_end": 5.031657590579378,
+      "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": 7.56196930852246,
+      "mixture_end": 8.374667721220874,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_108043.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.509297052154195,
+      "mixture_start": 4.815070138701052,
+      "mixture_end": 6.324367190855247,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "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 engine and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and 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": "remove engine and sneeze and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and sneeze and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep sneeze and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and gunshot and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and sneeze and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and sneeze and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove engine and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and gunshot 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/forest_3dist_285_rep3.json b/data/audio_mixtures_no_speech/train/forest_3dist_285_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..221007233af8ad783ae60b6ce979194cd1c4cbda
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_285_rep3.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "forest_3dist_285_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "helicopter",
+    "birds_chirping"
+  ],
+  "audio_file": "forest_3dist_285_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_147.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9464172335600907,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Forest/asmr_Forest_29XymHesxa0_chunk_000.mp3",
+      "origin_start": 184.23179138321996,
+      "origin_end": 194.23179138321996,
+      "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_223182.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7198185941043084,
+      "mixture_start": 2.2269322069211905,
+      "mixture_end": 2.946750801025499,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/esc-50_3-150979-C-40.wav",
+      "origin_start": 1.6989115646258504,
+      "origin_end": 4.572675736961451,
+      "mixture_start": 5.053633471903498,
+      "mixture_end": 7.927411152789136,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/esc-50_2-72547-C-14.wav",
+      "origin_start": 0.25882086167800455,
+      "origin_end": 2.6573242630385487,
+      "mixture_start": 1.0911166493090834,
+      "mixture_end": 3.489622014939997,
+      "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_290_rep1.json b/data/audio_mixtures_no_speech/train/forest_3dist_290_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..9371e6ddd1aac1ba4b23245ac72f031de97bd232
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_290_rep1.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "forest_3dist_290_rep1",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "helicopter",
+    "ringtone",
+    "car_horn"
+  ],
+  "audio_file": "forest_3dist_290_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_146.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.968639455782313,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_022.mp3",
+      "origin_start": 103.11460317460318,
+      "origin_end": 113.11460317460318,
+      "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": 15.55687074829932,
+      "origin_end": 17.886553287981858,
+      "mixture_start": 7.335554737210205,
+      "mixture_end": 9.665239658802697,
+      "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": 0.6367196595535847,
+      "mixture_end": 2.3201663715717253,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/esc-50_3-145577-A-43.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.905578231292517,
+      "mixture_start": 1.889716943868007,
+      "mixture_end": 2.795295175160524,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "helicopter",
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "helicopter",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "helicopter",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter 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": [
+        "helicopter"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove helicopter and ringtone and car horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and ringtone and car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and car horn and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "car_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep helicopter and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep helicopter and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and remove helicopter and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove helicopter and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and car horn 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_296_rep2.json b/data/audio_mixtures_no_speech/train/forest_3dist_296_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..358609ca4ec5920d40d83aa7af2018e998c3936a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_296_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "forest_3dist_296_rep2",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "footsteps",
+    "jackhammer"
+  ],
+  "audio_file": "forest_3dist_296_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p225/p225_353.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.7580725623582767,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_xNN7iTA57jM_chunk_010.mp3",
+      "origin_start": 5.9878684807256235,
+      "origin_end": 15.987868480725623,
+      "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": 1.5842403628117914,
+      "origin_end": 4.655306122448979,
+      "mixture_start": 3.2253235582410102,
+      "mixture_end": 6.296409039591915,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_213307.wav",
+      "origin_start": 0.7448299319727891,
+      "origin_end": 4.154013605442177,
+      "mixture_start": 0.027305363453244,
+      "mixture_end": 3.4365042685159874,
+      "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": 7.589548208920163,
+      "mixture_end": 8.170047075133315,
+      "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/forest_3dist_296_rep3.json b/data/audio_mixtures_no_speech/train/forest_3dist_296_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..ec911f7c1ac5d9169d38acccbd0b2d038f6fa486
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_296_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "forest_3dist_296_rep3",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "footsteps",
+    "jackhammer"
+  ],
+  "audio_file": "forest_3dist_296_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p282/p282_358.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.518004535147392,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_037.mp3",
+      "origin_start": 237.76467120181405,
+      "origin_end": 247.76467120181405,
+      "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_71234.wav",
+      "origin_start": 11.386326530612244,
+      "origin_end": 13.481541950113378,
+      "mixture_start": 6.018105924223058,
+      "mixture_end": 8.113321351587473,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_422854.wav",
+      "origin_start": 0.003015873015873016,
+      "origin_end": 2.4103401360544217,
+      "mixture_start": 2.4620452868451914,
+      "mixture_end": 4.869375435636839,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/val/jackhammer/fsd50k_386301.wav",
+      "origin_start": 0.007709750566893424,
+      "origin_end": 2.750657596371882,
+      "mixture_start": 4.240926727116771,
+      "mixture_end": 6.983887287906676,
+      "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/forest_3dist_296_rep4.json b/data/audio_mixtures_no_speech/train/forest_3dist_296_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..d3c4c3ce1b8570136c2c6d868be346701570e5cd
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/forest_3dist_296_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "forest_3dist_296_rep4",
+  "scene_name": "Forest",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "footsteps",
+    "jackhammer"
+  ],
+  "audio_file": "forest_3dist_296_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p234/p234_132.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.635578231292517,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Forest/asmr_Forest_29XymHesxa0_chunk_027.mp3",
+      "origin_start": 242.59052154195012,
+      "origin_end": 252.59052154195012,
+      "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": 5.549427176470359,
+      "mixture_end": 6.385345543817298,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_71698.wav",
+      "origin_start": 0.009614512471655328,
+      "origin_end": 3.9746938775510205,
+      "mixture_start": 4.204127320707175,
+      "mixture_end": 8.169206770991696,
+      "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": 3.5209687477064886,
+      "mixture_end": 4.147907523216693,
+      "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_095_rep2.json b/data/audio_mixtures_no_speech/train/home_1dist_095_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..6c0db0207d8e2e6a063a8f064db584dbb21395ea
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_1dist_095_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "home_1dist_095_rep2",
+  "scene_name": "Home",
+  "distractor_count": 1,
+  "distractors": [
+    "door_knock"
+  ],
+  "audio_file": "home_1dist_095_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_237.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.268956916099773,
+      "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": "door_knock",
+      "display_name": "door knock",
+      "original_path": "distractors/train/door_knock/fsd50k_218980.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.486077097505669,
+      "mixture_start": 1.9679850602363498,
+      "mixture_end": 3.454062157742019,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "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/home_2dist_116_rep2.json b/data/audio_mixtures_no_speech/train/home_2dist_116_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..2b2fb9ce7065bdf5d66b7aa1640871150546d1fa
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_116_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "home_2dist_116_rep2",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "drill"
+  ],
+  "audio_file": "home_2dist_116_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_392.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.24421768707483,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Home/asmr_Home_J1l8RMR-qXM_chunk_000.mp3",
+      "origin_start": 92.38095238095238,
+      "origin_end": 102.38095238095238,
+      "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": 4.2260317460317465,
+      "origin_end": 6.374716553287982,
+      "mixture_start": 6.315448987028097,
+      "mixture_end": 8.464149814503399,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_66281.wav",
+      "origin_start": 0.028095238095238097,
+      "origin_end": 2.3848526077097505,
+      "mixture_start": 4.781238103861314,
+      "mixture_end": 7.137999108748447,
+      "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 drill",
+      "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": "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 cellphone buzz vibrating alert and drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "drill"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove drill",
+      "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_2dist_136_rep3.json b/data/audio_mixtures_no_speech/train/home_2dist_136_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..0be69520245a79ba4ba92d21e79a799dc2cf861e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_136_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "home_2dist_136_rep3",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "siren"
+  ],
+  "audio_file": "home_2dist_136_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_404.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.032063492063492,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_011.mp3",
+      "origin_start": 255.6828798185941,
+      "origin_end": 265.68287981859413,
+      "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_2-50666-A-20.wav",
+      "origin_start": 0.5826530612244898,
+      "origin_end": 4.011065759637188,
+      "mixture_start": 3.038841440443338,
+      "mixture_end": 6.467257706870438,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-70936-A-42.wav",
+      "origin_start": 0.07244897959183673,
+      "origin_end": 3.0422902494331066,
+      "mixture_start": 6.480101123293223,
+      "mixture_end": 9.449956545089195,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        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": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "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": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove 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/home_2dist_141_rep3.json b/data/audio_mixtures_no_speech/train/home_2dist_141_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..b65391c2ca951b8da1fa65e626e3b19ae7baef45
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_141_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "home_2dist_141_rep3",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "cricket",
+    "jackhammer"
+  ],
+  "audio_file": "home_2dist_141_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_234.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.6907709750566893,
+      "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": 4.124761904761905,
+      "origin_end": 14.124761904761904,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_57317.wav",
+      "origin_start": 5.389818594104308,
+      "origin_end": 8.855170068027212,
+      "mixture_start": 2.3119800035066613,
+      "mixture_end": 5.777351903514955,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386244.wav",
+      "origin_start": 0.6470975056689342,
+      "origin_end": 2.960748299319728,
+      "mixture_start": 6.880698072819786,
+      "mixture_end": 9.194361944386253,
+      "channel": 3
+    }
+  },
+  "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": "remove 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": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove jackhammer",
+      "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/home_2dist_162_rep2.json b/data/audio_mixtures_no_speech/train/home_2dist_162_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..1f2eadb9f5429671a890fe19c889f11ea612ec0d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_162_rep2.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "home_2dist_162_rep2",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "drill",
+    "engine"
+  ],
+  "audio_file": "home_2dist_162_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p265/p265_119.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.119750566893424,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_011.mp3",
+      "origin_start": 42.702562358276644,
+      "origin_end": 52.702562358276644,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_386280.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9404081632653061,
+      "mixture_start": 2.2039192807618786,
+      "mixture_end": 3.1443274440271844,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/val/engine/esc-50_4-186962-A-44.wav",
+      "origin_start": 1.648639455782313,
+      "origin_end": 4.863492063492063,
+      "mixture_start": 3.2756509190705767,
+      "mixture_end": 6.49052530851608,
+      "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 engine",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and engine",
+      "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 engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and remove engine",
+      "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_166_rep4.json b/data/audio_mixtures_no_speech/train/home_2dist_166_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..c90ce0f26fb5ba3ac36965b8f8016f774d99e111
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_166_rep4.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "home_2dist_166_rep4",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "doorbell"
+  ],
+  "audio_file": "home_2dist_166_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p234/p234_096.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.307687074829932,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_003.mp3",
+      "origin_start": 57.09356009070295,
+      "origin_end": 67.09356009070295,
+      "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_182351.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6965759637188209,
+      "mixture_start": 3.012718088611955,
+      "mixture_end": 3.7093167280677375,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "doorbell",
+      "display_name": "doorbell",
+      "original_path": "distractors/train/doorbell/fsd50k_196376.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9969160997732427,
+      "mixture_start": 7.536142044132193,
+      "mixture_end": 9.533058143905436,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "alarm_clock",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and doorbell",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove doorbell",
+      "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_169_rep1.json b/data/audio_mixtures_no_speech/train/home_2dist_169_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..f84467616892bc0d3029743a2d76f97daa3517c0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_169_rep1.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "home_2dist_169_rep1",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "dog",
+    "gunshot"
+  ],
+  "audio_file": "home_2dist_169_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_082.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.121337868480726,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_014.mp3",
+      "origin_start": 262.5941723356009,
+      "origin_end": 272.5941723356009,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/val/dog/fsd50k_236126.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6834467120181407,
+      "mixture_start": 5.27504084628372,
+      "mixture_end": 6.958487558301861,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_145206.wav",
+      "origin_start": 0.34784580498866213,
+      "origin_end": 3.1040362811791384,
+      "mixture_start": 6.4871781518771465,
+      "mixture_end": 9.243384314075415,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        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": [
+        "dog"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove dog and gunshot",
+      "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": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "dog",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot 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/home_2dist_173_rep1.json b/data/audio_mixtures_no_speech/train/home_2dist_173_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..a61b3410fa9c4d4df5f756289d62187ef88d85cf
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_2dist_173_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "home_2dist_173_rep1",
+  "scene_name": "Home",
+  "distractor_count": 2,
+  "distractors": [
+    "helicopter",
+    "ringtone"
+  ],
+  "audio_file": "home_2dist_173_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_057.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.099251700680272,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_012.mp3",
+      "origin_start": 209.02938775510205,
+      "origin_end": 219.02938775510205,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/fsd50k_94867.wav",
+      "origin_start": 11.786054421768707,
+      "origin_end": 15.573514739229024,
+      "mixture_start": 0.4609208472524904,
+      "mixture_end": 4.24839636621781,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_234564.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9404081632653061,
+      "mixture_start": 5.26147683762264,
+      "mixture_end": 6.201885000887946,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "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 helicopter and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone 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/home_3dist_202_rep2.json b/data/audio_mixtures_no_speech/train/home_3dist_202_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..9330403d1f9ee52fa74e2b178c7dbf87e29689c4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_202_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "home_3dist_202_rep2",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "drill",
+    "helicopter",
+    "footsteps"
+  ],
+  "audio_file": "home_3dist_202_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_096.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.290612244897959,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_002.mp3",
+      "origin_start": 284.0074149659864,
+      "origin_end": 294.0074149659864,
+      "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": 4.612721088435374,
+      "origin_end": 7.739092970521542,
+      "mixture_start": 3.0837145018729464,
+      "mixture_end": 6.2100880619307475,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/fsd50k_59277.wav",
+      "origin_start": 1.8558049886621315,
+      "origin_end": 4.614013605442177,
+      "mixture_start": 0.7355814415818936,
+      "mixture_end": 3.4938013628240974,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_405632.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6834467120181407,
+      "mixture_start": 5.410549968330225,
+      "mixture_end": 7.093996680348366,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove drill and helicopter and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and helicopter and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep drill",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and keep helicopter and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep drill and footsteps and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep drill and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "drill",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and helicopter and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove drill and footsteps and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and remove helicopter and footsteps",
+      "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_3dist_209_rep1.json b/data/audio_mixtures_no_speech/train/home_3dist_209_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..e7c7afa673c391995b5b5c80dbd02d459ecd5a9d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_209_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "home_3dist_209_rep1",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "dog",
+    "hammer"
+  ],
+  "audio_file": "home_3dist_209_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_457.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.4339909297052156,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_009.mp3",
+      "origin_start": 9.60843537414966,
+      "origin_end": 19.60843537414966,
+      "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_34874.wav",
+      "origin_start": 4.669047619047619,
+      "origin_end": 7.909047619047619,
+      "mixture_start": 5.217294284116402,
+      "mixture_end": 8.457301982743687,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/val/dog/esc-50_4-184575-A-0.wav",
+      "origin_start": 1.1915419501133786,
+      "origin_end": 4.084489795918367,
+      "mixture_start": 2.789015202202511,
+      "mixture_end": 5.681963936547434,
+      "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": 1.5279832459077813,
+      "mixture_end": 3.3623596631413415,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and dog",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and dog and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        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 hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and dog and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "dog",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove dog and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and hammer and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and hammer and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep baby cry and dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and dog and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and hammer and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog 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/home_3dist_215_rep3.json b/data/audio_mixtures_no_speech/train/home_3dist_215_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..d7134a2383bbbfcfccdf06d8af5522d7ebf68438
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_215_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "home_3dist_215_rep3",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "birds_chirping",
+    "doorbell",
+    "gunshot"
+  ],
+  "audio_file": "home_3dist_215_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p270/p270_072.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.336054421768708,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_011.mp3",
+      "origin_start": 186.6755328798186,
+      "origin_end": 196.6755328798186,
+      "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_156373.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9752380952380952,
+      "mixture_start": 4.728450561354891,
+      "mixture_end": 5.703688656592986,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "doorbell",
+      "display_name": "doorbell",
+      "original_path": "distractors/val/doorbell/fsd50k_212129.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6733786848072563,
+      "mixture_start": 0.09002641262988278,
+      "mixture_end": 0.763405097437139,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_128979.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.474467120181406,
+      "mixture_start": 4.298192533436569,
+      "mixture_end": 5.772659653617975,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and doorbell",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove birds chirping and doorbell and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep birds chirping",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and doorbell and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "birds_chirping",
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep birds chirping",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and keep doorbell and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and gunshot and remove doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and doorbell and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "birds_chirping",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove birds chirping and doorbell and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and remove birds chirping and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep birds chirping and remove doorbell and gunshot",
+      "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_3dist_231_rep4.json b/data/audio_mixtures_no_speech/train/home_3dist_231_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..0d5774734e54ec4901c768f99f7e589924873241
