diff --git a/conversations/conv_000000.json b/conversations/conv_000000.json
deleted file mode 100644
index 50df7ceeb145d91f00cbc8ec1778c8b99da677c0..0000000000000000000000000000000000000000
--- a/conversations/conv_000000.json
+++ /dev/null
@@ -1,173 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.622705738112725,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.3321798229296196,
-      "duration": 3.3321798229296196,
-      "start_frame": 0,
-      "duration_frames": 53314,
-      "overlap": false,
-      "utterance_id": "5895-34615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 3.959740696805373,
-      "end_time": 9.37830263510558,
-      "duration": 5.418561938300207,
-      "start_frame": 63355,
-      "duration_frames": 86696,
-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 10.28250874902819,
-      "end_time": 14.411191547992917,
-      "duration": 4.128682798964728,
-      "start_frame": 164520,
-      "duration_frames": 66058,
-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 86696
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 14.70112362512166,
-      "end_time": 18.857692331260203,
-      "duration": 4.1565687061385415,
-      "start_frame": 235217,
-      "duration_frames": 66505,
-      "overlap": false,
-      "utterance_id": "5895-34629",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 19.186473905589708,
-      "end_time": 23.07286364991095,
-      "duration": 3.8863897443212414,
-      "start_frame": 306983,
-      "duration_frames": 62182,
-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 152754
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 22.640766501983453,
-      "end_time": 25.91427613585,
-      "duration": 3.2735096338665457,
-      "start_frame": 362252,
-      "duration_frames": 52376,
-      "overlap": true,
-      "utterance_id": "5895-34629",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 66505
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 27.523663772990933,
-      "end_time": 31.622705738112725,
-      "duration": 4.099041965121793,
-      "start_frame": 440378,
-      "duration_frames": 65584,
-      "overlap": false,
-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/417913.wav",
-      "duration": 22.56219954648526,
-      "start_time": 0.698818647716339
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/352270.wav",
-      "duration": 4.659838702175123,
-      "start_time": 17.04107132409754
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/cough/0030.wav",
-      "duration": 1.1026095031963288,
-      "start_time": 3.450439380471165,
-      "speaker_id": "5895"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/laugh/0055.wav",
-      "