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_231_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "home_3dist_231_rep4",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "cricket",
+    "glass_breaking"
+  ],
+  "audio_file": "home_3dist_231_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p236/p236_193.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.219931972789116,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_015.mp3",
+      "origin_start": 73.14986394557823,
+      "origin_end": 83.14986394557823,
+      "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": 2.0615419501133787,
+      "origin_end": 4.134739229024944,
+      "mixture_start": 0.520671746096385,
+      "mixture_end": 2.593878663384058,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_162438.wav",
+      "origin_start": 1.0181632653061226,
+      "origin_end": 3.2041950113378683,
+      "mixture_start": 2.6122993720139984,
+      "mixture_end": 4.798346294286228,
+      "channel": 3
+    },
+    "distractor_3": {
+      "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": 0.7314168469709783,
+      "mixture_end": 1.6950449648848105,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "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 cricket",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cricket 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,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cricket",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cricket",
+        "glass_breaking"
+      ],
+      "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"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cricket",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cricket and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cricket",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep cricket and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and glass breaking and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep cellphone buzz vibrating alert and cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cricket and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove cellphone buzz vibrating alert and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cricket and 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/home_3dist_248_rep4.json b/data/audio_mixtures_no_speech/train/home_3dist_248_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..307c76f03e8bdcfdb5e98e8e332428c722557acb
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_248_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "home_3dist_248_rep4",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "car_alarm",
+    "glass_breaking"
+  ],
+  "audio_file": "home_3dist_248_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p264/p264_098.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.7324489795918367,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_011.mp3",
+      "origin_start": 160.0975283446712,
+      "origin_end": 170.0975283446712,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/val/applause/fsd50k_381363.wav",
+      "origin_start": 2.5326303854875283,
+      "origin_end": 4.590453514739229,
+      "mixture_start": 4.058899053478843,
+      "mixture_end": 6.116742441396161,
+      "channel": 2
+    },
+    "distractor_2": {
+      "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": 2.5896112282921546,
+      "mixture_end": 3.5262325434848982,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_367624.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1377777777777778,
+      "mixture_start": 1.1603626397922207,
+      "mixture_end": 2.298140417569998,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and car alarm and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and car alarm and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "car_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep car alarm and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep applause and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and car alarm and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "car_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and car alarm and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove applause and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and glass breaking 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_3dist_268_rep4.json b/data/audio_mixtures_no_speech/train/home_3dist_268_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..6faaa204a6a6ad180c9abf7d93018addd7f3b966
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_268_rep4.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "home_3dist_268_rep4",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "ringtone",
+    "alarm_clock",
+    "door_knock"
+  ],
+  "audio_file": "home_3dist_268_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p268/p268_068.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.48172335600907,
+      "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": 9.418866213151928,
+      "origin_end": 19.418866213151926,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_167548.wav",
+      "origin_start": 1.8741043083900226,
+      "origin_end": 4.930657596371882,
+      "mixture_start": 5.645763143367747,
+      "mixture_end": 8.702335707074898,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_1-72195-B-37.wav",
+      "origin_start": 1.390408163265306,
+      "origin_end": 3.8964399092970523,
+      "mixture_start": 0.25644960861200544,
+      "mixture_end": 2.7624936563856375,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "door_knock",
+      "display_name": "door knock",
+      "original_path": "distractors/train/door_knock/esc-50_1-103999-A-30.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.068095238095238,
+      "mixture_start": 2.4495779924801346,
+      "mixture_end": 3.5176959063123343,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove door knock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and door knock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and door knock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and alarm clock and door knock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and alarm clock and door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep door knock and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep alarm clock and door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and door knock and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove door knock 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 door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and door knock and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove alarm clock and door knock",
+      "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_272_rep3.json b/data/audio_mixtures_no_speech/train/home_3dist_272_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..716a4e8c94a6fd0b64f46f8ace6adfc91e7d0ef5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_272_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "home_3dist_272_rep3",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "glass_breaking",
+    "jackhammer"
+  ],
+  "audio_file": "home_3dist_272_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p285/p285_036.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.228321995464853,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_GSxEQTqSFR8_chunk_011.mp3",
+      "origin_start": 1.9006349206349207,
+      "origin_end": 11.900634920634921,
+      "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": 11.87015873015873,
+      "origin_end": 14.215215419501133,
+      "mixture_start": 5.98852859801989,
+      "mixture_end": 8.333591965106734,
+      "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": 1.8574803269922524,
+      "mixture_end": 2.8211084449060846,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/val/jackhammer/fsd50k_386297.wav",
+      "origin_start": 5.0291609977324265,
+      "origin_end": 8.24312925170068,
+      "mixture_start": 3.319262438245949,
+      "mixture_end": 6.533243496927417,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        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": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and glass breaking and jackhammer",
+      "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": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "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 baby cry and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and glass breaking and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep glass breaking and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep baby cry and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and glass breaking and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove baby cry and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and jackhammer and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and jackhammer 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_3dist_279_rep4.json b/data/audio_mixtures_no_speech/train/home_3dist_279_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..310c1131df53429c722109c9dfceba3fba78475b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_279_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "home_3dist_279_rep4",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "gunshot",
+    "jackhammer"
+  ],
+  "audio_file": "home_3dist_279_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_188.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.477687074829932,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_002.mp3",
+      "origin_start": 4.5459410430839,
+      "origin_end": 14.5459410430839,
+      "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": 2.3945578231292517,
+      "origin_end": 6.34047619047619,
+      "mixture_start": 1.8923786913388534,
+      "mixture_end": 5.83830549985632,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_148838.wav",
+      "origin_start": 0.6670521541950113,
+      "origin_end": 2.7,
+      "mixture_start": 7.271459564419828,
+      "mixture_end": 9.30440831146846,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386237.wav",
+      "origin_start": 3.5597732426303854,
+      "origin_end": 5.846666666666667,
+      "mixture_start": 5.580306732670165,
+      "mixture_end": 7.867211996185715,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "car_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car 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": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and gunshot and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep car alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and gunshot and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and jackhammer and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep car alarm and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and gunshot and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and gunshot and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and jackhammer and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and jackhammer 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_3dist_291_rep4.json b/data/audio_mixtures_no_speech/train/home_3dist_291_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..f3c7b1a3f75beda033bf96bddd48e968e2f12e7e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/home_3dist_291_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "home_3dist_291_rep4",
+  "scene_name": "Home",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "cellphone_buzz_vibrating_alert",
+    "boom"
+  ],
+  "audio_file": "home_3dist_291_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p225/p225_124.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.902517006802721,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Home/asmr_Home_sFVZPpcCUcA_chunk_008.mp3",
+      "origin_start": 190.5391156462585,
+      "origin_end": 200.5391156462585,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_277024.wav",
+      "origin_start": 7.450340136054422,
+      "origin_end": 9.90360544217687,
+      "mixture_start": 4.143372401447884,
+      "mixture_end": 6.596658363931592,
+      "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": 0.08421768707482993,
+      "origin_end": 2.1590249433106576,
+      "mixture_start": 2.409174903219433,
+      "mixture_end": 4.483984675418232,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_189778.wav",
+      "origin_start": 1.4113832199546485,
+      "origin_end": 5.311065759637188,
+      "mixture_start": 5.638825184894915,
+      "mixture_end": 9.538529856726376,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "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": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and cellphone buzz vibrating alert and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and cellphone buzz vibrating alert",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "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"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and cellphone buzz vibrating alert and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "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",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep cellphone buzz vibrating alert and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert 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 cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and remove applause and cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove applause and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert 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/kitchen_1dist_002_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_002_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..b0f039c59bc27732f5655b3f217b7a23f5c197f2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_002_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "kitchen_1dist_002_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "helicopter"
+  ],
+  "audio_file": "kitchen_1dist_002_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_257.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.758140589569161,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_006.mp3",
+      "origin_start": 194.12145124716554,
+      "origin_end": 204.12145124716554,
+      "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": 3.800702947845805,
+      "origin_end": 7.559705215419501,
+      "mixture_start": 3.417445440748441,
+      "mixture_end": 7.176452785448497,
+      "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/kitchen_1dist_010_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_010_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..17a963387b0c1052b80cd9049abd084765e8e5ab
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_010_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "kitchen_1dist_010_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "kitchen_1dist_010_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_336.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.501995464852608,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_074.mp3",
+      "origin_start": 146.5273469387755,
+      "origin_end": 156.5273469387755,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_360831.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.253877551020408,
+      "mixture_start": 1.76861688940553,
+      "mixture_end": 3.0224944404259384,
+      "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/kitchen_1dist_010_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_010_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..c208c67280b0020e441c8472790f1458719c569d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_010_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "kitchen_1dist_010_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "kitchen_1dist_010_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_010.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.07734693877551,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_049.mp3",
+      "origin_start": 255.49238095238096,
+      "origin_end": 265.4923809523809,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_250630.wav",
+      "origin_start": 0.09770975056689342,
+      "origin_end": 2.104331065759637,
+      "mixture_start": 4.650282158042088,
+      "mixture_end": 6.656905247553613,
+      "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/kitchen_1dist_016_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_016_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..515cc3ff56671021152915334e99bd1ab759ea79
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_016_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "kitchen_1dist_016_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "hammer"
+  ],
+  "audio_file": "kitchen_1dist_016_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_423.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.03437641723356,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_124.mp3",
+      "origin_start": 75.31757369614512,
+      "origin_end": 85.31757369614512,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_61302.wav",
+      "origin_start": 12.171292517006803,
+      "origin_end": 14.813877551020408,
+      "mixture_start": 4.33793826426291,
+      "mixture_end": 6.980537253471093,
+      "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/kitchen_1dist_018_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_018_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..2fb0026273e6b99535e72eb7ae77e87874e07c6c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_018_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "kitchen_1dist_018_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "kitchen_1dist_018_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_072.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.477732426303855,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_053.mp3",
+      "origin_start": 172.21952380952382,
+      "origin_end": 182.21952380952382,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/fsd50k_201611.wav",
+      "origin_start": 0.014399092970521542,
+      "origin_end": 3.812879818594104,
+      "mixture_start": 0.1967595525858335,
+      "mixture_end": 3.995246000428756,
+      "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_028_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_028_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..3dc4475134d4703ce58f892db61421d59359ad20
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_028_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "kitchen_1dist_028_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "siren"
+  ],
+  "audio_file": "kitchen_1dist_028_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_107.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.1185714285714288,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_054.mp3",
+      "origin_start": 114.56424036281179,
+      "origin_end": 124.56424036281179,
+      "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": 2.213356009070295,
+      "origin_end": 4.224897959183673,
+      "mixture_start": 5.8511432652948585,
+      "mixture_end": 7.8626910561112755,
+      "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_031_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_031_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..0a8ce90e1173ad9a65a7f7034436dc93b728cd4c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_031_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "kitchen_1dist_031_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "boom"
+  ],
+  "audio_file": "kitchen_1dist_031_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_418.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.585079365079365,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_MN5dmzXgGdQ_chunk_020.mp3",
+      "origin_start": 24.024739229024945,
+      "origin_end": 34.024739229024945,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_333692.wav",
+      "origin_start": 0.7462358276643991,
+      "origin_end": 3.1360997732426306,
+      "mixture_start": 5.641019682059758,
+      "mixture_end": 8.030897519024133,
+      "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_066_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_066_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..0037787efd30f4011dcf5dfaaab9f91b7f01f67e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_066_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "kitchen_1dist_066_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "alarm_clock"
+  ],
+  "audio_file": "kitchen_1dist_066_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_274.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.5466439909297054,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_000.mp3",
+      "origin_start": 288.5738548752835,
+      "origin_end": 298.5738548752835,
+      "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": 0.9189342403628118,
+      "origin_end": 4.34421768707483,
+      "mixture_start": 5.861281080550173,
+      "mixture_end": 9.286567458027022,
+      "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/kitchen_1dist_069_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_069_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..274cc18bd790a7d37644c01a4911300513b2ef5e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_069_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "kitchen_1dist_069_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "dog"
+  ],
+  "audio_file": "kitchen_1dist_069_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_372.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.604965986394558,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_052.mp3",
+      "origin_start": 86.90607709750567,
+      "origin_end": 96.90607709750567,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_332176.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.2770975056689342,
+      "mixture_start": 7.382519035271921,
+      "mixture_end": 8.659616540940855,
+      "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/kitchen_1dist_094_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_1dist_094_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..dae88ad77d8ea01af1a8dee8580970ac413faeb4
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_1dist_094_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "kitchen_1dist_094_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 1,
+  "distractors": [
+    "door_knock"
+  ],
+  "audio_file": "kitchen_1dist_094_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_017.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.139138321995465,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_072.mp3",
+      "origin_start": 137.67938775510203,
+      "origin_end": 147.67938775510203,
+      "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_2-134915-A-30.wav",
+      "origin_start": 0.08233560090702947,
+      "origin_end": 2.126122448979592,
+      "mixture_start": 0.26903254228111834,
+      "mixture_end": 2.312821061404576,
+      "channel": 2
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "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/kitchen_2dist_114_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_114_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..9be17dbdcc4f74ea53a2f46620394a30fbba2773
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_114_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_114_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "slam"
+  ],
+  "audio_file": "kitchen_2dist_114_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_137.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.458299319727891,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_091.mp3",
+      "origin_start": 186.3627664399093,
+      "origin_end": 196.3627664399093,
+      "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": 8.889040928095959,
+      "mixture_end": 9.423099885012059,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_421477.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5340362811791384,
+      "mixture_start": 7.1380056143924,
+      "mixture_end": 7.6720645713085,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "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 sneeze and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove 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/kitchen_2dist_120_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_120_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..976ec532d06aaed661b7efde7f833714e2601ef6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_120_rep2.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "kitchen_2dist_120_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "cat",
+    "door_knock"
+  ],
+  "audio_file": "kitchen_2dist_120_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_121.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.920408163265306,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_059.mp3",
+      "origin_start": 178.53598639455782,
+      "origin_end": 188.53598639455782,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "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": 3.9569833035368878,
+      "mixture_end": 4.525872192425776,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "door_knock",
+      "display_name": "door knock",
+      "original_path": "distractors/train/door_knock/esc-50_2-134915-A-30.wav",
+      "origin_start": 0.005328798185941043,
+      "origin_end": 2.225827664399093,
+      "mixture_start": 4.7013265378625,
+      "mixture_end": 6.921835689420719,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cat",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove door knock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cat and door knock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cat and door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cat and keep door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cat and remove door knock",
+      "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/kitchen_2dist_130_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_130_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..bb81632822d0198c787aa94a5f54de1addfb5f3c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_130_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_130_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "car_alarm",
+    "sneeze"
+  ],
+  "audio_file": "kitchen_2dist_130_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_102.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.348956916099773,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_092.mp3",
+      "origin_start": 175.41653061224488,
+      "origin_end": 185.41653061224488,
+      "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": 2.1191609977324264,
+      "origin_end": 4.867437641723356,
+      "mixture_start": 0.06395705697289002,
+      "mixture_end": 2.8122337080528355,
+      "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": 3.1111643955141375,
+      "mixture_end": 3.7497131483486044,
+      "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": "keep sneeze and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze 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/kitchen_2dist_132_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_132_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..f34dcd48b8e002490b7e87b2ea4f31911aace339
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_132_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_132_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "helicopter",
+    "footsteps"
+  ],
+  "audio_file": "kitchen_2dist_132_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p244/p244_050.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.011269841269841,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_005.mp3",
+      "origin_start": 217.97408163265305,
+      "origin_end": 227.97408163265305,
+      "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-C-40.wav",
+      "origin_start": 0.7375510204081632,
+      "origin_end": 4.0934920634920635,
+      "mixture_start": 2.705073220331953,
+      "mixture_end": 6.061033038177111,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_152792.wav",
+      "origin_start": 3.6081179138321997,
+      "origin_end": 6.042947845804989,
+      "mixture_start": 1.1961287345659277,
+      "mixture_end": 3.6309613518825827,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "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 helicopter and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove 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/kitchen_2dist_143_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_143_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..7c22207dc084a4688c059c641446ff510cc5ec28
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_143_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_143_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "cricket",
+    "door_knock"
+  ],
+  "audio_file": "kitchen_2dist_143_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p228/p228_114.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.5465079365079366,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_012.mp3",
+      "origin_start": 137.25326530612244,
+      "origin_end": 147.25326530612244,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/val/cricket/fsd50k_400663.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.626938775510204,
+      "mixture_start": 2.1219173135568257,
+      "mixture_end": 2.7488560890670297,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "door_knock",
+      "display_name": "door knock",
+      "original_path": "distractors/train/door_knock/fsd50k_32297.wav",
+      "origin_start": 0.2477777777777778,
+      "origin_end": 2.8026303854875283,
+      "mixture_start": 3.645086323449486,
+      "mixture_end": 6.199954007078686,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove door knock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket and door knock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep door knock and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove door knock 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/kitchen_2dist_146_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_146_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..df9c384a93d791363b11882c8608a1ee041b5256
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_146_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_146_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "computer_typing",
+    "slam"
+  ],
+  "audio_file": "kitchen_2dist_146_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p241/p241_159.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2870068027210886,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_063.mp3",
+      "origin_start": 51.50625850340136,
+      "origin_end": 61.50625850340136,
+      "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_403446.wav",
+      "origin_start": 0.031133786848072564,
+      "origin_end": 2.4690022675736962,
+      "mixture_start": 5.768378820857768,
+      "mixture_end": 8.20626321526275,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_218888.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.3583673469387756,
+      "mixture_start": 3.284069690754589,
+      "mixture_end": 4.642437037693365,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove computer typing",
+      "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 computer typing and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep computer typing and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove slam 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/kitchen_2dist_158_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_158_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..088ec295cc78eabf6f24f3b33e761eeae14c3743
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_158_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_158_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "helicopter",
+    "ringtone"
+  ],
+  "audio_file": "kitchen_2dist_158_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p240/p240_361.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.099546485260771,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_122.mp3",
+      "origin_start": 198.56968253968253,
+      "origin_end": 208.56968253968253,
+      "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": 1.4165759637188209,
+      "origin_end": 3.7544671201814057,
+      "mixture_start": 7.062212172631972,
+      "mixture_end": 9.400115298830197,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/val/ringtone/fsd50k_234565.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.068095238095238,
+      "mixture_start": 2.5751377657113315,
+      "mixture_end": 3.6432556795435307,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "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 helicopter and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone 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/kitchen_2dist_161_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_161_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..cec298c076df30ad7f96705acbd49f3420f68216
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_161_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "kitchen_2dist_161_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "dog",
+    "hammer"
+  ],
+  "audio_file": "kitchen_2dist_161_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_111.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.778684807256236,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_018.mp3",
+      "origin_start": 71.37272108843537,
+      "origin_end": 81.37272108843537,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_236221.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.626938775510204,
+      "mixture_start": 9.097344997597226,
+      "mixture_end": 9.72428377310743,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_419186.wav",
+      "origin_start": 0.7796145124716554,
+      "origin_end": 3.0376190476190477,
+      "mixture_start": 0.5041170588412675,
+      "mixture_end": 2.762136909848431,
+      "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_162_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_162_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..7375482bdb4aeeb5307ab2917d580a55551a1d07
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_162_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_162_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "cricket"
+  ],
+  "audio_file": "kitchen_2dist_162_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p280/p280_157.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.3282766439909297,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_048.mp3",
+      "origin_start": 268.58419501133784,
+      "origin_end": 278.58419501133784,
+      "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_97898_2.wav",
+      "origin_start": 8.525532879818595,
+      "origin_end": 11.575532879818594,
+      "mixture_start": 2.6597185471491858,
+      "mixture_end": 5.7097292461254145,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_195617.wav",
+      "origin_start": 0.32709750566893425,
+      "origin_end": 3.540090702947846,
+      "mixture_start": 5.4279827557181415,
+      "mixture_end": 8.640981415650835,
+      "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 cricket",
+      "command_type": "remove_only",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove baby cry and cricket",
+      "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 cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cricket 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/kitchen_2dist_164_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_164_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..ae700c12c6f5bab076d0a8b1251b6e45df036127
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_164_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "kitchen_2dist_164_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "drill",
+    "siren"
+  ],
+  "audio_file": "kitchen_2dist_164_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_105.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9674376417233561,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_025.mp3",
+      "origin_start": 254.32868480725622,
+      "origin_end": 264.32868480725625,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "drill",
+      "display_name": "drill",
+      "original_path": "distractors/train/drill/fsd50k_386250.wav",
+      "origin_start": 0.9989795918367347,
+      "origin_end": 4.85108843537415,
+      "mixture_start": 1.5974286910550104,
+      "mixture_end": 5.449557523537948,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_1-76831-B-42.wav",
+      "origin_start": 1.590748299319728,
+      "origin_end": 4.382993197278911,
+      "mixture_start": 5.484281856092277,
+      "mixture_end": 8.276538349519674,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill",
+      "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 drill and siren",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep drill",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "drill",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove drill and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep drill and remove 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_2dist_169_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_169_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..14abdd35238d32959583fbfd6cd70149b8da134d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_169_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "kitchen_2dist_169_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "engine",
+    "cricket"
+  ],
+  "audio_file": "kitchen_2dist_169_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_325.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.010793650793651,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_106.mp3",
+      "origin_start": 210.04022675736962,
+      "origin_end": 220.04022675736962,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/esc-50_1-50455-A-44.wav",
+      "origin_start": 0.06979591836734694,
+      "origin_end": 2.890839002267574,
+      "mixture_start": 7.138179873537133,
+      "mixture_end": 9.959240698563848,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/train/cricket/fsd50k_32171.wav",
+      "origin_start": 11.443469387755101,
+      "origin_end": 13.686281179138321,
+      "mixture_start": 3.0835962774732444,
+      "mixture_end": 5.326417747652729,
+      "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 cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine 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 cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cricket 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_180_rep3.json b/data/audio_mixtures_no_speech/train/kitchen_2dist_180_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..530f6849f3b49957862e093c8a92bc406dc0f0f0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_2dist_180_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "kitchen_2dist_180_rep3",
+  "scene_name": "Kitchen",
+  "distractor_count": 2,
+  "distractors": [
+    "boom",
+    "cat"
+  ],
+  "audio_file": "kitchen_2dist_180_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p236/p236_472.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3499773242630386,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_003.mp3",
+      "origin_start": 122.70698412698412,
+      "origin_end": 132.70698412698414,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_93844.wav",
+      "origin_start": 2.366916099773243,
+      "origin_end": 5.412086167800454,
+      "mixture_start": 3.265810376855641,
+      "mixture_end": 6.3110009790280515,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/fsd50k_262312.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5108390022675737,
+      "mixture_start": 5.242272291456043,
+      "mixture_end": 5.753111293723617,
+      "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": "keep cat and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cat 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/kitchen_3dist_205_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_205_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..bec82038d3ca1a7484040d63ae049785b9abfb74
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_205_rep1.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "kitchen_3dist_205_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "doorbell",
+    "footsteps",
+    "slam"
+  ],
+  "audio_file": "kitchen_3dist_205_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p268/p268_395.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.31,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_127.mp3",
+      "origin_start": 67.81172335600907,
+      "origin_end": 77.81172335600907,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "doorbell",
+      "display_name": "doorbell",
+      "original_path": "distractors/train/doorbell/fsd50k_205949.wav",
+      "origin_start": 0.25770975056689344,
+      "origin_end": 3.3083219954648526,
+      "mixture_start": 1.3417434331990081,
+      "mixture_end": 4.392373301975159,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_66664.wav",
+      "origin_start": 2.640408163265306,
+      "origin_end": 4.679433106575964,
+      "mixture_start": 6.131839936735734,
+      "mixture_end": 8.170870282894823,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_151132.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7314285714285714,
+      "mixture_start": 6.099882867066837,
+      "mixture_end": 6.831311438495408,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "doorbell",
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove doorbell and footsteps and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and footsteps and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell",
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and slam and remove doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep doorbell and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep doorbell and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove doorbell and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove doorbell and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep doorbell and remove footsteps and slam",
+      "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_206_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_206_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..99ba595d0fb3a8b45128ece1045cd04046788cad
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_206_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "kitchen_3dist_206_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "engine",
+    "helicopter",
+    "doorbell"
+  ],
+  "audio_file": "kitchen_3dist_206_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_190.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.1605215419501134,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_069.mp3",
+      "origin_start": 225.2697052154195,
+      "origin_end": 235.2697052154195,
+      "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": 2.3040136054421767,
+      "origin_end": 4.390226757369614,
+      "mixture_start": 2.979663675943843,
+      "mixture_end": 5.065892463992968,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/fsd50k_187678.wav",
+      "origin_start": 0.9836507936507937,
+      "origin_end": 3.05578231292517,
+      "mixture_start": 7.439151964712491,
+      "mixture_end": 9.511295294811779,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "doorbell",
+      "display_name": "doorbell",
+      "original_path": "distractors/train/doorbell/fsd50k_403439.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1052154195011339,
+      "mixture_start": 1.3577424201437607,
+      "mixture_end": 2.462980515381856,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and doorbell",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and doorbell",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and helicopter and doorbell",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "doorbell"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "helicopter",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "doorbell"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and helicopter and doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "helicopter",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "doorbell"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove doorbell and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and keep helicopter and doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "doorbell"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep engine and doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and keep engine and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine and helicopter and keep doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove engine and doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter and doorbell 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_3dist_241_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_241_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..4628e6c7716672734909ca88403830e0488a9a97
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_241_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "kitchen_3dist_241_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "cat",
+    "fire_alarm",
+    "jackhammer"
+  ],
+  "audio_file": "kitchen_3dist_241_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p271/p271_149.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9661678004535148,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_011.mp3",
+      "origin_start": 146.38226757369614,
+      "origin_end": 156.38226757369614,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/fsd50k_262314.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.905578231292517,
+      "mixture_start": 4.3465831823009395,
+      "mixture_end": 5.2521614135934565,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/val/fire_alarm/fsd50k_270643.wav",
+      "origin_start": 3.676734693877551,
+      "origin_end": 7.026757369614512,
+      "mixture_start": 2.9310252911035,
+      "mixture_end": 6.281059992405283,
+      "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": 4.439330770856952,
+      "mixture_end": 5.066269546367156,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cat and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cat and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cat and fire alarm and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "fire_alarm",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cat and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "fire_alarm",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "fire_alarm",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and fire alarm and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat",
+        "fire_alarm",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and jackhammer and remove cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep cat and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep cat and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove cat and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and jackhammer and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and jackhammer 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/kitchen_3dist_251_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_251_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..d16836a05e87edf011dfdfe0a771df2de20635d0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_251_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "kitchen_3dist_251_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "alarm_clock",
+    "birds_chirping",
+    "car_horn"
+  ],
+  "audio_file": "kitchen_3dist_251_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p229/p229_366.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.058117913832199,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_014.mp3",
+      "origin_start": 47.085532879818594,
+      "origin_end": 57.085532879818594,
+      "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": 1.6710204081632654,
+      "origin_end": 5.551678004535147,
+      "mixture_start": 4.994329024703058,
+      "mixture_end": 8.87498912799907,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "birds_chirping",
+      "display_name": "birds chirping",
+      "original_path": "distractors/train/birds_chirping/esc-50_1-46040-A-14.wav",
+      "origin_start": 0.7804308390022676,
+      "origin_end": 4.3822222222222225,
+      "mixture_start": 0.91374620708188,
+      "mixture_end": 4.515557974416976,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_145577.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.4164172335600906,
+      "mixture_start": 3.727017573729403,
+      "mixture_end": 5.143434807289494,
+      "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_255_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_255_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..caeffb69098ca1412d86288dd39bb38b987bff3b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_255_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "kitchen_3dist_255_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "helicopter",
+    "jackhammer"
+  ],
+  "audio_file": "kitchen_3dist_255_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_093.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.654285714285714,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_054.mp3",
+      "origin_start": 108.67956916099773,
+      "origin_end": 118.67956916099773,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_341086.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8823582766439909,
+      "mixture_start": 5.195187349419671,
+      "mixture_end": 6.077545626063662,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/fsd50k_59277.wav",
+      "origin_start": 14.987868480725623,
+      "origin_end": 17.584761904761905,
+      "mixture_start": 6.547899846453398,
+      "mixture_end": 9.14480193739378,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/val/jackhammer/fsd50k_68080.wav",
+      "origin_start": 12.249319727891157,
+      "origin_end": 15.402902494331066,
+      "mixture_start": 1.0101207530372778,
+      "mixture_end": 4.1637248047999735,
+      "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 helicopter",
+      "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 helicopter",
+      "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 helicopter and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and helicopter 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 helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "helicopter"
+      ],
+      "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 helicopter and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and helicopter and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "helicopter",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and jackhammer and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and jackhammer and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and helicopter and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and helicopter and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and jackhammer and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter 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/kitchen_3dist_255_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_255_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..31e4eb2486144569e21448cc3cbd198c092913c1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_255_rep4.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "kitchen_3dist_255_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "helicopter",
+    "jackhammer"
+  ],
+  "audio_file": "kitchen_3dist_255_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p241/p241_258.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.1866666666666665,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_080.mp3",
+      "origin_start": 237.74204081632652,
+      "origin_end": 247.74204081632652,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/fsd50k_109639.wav",
+      "origin_start": 0.06616780045351474,
+      "origin_end": 2.771859410430839,
+      "mixture_start": 0.6367392147620426,
+      "mixture_end": 3.3424447557059334,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/fsd50k_93076.wav",
+      "origin_start": 5.577596371882086,
+      "origin_end": 9.567210884353742,
+      "mixture_start": 4.141994457907384,
+      "mixture_end": 8.131612733204605,
+      "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": 2.372292339355481,
+      "mixture_end": 2.883131341623055,
+      "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 helicopter",
+      "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 helicopter",
+      "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 helicopter and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and helicopter 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 helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "helicopter"
+      ],
+      "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 helicopter and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and helicopter and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "helicopter",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and jackhammer and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and jackhammer and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and helicopter and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and helicopter and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and jackhammer and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove helicopter 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/kitchen_3dist_258_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_258_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..4adaa9fda98c888f090f67c48849f920da3a618c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_258_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "kitchen_3dist_258_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "boom",
+    "doorbell",
+    "hammer"
+  ],
+  "audio_file": "kitchen_3dist_258_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p229/p229_249.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.4353061224489796,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_128.mp3",
+      "origin_start": 234.73807256235827,
+      "origin_end": 244.73807256235827,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_102734.wav",
+      "origin_start": 1.2436734693877551,
+      "origin_end": 4.320204081632653,
+      "mixture_start": 4.302145729970794,
+      "mixture_end": 7.3786827567443485,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "doorbell",
+      "display_name": "doorbell",
+      "original_path": "distractors/train/doorbell/fsd50k_196370.wav",
+      "origin_start": 1.29297052154195,
+      "origin_end": 3.872063492063492,
+      "mixture_start": 1.4838167089470302,
+      "mixture_end": 4.062914536203593,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_57322.wav",
+      "origin_start": 6.892403628117914,
+      "origin_end": 9.59392290249433,
+      "mixture_start": 7.13859092714603,
+      "mixture_end": 9.84012139640258,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and doorbell",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove boom and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell and hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and doorbell and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "doorbell",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and doorbell",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "doorbell",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "doorbell",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and doorbell and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "doorbell",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep doorbell",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep doorbell and hammer and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell",
+        "hammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove doorbell and keep boom and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and doorbell and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom",
+        "doorbell"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove boom and doorbell and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep doorbell and remove boom and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "doorbell"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove doorbell 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/kitchen_3dist_264_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_264_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..371e87856c111088d0e7818821453bbe333e7ee1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_264_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "kitchen_3dist_264_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "alarm_clock",
+    "dog",
+    "door_knock"
+  ],
+  "audio_file": "kitchen_3dist_264_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_209.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3938775510204082,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_MN5dmzXgGdQ_chunk_004.mp3",
+      "origin_start": 260.452925170068,
+      "origin_end": 270.452925170068,
+      "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_401132.wav",
+      "origin_start": 19.2297052154195,
+      "origin_end": 22.466848072562357,
+      "mixture_start": 0.1765247507917672,
+      "mixture_end": 3.4136837352190277,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "dog",
+      "display_name": "dog",
+      "original_path": "distractors/train/dog/fsd50k_119420.wav",
+      "origin_start": 0.1892063492063492,
+      "origin_end": 3.6960090702947848,
+      "mixture_start": 5.851984754196329,
+      "mixture_end": 9.35879839336129,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "door_knock",
+      "display_name": "door knock",
+      "original_path": "distractors/train/door_knock/fsd50k_193862.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5572789115646258,
+      "mixture_start": 3.2885115575094357,
+      "mixture_end": 3.8457904690740614,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove door knock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and dog",
+      "command_type": "remove_only",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and door knock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove dog and door knock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and dog and door knock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "dog",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and dog",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "dog",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep dog and door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "dog",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and dog and door knock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "dog",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "door_knock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep door knock and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove dog and keep door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove door knock and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep dog and door knock and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog",
+        "door_knock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and door knock and remove dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "door_knock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and dog and remove door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "dog"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and dog and keep door knock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "door_knock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and door knock and keep dog",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "dog"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove dog and door knock 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_274_rep1.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_274_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..bf59b2461d172c37af421f302ca47a571caaefbf
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_274_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "kitchen_3dist_274_rep1",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "engine",
+    "cat"
+  ],
+  "audio_file": "kitchen_3dist_274_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p243/p243_379.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.054603174603175,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_CQAUBlvYdbQ_chunk_053.mp3",
+      "origin_start": 281.96732426303856,
+      "origin_end": 291.96732426303856,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_96189.wav",
+      "origin_start": 1.7863945578231293,
+      "origin_end": 3.857324263038549,
+      "mixture_start": 3.4122982102387303,
+      "mixture_end": 5.483247280532332,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "engine",
+      "display_name": "engine",
+      "original_path": "distractors/train/engine/esc-50_2-106014-A-44.wav",
+      "origin_start": 0.4280725623582766,
+      "origin_end": 4.408344671201814,
+      "mixture_start": 0.016252368065428516,
+      "mixture_end": 3.996537665320358,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "cat",
+      "display_name": "cat",
+      "original_path": "distractors/train/cat/fsd50k_66510.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1609977324263039,
+      "mixture_start": 3.152553559240297,
+      "mixture_end": 4.313551291666601,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and engine",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove engine and cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and engine and cat",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "cat"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and engine",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "engine",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "engine",
+        "cat"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and engine and cat",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "engine",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "cat"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove engine and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cat and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cat and keep engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep engine and cat and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine",
+        "cat"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and cat and remove engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "cat"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cat and keep cough and engine",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "engine"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and engine and keep cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cat"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep engine and remove cough and cat",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "engine"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove engine 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/kitchen_3dist_275_rep2.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_275_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..9367ad19ab625c3a4a373c0e9ed459e31dd69c2a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_275_rep2.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "kitchen_3dist_275_rep2",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "helicopter",
+    "cricket"
+  ],
+  "audio_file": "kitchen_3dist_275_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p234/p234_211.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.817800453514739,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_098.mp3",
+      "origin_start": 63.728911564625854,
+      "origin_end": 73.72891156462585,
+      "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": 2.3358049886621317,
+      "origin_end": 5.36562358276644,
+      "mixture_start": 1.6494772802499875,
+      "mixture_end": 4.679297879155471,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/val/helicopter/esc-50_4-175000-A-40.wav",
+      "origin_start": 1.0631292517006803,
+      "origin_end": 4.189160997732427,
+      "mixture_start": 4.090490587121977,
+      "mixture_end": 7.216530547948356,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "cricket",
+      "display_name": "cricket",
+      "original_path": "distractors/val/cricket/fsd50k_182206.wav",
+      "origin_start": 0.3284580498866213,
+      "origin_end": 3.5036054421768705,
+      "mixture_start": 6.675105986949729,
+      "mixture_end": 9.850273920008874,
+      "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 helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and cricket",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and helicopter and cricket",
+      "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 helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "cricket"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and helicopter and cricket",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "helicopter",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cricket and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep helicopter and cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "cricket"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep applause and cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "cricket"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and helicopter and remove cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cricket and remove applause and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cricket"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove applause and cricket",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove helicopter and cricket",
+      "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_277_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_277_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..ed62a8436679843ba2e621af295a1dfa596c9232
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_277_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "kitchen_3dist_277_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "ringtone",
+    "computer_typing",
+    "gunshot"
+  ],
+  "audio_file": "kitchen_3dist_277_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_222.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.9265986394557824,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_010.mp3",
+      "origin_start": 188.98621315192744,
+      "origin_end": 198.98621315192744,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_56164.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6834467120181407,
+      "mixture_start": 4.36798115570642,
+      "mixture_end": 6.05142786772456,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/val/computer_typing/esc-50_4-172742-A-32.wav",
+      "origin_start": 0.03158730158730159,
+      "origin_end": 2.5455102040816326,
+      "mixture_start": 1.2241158305908661,
+      "mixture_end": 3.738053959004833,
+      "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": 7.985777089406023,
+      "mixture_end": 8.50822606899786,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove computer typing and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone and computer typing and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and computer typing and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove computer typing and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone 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 ringtone and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and computer typing and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and computer typing and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep computer typing and remove ringtone and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove computer typing 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/kitchen_3dist_290_rep4.json b/data/audio_mixtures_no_speech/train/kitchen_3dist_290_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..68040874251b0705f2182e19cd0ff694db5fee37
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/kitchen_3dist_290_rep4.json
@@ -0,0 +1,387 @@
+{
+  "mixture_id": "kitchen_3dist_290_rep4",
+  "scene_name": "Kitchen",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "glass_breaking",
+    "slam"
+  ],
+  "audio_file": "kitchen_3dist_290_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_211.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6664172335600906,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Kitchen/asmr_Kitchen_DoRSCsrKbq8_chunk_045.mp3",
+      "origin_start": 218.47666666666666,
+      "origin_end": 228.47666666666666,
+      "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": 0.8258956916099773,
+      "origin_end": 3.52156462585034,
+      "mixture_start": 1.9358130505515405,
+      "mixture_end": 4.631490014353238,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/val/glass_breaking/esc-50_4-204777-C-39.wav",
+      "origin_start": 0.07895691609977325,
+      "origin_end": 2.1444897959183673,
+      "mixture_start": 4.624738128407067,
+      "mixture_end": 6.690285290001149,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_161190.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.811156462585034,
+      "mixture_start": 7.942899880462613,
+      "mixture_end": 9.754056343047647,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "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",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and glass breaking",
+      "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": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and glass breaking 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",
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking",
+        "slam"
+      ],
+      "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",
+        "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",
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and glass breaking and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking 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",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove slam",
+      "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 slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and slam and remove glass breaking",
+      "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 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 slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove cellphone buzz vibrating alert and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove glass breaking 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/restaurant_1dist_006_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_006_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..4b28fd3dc7e362cd6ab2c3258342f300149467a1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_006_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_006_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "applause"
+  ],
+  "audio_file": "restaurant_1dist_006_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_317.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2053514739229025,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_004.mp3",
+      "origin_start": 168.52451247165533,
+      "origin_end": 178.52451247165533,
+      "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": 0.7882086167800454,
+      "origin_end": 4.296099773242631,
+      "mixture_start": 5.256795517937913,
+      "mixture_end": 8.764706575580451,
+      "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/restaurant_1dist_009_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_009_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..7724f4382a4dd609ed9a5b5879b91353c09e7ef0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_009_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "restaurant_1dist_009_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "boom"
+  ],
+  "audio_file": "restaurant_1dist_009_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p282/p282_359.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.543356009070295,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_011.mp3",
+      "origin_start": 82.3068253968254,
+      "origin_end": 92.3068253968254,
+      "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": 1.010246259668557,
+      "mixture_end": 2.9723324274690106,
+      "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/restaurant_1dist_020_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_020_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..0ea07c4f0239e40bd91aad99c26c149a5fa8e63f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_020_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "restaurant_1dist_020_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "restaurant_1dist_020_rep3.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/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_056.mp3",
+      "origin_start": 63.6775283446712,
+      "origin_end": 73.6775283446712,
+      "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_223182.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7198185941043084,
+      "mixture_start": 8.378284984092891,
+      "mixture_end": 9.0981035781972,
+      "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_035_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_035_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..f3c3554d4f56876db9c666aa7cf05450e6caf848
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_035_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_035_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "car_horn"
+  ],
+  "audio_file": "restaurant_1dist_035_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p257/p257_335.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.5822675736961451,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_023.mp3",
+      "origin_start": 66.87006802721089,
+      "origin_end": 76.87006802721089,
+      "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_49974.wav",
+      "origin_start": 0.03664399092970522,
+      "origin_end": 2.513718820861678,
+      "mixture_start": 4.317399125291921,
+      "mixture_end": 6.794488557654112,
+      "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_041_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_041_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..34bfb9319370d73f1088934291a8c01f444570ae
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_041_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_041_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "fireworks"
+  ],
+  "audio_file": "restaurant_1dist_041_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p236/p236_478.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.992018140589569,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_027.mp3",
+      "origin_start": 66.57637188208616,
+      "origin_end": 76.57637188208616,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "fireworks",
+      "display_name": "fireworks",
+      "original_path": "distractors/train/fireworks/fsd50k_388206.wav",
+      "origin_start": 5.4218820861678,
+      "origin_end": 7.817006802721089,
+      "mixture_start": 4.397800160671039,
+      "mixture_end": 6.792928858856512,
+      "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_046_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_046_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..c2bc1ee2962416faf5d5456b7d83c79a0d6de510
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_046_rep4.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_046_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "alarm_clock"
+  ],
+  "audio_file": "restaurant_1dist_046_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p281/p281_455.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.440045351473923,
+      "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": 154.2868934240363,
+      "origin_end": 164.2868934240363,
+      "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": 0.023741496598639455,
+      "origin_end": 2.2559410430839004,
+      "mixture_start": 4.816600043155496,
+      "mixture_end": 7.048818594486003,
+      "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_060_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_060_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..66aaae9968c0cc1986104b4717f9cc0878cb5fa7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_060_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "restaurant_1dist_060_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert"
+  ],
+  "audio_file": "restaurant_1dist_060_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_160.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9473242630385488,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_023.mp3",
+      "origin_start": 20.34861678004535,
+      "origin_end": 30.34861678004535,
+      "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": 4.512993197278911,
+      "origin_end": 8.164761904761905,
+      "mixture_start": 4.213328514431256,
+      "mixture_end": 7.865099651615638,
+      "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_068_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_068_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..e52bc1cca546ef56039253827b60e04f3c5cab80
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_068_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "restaurant_1dist_068_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "restaurant_1dist_068_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p262/p262_346.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.4589795918367345,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_017.mp3",
+      "origin_start": 127.70009070294785,
+      "origin_end": 137.70009070294785,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_148828.wav",
+      "origin_start": 0.08913832199546486,
+      "origin_end": 2.3740589569161,
+      "mixture_start": 1.8027766280582822,
+      "mixture_end": 4.087701498470852,
+      "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/restaurant_1dist_068_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_068_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..ccff193b06821916527539cb607261872eab8876
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_068_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "restaurant_1dist_068_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "restaurant_1dist_068_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p262/p262_009.wav",
+      "origin_start": 0.0,
+      "origin_end": 5.931269841269842,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_017.mp3",
+      "origin_start": 76.07922902494332,
+      "origin_end": 86.07922902494332,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_36815.wav",
+      "origin_start": 3.476417233560091,
+      "origin_end": 5.990612244897959,
+      "mixture_start": 2.3770121269430895,
+      "mixture_end": 4.891216705586569,
+      "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/restaurant_1dist_073_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_1dist_073_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..68ac255ef48dc3e348f7bfa472739be95c24c92d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_1dist_073_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "restaurant_1dist_073_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 1,
+  "distractors": [
+    "alarm_clock"
+  ],
+  "audio_file": "restaurant_1dist_073_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p284/p284_340.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.589342403628118,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_019.mp3",
+      "origin_start": 279.0806575963719,
+      "origin_end": 289.0806575963719,
+      "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_401132.wav",
+      "origin_start": 14.472947845804988,
+      "origin_end": 18.07002267573696,
+      "mixture_start": 0.6451977347263596,
+      "mixture_end": 4.242286009766565,
+      "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_2dist_114_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_114_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..366044508085d74aa498e208d0ced2e3e546fee8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_114_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "restaurant_2dist_114_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "fire_alarm"
+  ],
+  "audio_file": "restaurant_2dist_114_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p260/p260_002.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.75718820861678,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_006.mp3",
+      "origin_start": 140.1730612244898,
+      "origin_end": 150.1730612244898,
+      "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_3-120526-A-37.wav",
+      "origin_start": 0.7324036281179138,
+      "origin_end": 3.0699773242630384,
+      "mixture_start": 2.107813346340009,
+      "mixture_end": 4.445389791103194,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 7.4275056689342405,
+      "origin_end": 11.263560090702947,
+      "mixture_start": 5.3464605205698295,
+      "mixture_end": 9.182525803828531,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        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": [],
+      "target_channels": []
+    },
+    {
+      "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": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        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/restaurant_2dist_130_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_130_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..14a7df8b3ff3dc179878c6253fd83c49fcfa5651
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_130_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "restaurant_2dist_130_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "glass_breaking",
+    "hammer"
+  ],
+  "audio_file": "restaurant_2dist_130_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p257/p257_289.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.248004535147392,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_042.mp3",
+      "origin_start": 27.811043083900227,
+      "origin_end": 37.81104308390022,
+      "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_173611.wav",
+      "origin_start": 0.2301814058956916,
+      "origin_end": 2.591859410430839,
+      "mixture_start": 3.2281978415624497,
+      "mixture_end": 5.589879517963158,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_407269.wav",
+      "origin_start": 16.89673469387755,
+      "origin_end": 20.395419501133787,
+      "mixture_start": 5.357009118890851,
+      "mixture_end": 8.855709636642501,
+      "channel": 3
+    }
+  },
+  "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": "remove hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and hammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "glass_breaking",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep glass breaking",
+      "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/restaurant_2dist_138_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_138_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..844a29c009d32f70cf2e0223a727169122c8c7f5
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_138_rep3.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "restaurant_2dist_138_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "boom",
+    "hammer"
+  ],
+  "audio_file": "restaurant_2dist_138_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p228/p228_237.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.825396825396825,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_006.mp3",
+      "origin_start": 263.0725396825397,
+      "origin_end": 273.0725396825397,
+      "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": 0.366768632242591,
+      "mixture_end": 1.4464965233990534,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_212391.wav",
+      "origin_start": 4.339546485260771,
+      "origin_end": 7.205532879818594,
+      "mixture_start": 6.367209846041057,
+      "mixture_end": 9.233206004228473,
+      "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 hammer",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove boom and hammer",
+      "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 hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep boom and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove 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/restaurant_2dist_182_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_182_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..2c80d525d6d6dc39b9f81e4c06d0de29221db246
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_182_rep4.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "restaurant_2dist_182_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "footsteps"
+  ],
+  "audio_file": "restaurant_2dist_182_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_131.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.3319501133786846,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_043.mp3",
+      "origin_start": 115.46489795918367,
+      "origin_end": 125.46489795918367,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_242581.wav",
+      "origin_start": 11.147596371882086,
+      "origin_end": 13.980430839002267,
+      "mixture_start": 0.6253894268335098,
+      "mixture_end": 3.458225637236672,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_58454.wav",
+      "origin_start": 13.94421768707483,
+      "origin_end": 16.404308390022674,
+      "mixture_start": 6.144383170953551,
+      "mixture_end": 8.60448181105789,
+      "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/restaurant_2dist_183_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_183_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..dc015adc47f2b738c7b9e354085ff816a1adbdbc
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_183_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "restaurant_2dist_183_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "fire_alarm",
+    "gunshot"
+  ],
+  "audio_file": "restaurant_2dist_183_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_209.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.26984126984127,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_016.mp3",
+      "origin_start": 236.26721088435374,
+      "origin_end": 246.26721088435374,
+      "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": 3.560748299319728,
+      "origin_end": 6.646757369614512,
+      "mixture_start": 2.50680059621901,
+      "mixture_end": 5.592815953304937,
+      "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": 1.2445643819369223,
+      "mixture_end": 1.9876029306897567,
+      "channel": 3
+    }
+  },
+  "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 fire alarm and gunshot",
+      "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 fire alarm and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot 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/restaurant_2dist_188_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_188_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..9d98425024e66207159f9f0f6af6427db731db3e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_188_rep1.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "restaurant_2dist_188_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "sneeze"
+  ],
+  "audio_file": "restaurant_2dist_188_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p264/p264_048.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.100340136054422,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_U2vXZQiBPkE_chunk_000.mp3",
+      "origin_start": 95.5367573696145,
+      "origin_end": 105.5367573696145,
+      "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": 0.04521541950113379,
+      "origin_end": 3.4899773242630387,
+      "mixture_start": 4.166483503243025,
+      "mixture_end": 7.6112616042459775,
+      "channel": 2
+    },
+    "distractor_2": {
+      "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": 4.669144392006639,
+      "mixture_end": 5.203203348922739,
+      "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_2dist_198_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_2dist_198_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..c2fbb123342e5d5c39322429b359dbfe4de24b1b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_2dist_198_rep4.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "restaurant_2dist_198_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "siren"
+  ],
+  "audio_file": "restaurant_2dist_198_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p274/p274_373.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.5221995464852607,
+      "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": 62.27988662131519,
+      "origin_end": 72.2798866213152,
+      "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_223505.wav",
+      "origin_start": 5.350702947845805,
+      "origin_end": 8.783151927437642,
+      "mixture_start": 5.469610784416288,
+      "mixture_end": 8.902078595015603,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_3-62878-B-42.wav",
+      "origin_start": 0.0072562358276643995,
+      "origin_end": 2.393764172335601,
+      "mixture_start": 0.298194074750294,
+      "mixture_end": 2.684712422205008,
+      "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/restaurant_3dist_218_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_218_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..ee501bdc22685b2d9f6718d5f139f80f56aecc2d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_218_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "restaurant_3dist_218_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "cough",
+    "alarm_clock"
+  ],
+  "audio_file": "restaurant_3dist_218_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_354.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.5191609977324263,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_058.mp3",
+      "origin_start": 259.19142857142856,
+      "origin_end": 269.19142857142856,
+      "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": 2.0985714285714288,
+      "origin_end": 4.856712018140589,
+      "mixture_start": 2.5854736775536518,
+      "mixture_end": 5.343631971117039,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_180045.wav",
+      "origin_start": 0.1742857142857143,
+      "origin_end": 2.316734693877551,
+      "mixture_start": 0.6972215881081752,
+      "mixture_end": 2.8396930473658304,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_2-78562-B-37.wav",
+      "origin_start": 0.14183673469387756,
+      "origin_end": 2.3472789115646258,
+      "mixture_start": 5.026473654103797,
+      "mixture_end": 7.231937281371565,
+      "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 cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and cough",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and cough 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 cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cough"
+      ],
+      "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,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and cough and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cough and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cough and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep cough and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep car alarm and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and cough and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove car alarm and cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and alarm clock and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove cough and alarm clock",
+      "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_239_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_239_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..f8cb9ea12450844ddaf0c08604951808661055dc
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_239_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "restaurant_3dist_239_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "car_horn",
+    "slam"
+  ],
+  "audio_file": "restaurant_3dist_239_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p263/p263_420.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3200226757369613,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_013.mp3",
+      "origin_start": 216.5614739229025,
+      "origin_end": 226.5614739229025,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_386210.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.7298866213151927,
+      "mixture_start": 4.973825288035291,
+      "mixture_end": 6.703711909350484,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "car_horn",
+      "display_name": "car horn",
+      "original_path": "distractors/train/car_horn/fsd50k_21687.wav",
+      "origin_start": 0.23435374149659863,
+      "origin_end": 2.385487528344671,
+      "mixture_start": 3.386414590628283,
+      "mixture_end": 5.537569386063773,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_211933.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.9520181405895691,
+      "mixture_start": 3.37309561444721,
+      "mixture_end": 4.32511375503678,
+      "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 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 cough and car horn",
+      "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 car horn and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and car horn 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 car horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        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 slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car horn and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_horn",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and car horn and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "car_horn",
+        "slam"
+      ],
+      "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 slam and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep slam and remove car horn",
+      "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": "remove slam and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car horn and slam and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car horn and keep cough and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep cough and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "car_horn"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove cough and car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and slam and keep car horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_horn"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove car horn and slam",
+      "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_254_rep4.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_254_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..30d71bf3a363f58bced66570b50395017c8663d6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_254_rep4.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "restaurant_3dist_254_rep4",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "car_alarm",
+    "helicopter",
+    "footsteps"
+  ],
+  "audio_file": "restaurant_3dist_254_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_139.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2860997732426305,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_FWHhmNPhRmM_chunk_030.mp3",
+      "origin_start": 41.27204081632653,
+      "origin_end": 51.27204081632653,
+      "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": 0.5107256235827664,
+      "origin_end": 3.401201814058957,
+      "mixture_start": 4.158267335571652,
+      "mixture_end": 7.04875414083598,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/val/helicopter/fsd50k_162367.wav",
+      "origin_start": 5.01875283446712,
+      "origin_end": 8.505396825396826,
+      "mixture_start": 0.5309518342650159,
+      "mixture_end": 4.017612456473404,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_422745.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0731519274376418,
+      "mixture_start": 7.006584856473554,
+      "mixture_end": 8.079736783911196,
+      "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 helicopter",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and helicopter",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove car alarm and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove helicopter and footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove car alarm and helicopter and footsteps",
+      "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 helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and helicopter and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "car_alarm",
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep helicopter and footsteps and remove car alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "footsteps"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep car alarm and footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove footsteps and keep car alarm and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "car_alarm",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and remove car alarm and helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove car alarm and footsteps and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep car alarm and remove helicopter and footsteps",
+      "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_259_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_259_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..638fc9f3d86b68b6e3b5bb43d5c757ee6f889ab8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_259_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "restaurant_3dist_259_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "cough",
+    "ringtone"
+  ],
+  "audio_file": "restaurant_3dist_259_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_305.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.263333333333333,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_058.mp3",
+      "origin_start": 117.71163265306123,
+      "origin_end": 127.71163265306123,
+      "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": 0.5204761904761904,
+      "origin_end": 2.835714285714286,
+      "mixture_start": 3.7445317798429554,
+      "mixture_end": 6.059784061671798,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/fsd50k_125418.wav",
+      "origin_start": 0.23281179138321995,
+      "origin_end": 2.7050566893424035,
+      "mixture_start": 6.526910916427142,
+      "mixture_end": 8.999173072930102,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_352663.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.172607709750567,
+      "mixture_start": 2.044757419786503,
+      "mixture_end": 3.21736512953707,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "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 cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cough 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,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "ringtone"
+      ],
+      "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"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cough and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep cough and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and ringtone and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cough and remove ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cough and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove cellphone buzz vibrating alert and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and 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_3dist_272_rep2.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_272_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..7fa194496967dd68f529dfbba6cc4b5e684e3f46
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_272_rep2.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "restaurant_3dist_272_rep2",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "fire_alarm",
+    "gunshot"
+  ],
+  "audio_file": "restaurant_3dist_272_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_326.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.47546485260771,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_061.mp3",
+      "origin_start": 224.02947845804988,
+      "origin_end": 234.02947845804988,
+      "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_1.wav",
+      "origin_start": 0.5902721088435374,
+      "origin_end": 3.4004761904761907,
+      "mixture_start": 2.363370831628983,
+      "mixture_end": 5.173588726729295,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/val/fire_alarm/fsd50k_270643.wav",
+      "origin_start": 3.7400907029478456,
+      "origin_end": 6.396281179138322,
+      "mixture_start": 0.3398933976323895,
+      "mixture_end": 2.9960955557322677,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_147901.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5688888888888889,
+      "mixture_start": 8.652243348659416,
+      "mixture_end": 9.221132237548305,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "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 baby cry and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry 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 baby cry and fire alarm and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "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 baby cry and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "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 baby cry and fire alarm and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "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 baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "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": "remove baby cry and keep fire alarm and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and gunshot and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep baby cry and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove baby cry and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and gunshot and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove fire alarm 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_3dist_296_rep1.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_296_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..bf50670edfa062fa4d97840d6a389627925d879e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_296_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "restaurant_3dist_296_rep1",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "helicopter",
+    "jackhammer"
+  ],
+  "audio_file": "restaurant_3dist_296_rep1.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/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_045.mp3",
+      "origin_start": 122.96920634920635,
+      "origin_end": 132.96920634920636,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_242580.wav",
+      "origin_start": 2.669251700680272,
+      "origin_end": 5.1708616780045356,
+      "mixture_start": 0.6033366590004507,
+      "mixture_end": 3.104962738648068,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "helicopter",
+      "display_name": "helicopter",
+      "original_path": "distractors/train/helicopter/fsd50k_154926.wav",
+      "origin_start": 2.8666666666666667,
+      "origin_end": 6.02827664399093,
+      "mixture_start": 4.232196673974236,
+      "mixture_end": 7.393806672438778,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_146261.wav",
+      "origin_start": 1.1990929705215418,
+      "origin_end": 3.2469160997732427,
+      "mixture_start": 2.3562415271532977,
+      "mixture_end": 4.404070466600418,
+      "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 helicopter",
+      "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 helicopter",
+      "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 helicopter and jackhammer",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and helicopter 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 helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and helicopter",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "helicopter"
+      ],
+      "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 helicopter and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "helicopter",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and helicopter and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "helicopter",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove helicopter",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove helicopter 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"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep helicopter and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter",
+        "jackhammer"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove helicopter and keep applause and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and helicopter and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "helicopter"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and helicopter and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep helicopter and remove applause and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "helicopter"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove helicopter 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/restaurant_3dist_299_rep3.json b/data/audio_mixtures_no_speech/train/restaurant_3dist_299_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..ff6aed913179a99bdb6a7c59dff3efd8fba0e290
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/restaurant_3dist_299_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "restaurant_3dist_299_rep3",
+  "scene_name": "Restaurant",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "baby_cry",
+    "fire_alarm"
+  ],
+  "audio_file": "restaurant_3dist_299_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p272/p272_285.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.5218140589569162,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Restaurant/asmr_Restaurant_LvB-6uM2tik_chunk_023.mp3",
+      "origin_start": 92.1465306122449,
+      "origin_end": 102.1465306122449,
+      "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": 9.278004535147392,
+      "origin_end": 12.901315192743764,
+      "mixture_start": 4.854642266307713,
+      "mixture_end": 8.47796516225296,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_58741_2.wav",
+      "origin_start": 7.628843537414966,
+      "origin_end": 9.802698412698414,
+      "mixture_start": 2.489066352309799,
+      "mixture_end": 4.662924663173019,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/val/fire_alarm/fsd50k_270643.wav",
+      "origin_start": 1.160498866213152,
+      "origin_end": 3.659546485260771,
+      "mixture_start": 0.7438733439069815,
+      "mixture_end": 3.242933208785058,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "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 applause and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and 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": "remove applause and baby cry and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "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 applause and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "baby_cry",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and baby cry and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "baby_cry",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and fire alarm and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep applause and fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and baby cry and remove fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove applause and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and fire alarm and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove baby cry and fire alarm 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_1dist_014_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_014_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..fb4c66d75602a1a3b8dd2ac14f51bc84d393aa6d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_014_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "supermarket_1dist_014_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "fire_alarm"
+  ],
+  "audio_file": "supermarket_1dist_014_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p283/p283_314.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.271043083900227,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_Dp9yBndP-1A_chunk_012.mp3",
+      "origin_start": 254.91780045351473,
+      "origin_end": 264.91780045351476,
+      "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": 8.812517006802722,
+      "origin_end": 11.058095238095238,
+      "mixture_start": 5.733642446070219,
+      "mixture_end": 7.979233999483598,
+      "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_018_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_018_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..7855f36e9c4d685b92b02c7e2867bc03030e40e0
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_018_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "supermarket_1dist_018_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "supermarket_1dist_018_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p285/p285_223.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.8411791383219955,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_119.mp3",
+      "origin_start": 64.79149659863945,
+      "origin_end": 74.79149659863945,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_128979.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.474467120181406,
+      "mixture_start": 2.449741381624838,
+      "mixture_end": 3.924208501806244,
+      "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/supermarket_1dist_047_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_047_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..31a9050afdc9dac2f405115874f3548357f35757
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_047_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_047_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "supermarket_1dist_047_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p282/p282_340.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.757392290249433,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_000.mp3",
+      "origin_start": 29.06734693877551,
+      "origin_end": 39.06734693877551,
+      "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_31528.wav",
+      "origin_start": 2.8332426303854876,
+      "origin_end": 6.012244897959183,
+      "mixture_start": 1.3458741754932046,
+      "mixture_end": 4.524884895987567,
+      "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_055_rep4.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_055_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..314e657aed6b37aa05e287ddd0865ceb67eec3b3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_055_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "supermarket_1dist_055_rep4",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "supermarket_1dist_055_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_071.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.4145578231292517,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_009.mp3",
+      "origin_start": 288.3747619047619,
+      "origin_end": 298.3747619047619,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_234615.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.5905668934240362,
+      "mixture_start": 0.08535962320333765,
+      "mixture_end": 1.6759265166273738,
+      "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/supermarket_1dist_069_rep1.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_069_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..aa40ed62b9c566bd1916fb20b23c70748a9720f2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_069_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "supermarket_1dist_069_rep1",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "supermarket_1dist_069_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_419.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.4163492063492065,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_000.mp3",
+      "origin_start": 40.59308390022676,
+      "origin_end": 50.59308390022676,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_352659.wav",
+      "origin_start": 0.011768707482993197,
+      "origin_end": 2.020340136054422,
+      "mixture_start": 1.4427960076516377,
+      "mixture_end": 3.451387110349626,
+      "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_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_069_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..fc7c28f399894b6ea6347d892aa84fbe8f98468a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_069_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "supermarket_1dist_069_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "supermarket_1dist_069_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p258/p258_366.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.52514739229025,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_023.mp3",
+      "origin_start": 234.41625850340137,
+      "origin_end": 244.41625850340137,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_404758.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.2887074829931973,
+      "mixture_start": 1.9422378622898662,
+      "mixture_end": 3.2309453452830637,
+      "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_076_rep1.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_076_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..23d4d777bb311842567b72ab63e4f3324b7cae6e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_076_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_076_rep1",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "jackhammer"
+  ],
+  "audio_file": "supermarket_1dist_076_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_388.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.989591836734694,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_100.mp3",
+      "origin_start": 287.86997732426306,
+      "origin_end": 297.86997732426306,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_386330.wav",
+      "origin_start": 6.247369614512472,
+      "origin_end": 9.324240362811791,
+      "mixture_start": 0.9675760591979135,
+      "mixture_end": 4.044454246457594,
+      "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_081_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_081_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..d9dc2077caaf22e101b125367118e52fbc4daa31
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_081_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_081_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "supermarket_1dist_081_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p257/p257_013.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.458208616780045,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_6HPYhhWjv-8_chunk_007.mp3",
+      "origin_start": 83.60009070294785,
+      "origin_end": 93.60009070294785,
+      "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_211527_3.wav",
+      "origin_start": 6.3474149659863945,
+      "origin_end": 9.496303854875283,
+      "mixture_start": 0.5270578864152059,
+      "mixture_end": 3.6759469962482068,
+      "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_082_rep4.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_082_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..c795212c9f5540f3547c5f88b91f7503d805631d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_082_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "supermarket_1dist_082_rep4",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "boom"
+  ],
+  "audio_file": "supermarket_1dist_082_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p236/p236_454.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.860294784580499,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_006.mp3",
+      "origin_start": 41.41068027210884,
+      "origin_end": 51.41068027210884,
+      "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": 1.0276773040015676,
+      "mixture_end": 1.7707158527544022,
+      "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/supermarket_1dist_089_rep4.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_089_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..738b8c00203b4ca5d80d012713c254629facda61
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_089_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "supermarket_1dist_089_rep4",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "fire_alarm"
+  ],
+  "audio_file": "supermarket_1dist_089_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_361.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.018866213151927,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_6HPYhhWjv-8_chunk_024.mp3",
+      "origin_start": 171.22927437641724,
+      "origin_end": 181.22927437641724,
+      "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": 4.017573696145124,
+      "origin_end": 7.515850340136055,
+      "mixture_start": 5.796867563286949,
+      "mixture_end": 9.2951576390213,
+      "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_097_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_097_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..cb3065743c96cec0269f92e5dbebcbc6261bfa80
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_097_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "supermarket_1dist_097_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "supermarket_1dist_097_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p277/p277_094.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.8813151927437641,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_031.mp3",
+      "origin_start": 233.76242630385488,
+      "origin_end": 243.76242630385488,
+      "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_58741_1.wav",
+      "origin_start": 14.199342403628117,
+      "origin_end": 16.80439909297052,
+      "mixture_start": 1.2113594668555498,
+      "mixture_end": 3.8164348707314613,
+      "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_098_rep1.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_098_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..032c2d4af558edef896207ac606c414d636e6193
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_098_rep1.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "supermarket_1dist_098_rep1",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "supermarket_1dist_098_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_270.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.3087301587301585,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_116.mp3",
+      "origin_start": 69.20575963718821,
+      "origin_end": 79.20575963718821,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_368805.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.5209070294784581,
+      "mixture_start": 5.107236753848226,
+      "mixture_end": 6.628143783326684,
+      "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/supermarket_1dist_099_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_1dist_099_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..d67d0ca12e2d276cfa5becf5015a49d8bc20bc1d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_1dist_099_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "supermarket_1dist_099_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "supermarket_1dist_099_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p267/p267_405.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.100136054421768,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_111.mp3",
+      "origin_start": 58.73721088435374,
+      "origin_end": 68.73721088435374,
+      "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": 4.580007634504316,
+      "mixture_end": 5.648125548336515,
+      "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_2dist_101_rep1.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_101_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..ed66cc2690c82236e34007a9fca4196bb31ccc36
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_101_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "supermarket_2dist_101_rep1",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "cough"
+  ],
+  "audio_file": "supermarket_2dist_101_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_074.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9903854875283447,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_Dp9yBndP-1A_chunk_011.mp3",
+      "origin_start": 100.44362811791383,
+      "origin_end": 110.44362811791383,
+      "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_223182.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7198185941043084,
+      "mixture_start": 5.305249190284231,
+      "mixture_end": 6.025067784388539,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_331059.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.592108843537415,
+      "mixture_start": 6.839386654829032,
+      "mixture_end": 7.431495498366447,
+      "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": "keep cough and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough 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_2dist_120_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_120_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..8127700edaf17b9cd152d6150fb089c984164b97
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_120_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "supermarket_2dist_120_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "fire_alarm"
+  ],
+  "audio_file": "supermarket_2dist_120_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_339.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.16031746031746,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Supermarket/asmr_Supermarket_6HPYhhWjv-8_chunk_011.mp3",
+      "origin_start": 186.92201814058956,
+      "origin_end": 196.92201814058956,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_2-119102-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5340362811791384,
+      "mixture_start": 8.000585319302779,
+      "mixture_end": 8.534644276218879,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_124734.wav",
+      "origin_start": 3.7641950113378684,
+      "origin_end": 5.952834467120182,
+      "mixture_start": 5.973023091242846,
+      "mixture_end": 8.161677094792863,
+      "channel": 3
+    }
+  },
+  "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 sneeze 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,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep fire alarm",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove 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/supermarket_2dist_143_rep1.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_143_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..2a69786216ac5f3374c8d0ae81f94667bde3c46d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_143_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "supermarket_2dist_143_rep1",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "hammer",
+    "siren"
+  ],
+  "audio_file": "supermarket_2dist_143_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_178.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.71265306122449,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_015.mp3",
+      "origin_start": 86.05283446712018,
+      "origin_end": 96.05283446712018,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_378590.wav",
+      "origin_start": 0.08487528344671202,
+      "origin_end": 3.0137868480725625,
+      "mixture_start": 5.124263305782458,
+      "mixture_end": 8.053188869361055,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/val/siren/esc-50_4-90014-A-42.wav",
+      "origin_start": 0.2072108843537415,
+      "origin_end": 2.7689342403628117,
+      "mixture_start": 7.3255007269673476,
+      "mixture_end": 9.887236180435607,
+      "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": "keep siren and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove siren 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/supermarket_2dist_144_rep4.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_144_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..ae382c9a065cba8f94cf57da7c32a5b2018ee2e3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_144_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "supermarket_2dist_144_rep4",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "siren"
+  ],
+  "audio_file": "supermarket_2dist_144_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_228.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.333219954648526,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Supermarket/asmr_Supermarket_6HPYhhWjv-8_chunk_025.mp3",
+      "origin_start": 256.7277324263039,
+      "origin_end": 266.7277324263039,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/esc-50_2-108017-A-24.wav",
+      "origin_start": 1.0085714285714287,
+      "origin_end": 3.4407709750566893,
+      "mixture_start": 4.522476798242943,
+      "mixture_end": 6.954679044592603,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_2-70939-A-42.wav",
+      "origin_start": 0.27648526077097507,
+      "origin_end": 3.888526077097506,
+      "mixture_start": 0.7048471933956145,
+      "mixture_end": 4.3168923195706235,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "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 cough 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,
+        3
+      ]
+    },
+    {
+      "user_input": "keep siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove siren",
+      "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_2dist_157_rep1.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_157_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..8f81564e30d83fca6af5fb52bc0a5e521bd09890
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_157_rep1.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "supermarket_2dist_157_rep1",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "alarm_clock",
+    "fire_alarm"
+  ],
+  "audio_file": "supermarket_2dist_157_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_062.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.992018140589569,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_116.mp3",
+      "origin_start": 130.32909297052154,
+      "origin_end": 140.32909297052154,
+      "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": 5.669591836734694,
+      "origin_end": 7.759546485260771,
+      "mixture_start": 4.137412446613116,
+      "mixture_end": 6.227377481769498,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_124734.wav",
+      "origin_start": 1.0720408163265307,
+      "origin_end": 3.405124716553288,
+      "mixture_start": 1.36137105625727,
+      "mixture_end": 3.694463044558405,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        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": [],
+      "target_channels": []
+    },
+    {
+      "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": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        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": "keep fire alarm and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm 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_170_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_170_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..fe394bca5417844390bac5a8190726976efa7d9c
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_170_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "supermarket_2dist_170_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "baby_cry",
+    "fire_alarm"
+  ],
+  "audio_file": "supermarket_2dist_170_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p237/p237_289.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.7330839002267573,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_021.mp3",
+      "origin_start": 263.5825850340136,
+      "origin_end": 273.5825850340136,
+      "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": 4.301859410430839,
+      "origin_end": 7.006825396825397,
+      "mixture_start": 0.49549360656076846,
+      "mixture_end": 3.2004752327014314,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/val/fire_alarm/fsd50k_270643.wav",
+      "origin_start": 1.6158956916099774,
+      "origin_end": 4.213265306122449,
+      "mixture_start": 6.547710355459627,
+      "mixture_end": 9.145094694741465,
+      "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_196_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_2dist_196_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..c9282a1a936eac84752d1caa305fc449d3c82ac2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_2dist_196_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "supermarket_2dist_196_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "fire_alarm"
+  ],
+  "audio_file": "supermarket_2dist_196_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_225.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.092721088435374,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_029.mp3",
+      "origin_start": 85.5214739229025,
+      "origin_end": 95.5214739229025,
+      "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": 7.477619047619048,
+      "origin_end": 11.370113378684808,
+      "mixture_start": 1.8685531484430302,
+      "mixture_end": 5.7610660821332385,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 7.797120181405896,
+      "origin_end": 10.001451247165534,
+      "mixture_start": 5.8089990405165635,
+      "mixture_end": 8.013341005055528,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "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 applause and fire alarm",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "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 applause and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm 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_211_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_211_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..ede4419cc80c03a1515629b6d2b2793d1ef8c523
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_211_rep3.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "supermarket_3dist_211_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "baby_cry",
+    "hammer",
+    "slam"
+  ],
+  "audio_file": "supermarket_3dist_211_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_155.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.011043083900227,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_074.mp3",
+      "origin_start": 147.8744217687075,
+      "origin_end": 157.8744217687075,
+      "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_13803.wav",
+      "origin_start": 3.3262358276643993,
+      "origin_end": 6.057573696145124,
+      "mixture_start": 0.10744905976198597,
+      "mixture_end": 2.8388010139246815,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "hammer",
+      "display_name": "hammer",
+      "original_path": "distractors/train/hammer/fsd50k_379013.wav",
+      "origin_start": 0.04199546485260771,
+      "origin_end": 2.1580725623582766,
+      "mixture_start": 6.387286967283616,
+      "mixture_end": 8.50338004544199,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_390976.wav",
+      "origin_start": 0.07802721088435374,
+      "origin_end": 2.341995464852608,
+      "mixture_start": 7.702011631801116,
+      "mixture_end": 9.965991739137108,
+      "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 hammer",
+      "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 hammer",
+      "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 hammer and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and hammer 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 hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and hammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "hammer",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and hammer and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "hammer",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove hammer and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep hammer and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep hammer and slam and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and slam and remove hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep baby cry and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "hammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove baby cry and hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and slam and keep hammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "hammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove hammer and slam 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_225_rep1.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_225_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..538e39141ec47e43738e2446283b8878b5ac53eb
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_225_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "supermarket_3dist_225_rep1",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "cough",
+    "alarm_clock"
+  ],
+  "audio_file": "supermarket_3dist_225_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p232/p232_170.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.562698412698413,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/val/Supermarket/asmr_Supermarket_6HPYhhWjv-8_chunk_011.mp3",
+      "origin_start": 282.11897959183676,
+      "origin_end": 292.11897959183676,
+      "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": 2.9131746031746033,
+      "origin_end": 6.819637188208617,
+      "mixture_start": 4.344319322410135,
+      "mixture_end": 8.250783100692619,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_19122.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5903854875283446,
+      "mixture_start": 3.2645674311812787,
+      "mixture_end": 3.8549529187096234,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_361856.wav",
+      "origin_start": 12.538027210884353,
+      "origin_end": 14.603741496598639,
+      "mixture_start": 1.5874685596915918,
+      "mixture_end": 3.6531955858895193,
+      "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 alarm clock",
+      "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 alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cough 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 cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "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 cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "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 cough and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cough and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "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 cough and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and alarm clock and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep cellphone buzz vibrating alert and 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 cough and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cough and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove cellphone buzz vibrating alert and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove cough and 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/supermarket_3dist_255_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_255_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..0707010d1cdf7429e3feadad3dc7dfae54ddaec1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_255_rep3.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "supermarket_3dist_255_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "sneeze",
+    "baby_cry"
+  ],
+  "audio_file": "supermarket_3dist_255_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p236/p236_351.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.8174149659863947,
+      "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": 53.026757369614515,
+      "origin_end": 63.026757369614515,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_19023.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1029478458049886,
+      "mixture_start": 1.8452278110157807,
+      "mixture_end": 2.9481756568207693,
+      "channel": 2
+    },
+    "distractor_2": {
+      "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": 4.636502691206182,
+      "mixture_end": 5.286661421364912,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/val/baby_cry/disco_noises_268217.wav",
+      "origin_start": 4.28875283446712,
+      "origin_end": 6.717460317460318,
+      "mixture_start": 2.4102347376302538,
+      "mixture_end": 4.838943863509998,
+      "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 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 cough and sneeze",
+      "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 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"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "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"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "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"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep sneeze and baby cry",
+      "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": "remove baby cry and keep cough and sneeze",
+      "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": "keep sneeze and remove cough and baby cry",
+      "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/supermarket_3dist_259_rep3.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_259_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..eb4756abb329bc83f335f904c0609371e1108731
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_259_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "supermarket_3dist_259_rep3",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "ringtone",
+    "slam"
+  ],
+  "audio_file": "supermarket_3dist_259_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p275/p275_349.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.6689342403628118,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_050.mp3",
+      "origin_start": 179.52172335600906,
+      "origin_end": 189.52172335600906,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/esc-50_2-108017-A-24.wav",
+      "origin_start": 0.17952380952380953,
+      "origin_end": 3.412063492063492,
+      "mixture_start": 3.5385987801733827,
+      "mixture_end": 6.7711522036774845,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_122266.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5589342403628118,
+      "mixture_start": 3.10721046688258,
+      "mixture_end": 3.6661447072453917,
+      "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": 7.273320246371064,
+      "mixture_end": 8.353048137527527,
+      "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 slam",
+      "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 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 cough and ringtone and slam",
+      "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 slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "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 slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "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 cough and ringtone and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "slam"
+      ],
+      "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 slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "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 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",
+        "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 cough and keep ringtone and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep cough and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep cough and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove cough and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove cough and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone 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/supermarket_3dist_293_rep2.json b/data/audio_mixtures_no_speech/train/supermarket_3dist_293_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..24bed59b24c4f72652202e83a77e6a7faeb020f9
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/supermarket_3dist_293_rep2.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "supermarket_3dist_293_rep2",
+  "scene_name": "Supermarket",
+  "distractor_count": 3,
+  "distractors": [
+    "gunshot",
+    "jackhammer",
+    "slam"
+  ],
+  "audio_file": "supermarket_3dist_293_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p236/p236_283.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.605850340136054,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Supermarket/asmr_Supermarket_R98aJqCQqdQ_chunk_124.mp3",
+      "origin_start": 86.85380952380953,
+      "origin_end": 96.85380952380953,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_128981.wav",
+      "origin_start": 6.645714285714286,
+      "origin_end": 9.10281179138322,
+      "mixture_start": 4.018711817910668,
+      "mixture_end": 6.475815966307506,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "jackhammer",
+      "display_name": "jackhammer",
+      "original_path": "distractors/train/jackhammer/fsd50k_146254.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.9980045351473923,
+      "mixture_start": 0.8656121990569392,
+      "mixture_end": 2.8636167342043315,
+      "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": 7.7240381891513215,
+      "mixture_end": 8.234877191418896,
+      "channel": 4
+    }
+  },
+  "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 slam",
+      "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": "remove gunshot and slam",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove jackhammer and slam",
+      "command_type": "remove_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and jackhammer 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 jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and jackhammer",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and jackhammer and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot",
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep slam and remove jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove slam and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep jackhammer and slam and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer",
+        "slam"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and keep gunshot and slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot and jackhammer and remove slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot",
+        "jackhammer"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam and remove gunshot and jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and slam and keep jackhammer",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "jackhammer"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove jackhammer and 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/train_1dist_013_rep1.json b/data/audio_mixtures_no_speech/train/train_1dist_013_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..d7a02cb786c15fe75ae1a5eb7c339eb0f11f1c74
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_013_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "train_1dist_013_rep1",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "alarm_clock"
+  ],
+  "audio_file": "train_1dist_013_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p239/p239_319.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.63,
+      "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": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_2-117116-A-37.wav",
+      "origin_start": 0.8781632653061224,
+      "origin_end": 4.5140589569161,
+      "mixture_start": 6.295360734653641,
+      "mixture_end": 9.93127786556033,
+      "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_028_rep2.json b/data/audio_mixtures_no_speech/train/train_1dist_028_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..533c5b3205875e05d9a7ebf4b73367011b8b9dac
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_028_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_028_rep2",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "boom"
+  ],
+  "audio_file": "train_1dist_028_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p262/p262_278.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.909024943310658,
+      "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": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_350604.wav",
+      "origin_start": 0.0014285714285714286,
+      "origin_end": 2.5587755102040814,
+      "mixture_start": 5.859552266185936,
+      "mixture_end": 8.416907881187637,
+      "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_040_rep2.json b/data/audio_mixtures_no_speech/train/train_1dist_040_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..83ac0b38f98fc189869076883a83a912e527dac3
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_040_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_040_rep2",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "fire_alarm"
+  ],
+  "audio_file": "train_1dist_040_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p279/p279_165.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.029637188208617,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_005.mp3",
+      "origin_start": 6.922721088435374,
+      "origin_end": 16.922721088435374,
+      "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": 7.962789115646259,
+      "origin_end": 11.0359410430839,
+      "mixture_start": 0.6351354821230615,
+      "mixture_end": 3.70830841800694,
+      "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/train_1dist_064_rep3.json b/data/audio_mixtures_no_speech/train/train_1dist_064_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..9e3f2abc04ba443547e92e8f6b0d359735a957c7
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_064_rep3.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_064_rep3",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "gunshot"
+  ],
+  "audio_file": "train_1dist_064_rep3.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/val/Train/asmr_Train_K92rkjZeTng_chunk_012.mp3",
+      "origin_start": 98.9841723356009,
+      "origin_end": 108.9841723356009,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_233323.wav",
+      "origin_start": 0.02600907029478458,
+      "origin_end": 2.081859410430839,
+      "mixture_start": 3.045821386741331,
+      "mixture_end": 5.101687882244705,
+      "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_069_rep2.json b/data/audio_mixtures_no_speech/train/train_1dist_069_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..4dac40427e5f2dfb0eb903ea7d5154667dec80b1
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_069_rep2.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "train_1dist_069_rep2",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "alarm_clock"
+  ],
+  "audio_file": "train_1dist_069_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p278/p278_203.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.2747845804988662,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_000.mp3",
+      "origin_start": 5.218367346938775,
+      "origin_end": 15.218367346938775,
+      "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_382236.wav",
+      "origin_start": 10.373219954648526,
+      "origin_end": 12.539183673469388,
+      "mixture_start": 4.850851389384566,
+      "mixture_end": 7.0168324145331935,
+      "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_074_rep4.json b/data/audio_mixtures_no_speech/train/train_1dist_074_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..ae6243ae5de4d640ec5e4891158d0c45bd9087ef
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_074_rep4.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_074_rep4",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "train_horn"
+  ],
+  "audio_file": "train_1dist_074_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p225/p225_169.wav",
+      "origin_start": 0.0,
+      "origin_end": 6.187641723356009,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_005.mp3",
+      "origin_start": 7.8369614512471655,
+      "origin_end": 17.836961451247166,
+      "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_385821.wav",
+      "origin_start": 2.014421768707483,
+      "origin_end": 4.032063492063492,
+      "mixture_start": 2.7239555728199725,
+      "mixture_end": 4.741609166774367,
+      "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_092_rep2.json b/data/audio_mixtures_no_speech/train/train_1dist_092_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..e5a10f4d9976dc2c53ddf32749112944c4e40f5a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_092_rep2.json
@@ -0,0 +1,69 @@
+{
+  "mixture_id": "train_1dist_092_rep2",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "ringtone"
+  ],
+  "audio_file": "train_1dist_092_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p261/p261_143.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.949229024943311,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_023.mp3",
+      "origin_start": 138.35678004535148,
+      "origin_end": 148.35678004535148,
+      "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": 6.397447611244565,
+      "mixture_end": 7.581665298319395,
+      "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_093_rep1.json b/data/audio_mixtures_no_speech/train/train_1dist_093_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..f7a9a5b4ad3b4c7964bada7fe235bb417918a862
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_1dist_093_rep1.json
@@ -0,0 +1,65 @@
+{
+  "mixture_id": "train_1dist_093_rep1",
+  "scene_name": "Train",
+  "distractor_count": 1,
+  "distractors": [
+    "baby_cry"
+  ],
+  "audio_file": "train_1dist_093_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p270/p270_340.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.612675736961451,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_017.mp3",
+      "origin_start": 91.22351473922903,
+      "origin_end": 101.22351473922903,
+      "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_187207_1.wav",
+      "origin_start": 12.244603174603174,
+      "origin_end": 14.652426303854876,
+      "mixture_start": 0.7579476777015027,
+      "mixture_end": 3.1657898493203924,
+      "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_2dist_130_rep2.json b/data/audio_mixtures_no_speech/train/train_2dist_130_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..9bf90b8550a02c988b740358690ee0aaebdb29b6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_130_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "train_2dist_130_rep2",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "footsteps",
+    "gunshot"
+  ],
+  "audio_file": "train_2dist_130_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p238/p238_447.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.287142857142857,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_007.mp3",
+      "origin_start": 208.15684807256235,
+      "origin_end": 218.15684807256235,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_353799.wav",
+      "origin_start": 1.1851020408163266,
+      "origin_end": 4.854195011337868,
+      "mixture_start": 2.334364252832892,
+      "mixture_end": 6.003466068387871,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_362471.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7662585034013606,
+      "mixture_start": 8.713533264219098,
+      "mixture_end": 9.479791767620458,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove footsteps",
+      "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 footsteps and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep footsteps and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "footsteps",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove gunshot 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/train_2dist_138_rep1.json b/data/audio_mixtures_no_speech/train/train_2dist_138_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..1f07368acabbfb76420d420008af06041995caad
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_138_rep1.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "train_2dist_138_rep1",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "baby_cry"
+  ],
+  "audio_file": "train_2dist_138_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p269/p269_054.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.4,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_002.mp3",
+      "origin_start": 184.92149659863946,
+      "origin_end": 194.92149659863946,
+      "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": 1.3156802954867355,
+      "mixture_end": 2.604387778479933,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/val/baby_cry/disco_noises_268217.wav",
+      "origin_start": 1.3759863945578232,
+      "origin_end": 4.331269841269841,
+      "mixture_start": 2.851912241352921,
+      "mixture_end": 5.807209738495297,
+      "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/train_2dist_148_rep4.json b/data/audio_mixtures_no_speech/train/train_2dist_148_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..ba3411315559adfe38810b04cf564b0d503a997b
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_148_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "train_2dist_148_rep4",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "fire_alarm",
+    "footsteps"
+  ],
+  "audio_file": "train_2dist_148_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_415.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.5429478458049886,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_015.mp3",
+      "origin_start": 104.89897959183673,
+      "origin_end": 114.89897959183673,
+      "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": 1.7769160997732427,
+      "origin_end": 5.5364625850340135,
+      "mixture_start": 1.0418166150482602,
+      "mixture_end": 4.801371170639403,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "footsteps",
+      "display_name": "footsteps",
+      "original_path": "distractors/train/footsteps/fsd50k_94367.wav",
+      "origin_start": 5.578253968253969,
+      "origin_end": 9.103492063492064,
+      "mixture_start": 5.054082622887517,
+      "mixture_end": 8.579339296884733,
+      "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 footsteps",
+      "command_type": "remove_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and footsteps",
+      "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 footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and footsteps",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm",
+        "footsteps"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm and keep footsteps",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "footsteps"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove footsteps",
+      "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/train_2dist_150_rep2.json b/data/audio_mixtures_no_speech/train/train_2dist_150_rep2.json
new file mode 100644
index 0000000000000000000000000000000000000000..1974891a4ffd2056b7128c78f4db2223faf49a32
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_150_rep2.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "train_2dist_150_rep2",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "cough",
+    "slam"
+  ],
+  "audio_file": "train_2dist_150_rep2.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p246/p246_233.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_jyuDtN-Awqg_chunk_003.mp3",
+      "origin_start": 250.00061224489795,
+      "origin_end": 260.000612244898,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/esc-50_2-85292-A-24.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.1261678004535147,
+      "mixture_start": 0.25991677129003954,
+      "mixture_end": 1.3860845717435542,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "slam",
+      "display_name": "slam",
+      "original_path": "distractors/train/slam/fsd50k_73075.wav",
+      "origin_start": 0.1356235827664399,
+      "origin_end": 2.245215419501134,
+      "mixture_start": 7.401379861675469,
+      "mixture_end": 9.510981891090466,
+      "channel": 3
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "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 cough 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,
+        3
+      ]
+    },
+    {
+      "user_input": "keep slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and slam",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "slam"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep slam",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "slam"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove slam",
+      "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_2dist_158_rep4.json b/data/audio_mixtures_no_speech/train/train_2dist_158_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..a30732b6b1b6b2790b9cb89169acfb3a78112c41
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_158_rep4.json
@@ -0,0 +1,140 @@
+{
+  "mixture_id": "train_2dist_158_rep4",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "fire_alarm"
+  ],
+  "audio_file": "train_2dist_158_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p233/p233_236.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.9875510204081634,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_021.mp3",
+      "origin_start": 236.33489795918368,
+      "origin_end": 246.33489795918368,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_120793.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8243083900226758,
+      "mixture_start": 4.194161345868433,
+      "mixture_end": 5.018469735891109,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 0.14648526077097507,
+      "origin_end": 2.6815646258503403,
+      "mixture_start": 2.714047955813266,
+      "mixture_end": 5.2491357443410305,
+      "channel": 3
+    }
+  },
+  "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 sneeze 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,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and fire alarm",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "fire_alarm"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep fire alarm and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "fire_alarm"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove fire alarm 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_2dist_160_rep4.json b/data/audio_mixtures_no_speech/train/train_2dist_160_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..253b0118bb0c24e90e71b6899586a4feaffcea0a
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_160_rep4.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "train_2dist_160_rep4",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "ringtone",
+    "fire_alarm"
+  ],
+  "audio_file": "train_2dist_160_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p228/p228_163.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.1616326530612247,
+      "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": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_117567.wav",
+      "origin_start": 2.7993650793650793,
+      "origin_end": 5.9445578231292515,
+      "mixture_start": 3.3244393859705696,
+      "mixture_end": 6.469637923350307,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "fire_alarm",
+      "display_name": "fire alarm",
+      "original_path": "distractors/train/fire_alarm/fsd50k_55031.wav",
+      "origin_start": 9.318480725623584,
+      "origin_end": 11.894399092970522,
+      "mixture_start": 0.6247387552519083,
+      "mixture_end": 3.2006647927785115,
+      "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/train_2dist_172_rep3.json b/data/audio_mixtures_no_speech/train/train_2dist_172_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..a424b1d71685340009ee516caad4df78b0af5e76
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_172_rep3.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "train_2dist_172_rep3",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "sneeze",
+    "alarm_clock"
+  ],
+  "audio_file": "train_2dist_172_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p270/p270_125.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.5448526077097506,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_003.mp3",
+      "origin_start": 261.4302267573696,
+      "origin_end": 271.4302267573696,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_3-150231-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6501587301587302,
+      "mixture_start": 0.7837620741507837,
+      "mixture_end": 1.4339208043095137,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/esc-50_3-139958-A-37.wav",
+      "origin_start": 0.15229024943310657,
+      "origin_end": 2.1893650793650794,
+      "mixture_start": 3.848763012632781,
+      "mixture_end": 5.885848585646855,
+      "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 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"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "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/train_2dist_186_rep3.json b/data/audio_mixtures_no_speech/train/train_2dist_186_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..92f719971af6527cdef868b5b38fe4f275dd8cd8
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_186_rep3.json
@@ -0,0 +1,148 @@
+{
+  "mixture_id": "train_2dist_186_rep3",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "ringtone"
+  ],
+  "audio_file": "train_2dist_186_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p287/p287_161.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.4150113378684805,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_000.mp3",
+      "origin_start": 0.2453514739229025,
+      "origin_end": 10.245351473922902,
+      "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_223505.wav",
+      "origin_start": 5.1636961451247165,
+      "origin_end": 7.806213151927437,
+      "mixture_start": 3.7883904593658215,
+      "mixture_end": 6.430927844657077,
+      "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": 0.6265786954808951,
+      "mixture_end": 1.4741070401520968,
+      "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/train_2dist_188_rep1.json b/data/audio_mixtures_no_speech/train/train_2dist_188_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..25090df3d58b60bfff594b765881d1efd0953612
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_2dist_188_rep1.json
@@ -0,0 +1,130 @@
+{
+  "mixture_id": "train_2dist_188_rep1",
+  "scene_name": "Train",
+  "distractor_count": 2,
+  "distractors": [
+    "applause",
+    "computer_typing"
+  ],
+  "audio_file": "train_2dist_188_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p286/p286_445.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.7762131519274376,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_jyuDtN-Awqg_chunk_002.mp3",
+      "origin_start": 25.382789115646258,
+      "origin_end": 35.38278911564626,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/train/applause/fsd50k_274640.wav",
+      "origin_start": 10.631133786848073,
+      "origin_end": 12.656054421768708,
+      "mixture_start": 0.9363497499457821,
+      "mixture_end": 2.961277920668651,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/fsd50k_144105.wav",
+      "origin_start": 3.1143537414965987,
+      "origin_end": 6.715102040816326,
+      "mixture_start": 3.171940832468293,
+      "mixture_end": 6.7726896059917605,
+      "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 computer typing",
+      "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": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove 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/train_3dist_205_rep1.json b/data/audio_mixtures_no_speech/train/train_3dist_205_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..007be131cf974934926a95558f2eb8b007bbfe18
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_205_rep1.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "train_3dist_205_rep1",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "ringtone",
+    "computer_typing"
+  ],
+  "audio_file": "train_3dist_205_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p225/p225_235.wav",
+      "origin_start": 0.0,
+      "origin_end": 8.536190476190477,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_002.mp3",
+      "origin_start": 116.48902494331065,
+      "origin_end": 126.48902494331065,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/val/cough/esc-50_4-177835-A-24.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8243083900226758,
+      "mixture_start": 2.6103635229666864,
+      "mixture_end": 3.434671912989362,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "ringtone",
+      "display_name": "ringtone",
+      "original_path": "distractors/train/ringtone/fsd50k_352657.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.18421768707483,
+      "mixture_start": 6.492986652729132,
+      "mixture_end": 7.677204339803962,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "computer_typing",
+      "display_name": "computer typing",
+      "original_path": "distractors/train/computer_typing/fsd50k_267302.wav",
+      "origin_start": 1.4787528344671201,
+      "origin_end": 5.438888888888889,
+      "mixture_start": 2.4861429805855293,
+      "mixture_end": 6.446284051681405,
+      "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 computer typing",
+      "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 computer typing",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and computer typing",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and ringtone and computer typing",
+      "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 computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "computer_typing"
+      ],
+      "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 computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "computer_typing"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone and computer typing",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "ringtone",
+        "computer_typing"
+      ],
+      "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 computer typing and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "computer_typing"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove ringtone 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",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and computer typing and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "computer_typing"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep cough and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "computer_typing"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and ringtone and remove computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and ringtone and keep computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "computer_typing"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove cough and computer typing",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone 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/train_3dist_210_rep3.json b/data/audio_mixtures_no_speech/train/train_3dist_210_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..5a5d562ade84129b236fcd6f2f1dad0010f129a6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_210_rep3.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "train_3dist_210_rep3",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "sneeze",
+    "siren"
+  ],
+  "audio_file": "train_3dist_210_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p236/p236_281.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.0533333333333332,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_vXCB1zGGFiY_chunk_005.mp3",
+      "origin_start": 42.76036281179138,
+      "origin_end": 52.76036281179138,
+      "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": 0.07337868480725623,
+      "origin_end": 2.0926757369614513,
+      "mixture_start": 6.775023208550699,
+      "mixture_end": 8.794334699726777,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_2-119102-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5340362811791384,
+      "mixture_start": 7.034103973132775,
+      "mixture_end": 7.568162930048875,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "siren",
+      "display_name": "siren",
+      "original_path": "distractors/train/siren/esc-50_3-62878-A-42.wav",
+      "origin_start": 0.8016099773242631,
+      "origin_end": 3.7196825396825397,
+      "mixture_start": 0.7491877951952751,
+      "mixture_end": 3.6672727160063054,
+      "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 sneeze",
+      "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 sneeze",
+      "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 sneeze and siren",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and sneeze 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 sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze",
+        "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 sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze",
+        "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 sneeze and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and sneeze and siren",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "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": "keep cellphone buzz vibrating alert and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "siren"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep 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",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep sneeze and siren and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "siren"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and siren and remove sneeze",
+      "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 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 siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "siren"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove cellphone buzz vibrating alert and siren",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze 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/train_3dist_227_rep3.json b/data/audio_mixtures_no_speech/train/train_3dist_227_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..b0586127ac1247180000f2b413f19c621b4eb50e
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_227_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "train_3dist_227_rep3",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "alarm_clock",
+    "gunshot"
+  ],
+  "audio_file": "train_3dist_227_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p259/p259_463.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.3329931972789115,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_002.mp3",
+      "origin_start": 224.37598639455783,
+      "origin_end": 234.37598639455783,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "applause",
+      "display_name": "applause",
+      "original_path": "distractors/val/applause/fsd50k_381363.wav",
+      "origin_start": 2.9382766439909296,
+      "origin_end": 6.597369614512472,
+      "mixture_start": 2.3265881710635523,
+      "mixture_end": 5.985681872483257,
+      "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": 0.09589569160997732,
+      "origin_end": 3.378979591836735,
+      "mixture_start": 6.035984898020341,
+      "mixture_end": 9.319073532725891,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "gunshot",
+      "display_name": "gunshot",
+      "original_path": "distractors/train/gunshot/fsd50k_165540.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.8475283446712019,
+      "mixture_start": 5.8300107642222185,
+      "mixture_end": 6.67753910889342,
+      "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 alarm clock",
+      "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 alarm clock",
+      "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 alarm clock and gunshot",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and alarm clock 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 alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "alarm_clock",
+        "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 alarm clock and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and alarm clock and gunshot",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove alarm clock and keep gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and remove gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and keep alarm clock and gunshot",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock",
+        "gunshot"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and gunshot and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "gunshot"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove gunshot and keep applause and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep gunshot and remove applause and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "gunshot"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and gunshot and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove alarm clock 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/train_3dist_254_rep1.json b/data/audio_mixtures_no_speech/train/train_3dist_254_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..e3e253ddc20a13028ac2aed9880951634fb24a0d
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_254_rep1.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "train_3dist_254_rep1",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "sneeze",
+    "alarm_clock"
+  ],
+  "audio_file": "train_3dist_254_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p230/p230_355.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.0722675736961453,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_013.mp3",
+      "origin_start": 114.38637188208617,
+      "origin_end": 124.38637188208617,
+      "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": 0.007800453514739229,
+      "origin_end": 2.0810204081632655,
+      "mixture_start": 0.8422985940783634,
+      "mixture_end": 2.9155292825068035,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/fsd50k_368804.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.6617687074829932,
+      "mixture_start": 0.6347831978907997,
+      "mixture_end": 1.2965519053737928,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "alarm_clock",
+      "display_name": "alarm clock",
+      "original_path": "distractors/train/alarm_clock/fsd50k_382236.wav",
+      "origin_start": 1.4802040816326532,
+      "origin_end": 3.7468707482993198,
+      "mixture_start": 5.402593858922101,
+      "mixture_end": 7.669265228118815,
+      "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 sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove alarm clock",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and sneeze",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and 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": "remove cough and sneeze and alarm clock",
+      "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 alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and sneeze and alarm clock",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "sneeze",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep alarm clock and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep sneeze and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep cough and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "alarm_clock"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and sneeze and remove alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "sneeze"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and sneeze and keep alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "alarm_clock"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and remove cough and alarm clock",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove sneeze and alarm clock",
+      "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_263_rep4.json b/data/audio_mixtures_no_speech/train/train_3dist_263_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..d158ac5484f8c0e90d556b8396bbf74b6ab4064f
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_263_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "train_3dist_263_rep4",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "applause",
+    "ringtone",
+    "glass_breaking"
+  ],
+  "audio_file": "train_3dist_263_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p226/p226_358.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.012562358276644,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_jyuDtN-Awqg_chunk_002.mp3",
+      "origin_start": 111.66766439909297,
+      "origin_end": 121.66766439909297,
+      "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": 0.36462585034013606,
+      "origin_end": 2.762380952380952,
+      "mixture_start": 3.9767698785247596,
+      "mixture_end": 6.374538232229534,
+      "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": 7.835314665929842,
+      "mixture_end": 9.12402214892304,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_213164.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.626938775510204,
+      "mixture_start": 6.233490863241521,
+      "mixture_end": 6.860429638751725,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove applause and ringtone",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove ringtone and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove applause and ringtone and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "keep applause",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "applause",
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove applause and keep glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove ringtone",
+      "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",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep ringtone and glass breaking and remove applause",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove ringtone and keep applause and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep applause and ringtone and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "applause",
+        "ringtone"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove applause and ringtone",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep ringtone and remove applause and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "ringtone"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep applause and remove ringtone 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/train_3dist_264_rep1.json b/data/audio_mixtures_no_speech/train/train_3dist_264_rep1.json
new file mode 100644
index 0000000000000000000000000000000000000000..69b8bb1d386d3f8e47ab19ff0a0261c151682468
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_264_rep1.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "train_3dist_264_rep1",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "cough",
+    "glass_breaking"
+  ],
+  "audio_file": "train_3dist_264_rep1.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/train/p276/p276_298.wav",
+      "origin_start": 0.0,
+      "origin_end": 4.396281179138322,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_007.mp3",
+      "origin_start": 259.84802721088437,
+      "origin_end": 269.84802721088437,
+      "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": 1.804625850340136,
+      "origin_end": 4.083605442176871,
+      "mixture_start": 2.6201449785814246,
+      "mixture_end": 4.899138980658862,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/esc-50_2-98676-A-24.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.207437641723356,
+      "mixture_start": 5.680286188977197,
+      "mixture_end": 6.887723830700553,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "glass_breaking",
+      "display_name": "glass breaking",
+      "original_path": "distractors/train/glass_breaking/fsd50k_390708.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.0565079365079366,
+      "mixture_start": 7.419289315385862,
+      "mixture_end": 8.475797251893798,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "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 cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and glass breaking",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and cough 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,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cough",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "glass_breaking"
+      ],
+      "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"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and cough and glass breaking",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep glass breaking and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove glass breaking and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "cough"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and glass breaking and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep cellphone buzz vibrating alert and glass breaking",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "glass_breaking"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove glass breaking 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 glass breaking and remove cellphone buzz vibrating alert and cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "glass_breaking"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and glass breaking and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and 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/train_3dist_274_rep4.json b/data/audio_mixtures_no_speech/train/train_3dist_274_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..838c2a6809a6633ba4fa6583196eb9b199f074f2
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_274_rep4.json
@@ -0,0 +1,367 @@
+{
+  "mixture_id": "train_3dist_274_rep4",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "cellphone_buzz_vibrating_alert",
+    "sneeze",
+    "train_horn"
+  ],
+  "audio_file": "train_3dist_274_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p227/p227_329.wav",
+      "origin_start": 0.0,
+      "origin_end": 2.562358276643991,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_000.mp3",
+      "origin_start": 230.8994557823129,
+      "origin_end": 240.8994557823129,
+      "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": 4.0180725623582765,
+      "origin_end": 7.334104308390023,
+      "mixture_start": 2.972439704285515,
+      "mixture_end": 6.288479246335402,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "sneeze",
+      "display_name": "sneeze",
+      "original_path": "distractors/train/sneeze/esc-50_2-119102-A-21.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.5340362811791384,
+      "mixture_start": 2.3151490064084776,
+      "mixture_end": 2.8492079633245773,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "train_horn",
+      "display_name": "train horn",
+      "original_path": "distractors/train/train_horn/fsd50k_332415.wav",
+      "origin_start": 23.269455782312924,
+      "origin_end": 25.95047619047619,
+      "mixture_start": 6.894945934658165,
+      "mixture_end": 9.575985731899554,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert",
+      "command_type": "remove_only",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn",
+      "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": [
+        "train_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and train horn",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove sneeze and train horn",
+      "command_type": "remove_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and sneeze and train 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",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep sneeze and train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and sneeze and train horn",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "sneeze",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "train_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep train horn and remove cellphone buzz vibrating alert",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn 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 train horn",
+      "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 train horn",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze",
+        "train_horn"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and train horn and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cellphone_buzz_vibrating_alert",
+        "train_horn"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "remove train horn 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": "keep train horn and remove cellphone buzz vibrating alert and sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "train_horn"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cellphone buzz vibrating alert and train horn and keep sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cellphone buzz vibrating alert and remove sneeze and train horn",
+      "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_279_rep3.json b/data/audio_mixtures_no_speech/train/train_3dist_279_rep3.json
new file mode 100644
index 0000000000000000000000000000000000000000..20fa86fb932b5e5d4c0b75b69067454710f433e6
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_279_rep3.json
@@ -0,0 +1,345 @@
+{
+  "mixture_id": "train_3dist_279_rep3",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "baby_cry",
+    "boom"
+  ],
+  "audio_file": "train_3dist_279_rep3.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p231/p231_048.wav",
+      "origin_start": 0.0,
+      "origin_end": 1.7971201814058957,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_019.mp3",
+      "origin_start": 9.252743764172335,
+      "origin_end": 19.252743764172337,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_148212.wav",
+      "origin_start": 0.27138321995464854,
+      "origin_end": 3.048458049886621,
+      "mixture_start": 1.874280165424349,
+      "mixture_end": 4.651360539858112,
+      "channel": 2
+    },
+    "distractor_2": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_198411_12.wav",
+      "origin_start": 16.184625850340137,
+      "origin_end": 19.75097505668934,
+      "mixture_start": 5.418984927420693,
+      "mixture_end": 8.985334631490693,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "boom",
+      "display_name": "boom",
+      "original_path": "distractors/train/boom/fsd50k_186945.wav",
+      "origin_start": 0.0,
+      "origin_end": 0.7430385487528345,
+      "mixture_start": 2.9767035321966455,
+      "mixture_end": 3.71974208094948,
+      "channel": 4
+    }
+  },
+  "command_variants": [
+    {
+      "user_input": null,
+      "command_type": "no_input",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry",
+      "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 cough and baby cry",
+      "command_type": "remove_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove baby cry and boom",
+      "command_type": "remove_only",
+      "target_sources": [],
+      "target_channels": []
+    },
+    {
+      "user_input": "remove cough and baby cry 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,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "baby_cry",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry and boom",
+      "command_type": "keep_only",
+      "target_sources": [
+        "cough",
+        "baby_cry",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove cough and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep boom and remove baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove boom and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and keep baby cry and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry",
+        "boom"
+      ],
+      "target_channels": [
+        3,
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep cough and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "boom"
+      ],
+      "target_channels": [
+        2,
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and baby cry and remove boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough",
+        "baby_cry"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "user_input": "remove cough and baby cry and keep boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "boom"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cough and boom",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep cough and remove baby cry and 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/train_3dist_291_rep4.json b/data/audio_mixtures_no_speech/train/train_3dist_291_rep4.json
new file mode 100644
index 0000000000000000000000000000000000000000..de7e27612c01e01fc72cab77c925f39ab3bd1cdb
--- /dev/null
+++ b/data/audio_mixtures_no_speech/train/train_3dist_291_rep4.json
@@ -0,0 +1,319 @@
+{
+  "mixture_id": "train_3dist_291_rep4",
+  "scene_name": "Train",
+  "distractor_count": 3,
+  "distractors": [
+    "cough",
+    "sneeze",
+    "baby_cry"
+  ],
+  "audio_file": "train_3dist_291_rep4.wav",
+  "split": "train",
+  "audio_metadata": {
+    "duration": 10.0,
+    "sample_rate": 44100,
+    "channels": 5,
+    "speech": {
+      "original_path": "speech/val/p234/p234_027.wav",
+      "origin_start": 0.0,
+      "origin_end": 3.674263038548753,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 0
+    },
+    "background": {
+      "original_path": "background/train/Train/asmr_Train_K92rkjZeTng_chunk_006.mp3",
+      "origin_start": 73.71784580498866,
+      "origin_end": 83.71784580498866,
+      "mixture_start": 0.0,
+      "mixture_end": 10.0,
+      "channel": 1
+    },
+    "distractor_1": {
+      "name": "cough",
+      "display_name": "cough",
+      "original_path": "distractors/train/cough/fsd50k_53663.wav",
+      "origin_start": 1.7702721088435374,
+      "origin_end": 4.455759637188208,
+      "mixture_start": 5.0112748098475155,
+      "mixture_end": 7.696773445004216,
+      "channel": 2
+    },
+    "distractor_2": {
+      "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": 6.661045954616006,
+      "mixture_end": 7.334424639423263,
+      "channel": 3
+    },
+    "distractor_3": {
+      "name": "baby_cry",
+      "display_name": "baby cry",
+      "original_path": "distractors/train/baby_cry/disco_noises_463879.wav",
+      "origin_start": 5.588231292517007,
+      "origin_end": 7.8238548752834465,
+      "mixture_start": 6.9150640454535655,
+      "mixture_end": 9.150707192824726,
+      "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 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 cough and sneeze",
+      "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 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"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "keep sneeze",
+      "command_type": "keep_only",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "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"
+      ],
+      "target_channels": [
+        2,
+        3
+      ]
+    },
+    {
+      "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": "keep sneeze and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "keep baby cry and remove cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "keep cough and remove sneeze",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    },
+    {
+      "user_input": "remove sneeze and keep baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "baby_cry"
+      ],
+      "target_channels": [
+        4
+      ]
+    },
+    {
+      "user_input": "remove baby cry and keep cough",
+      "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": "remove cough and keep sneeze and baby cry",
+      "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": "keep sneeze and remove cough and baby cry",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "sneeze"
+      ],
+      "target_channels": [
+        3
+      ]
+    },
+    {
+      "user_input": "remove sneeze and baby cry and keep cough",
+      "command_type": "mixed_commands",
+      "target_sources": [
+        "cough"
+      ],
+      "target_channels": [
+        2
+      ]
+    }
+  ]
+}
\ No newline at end of file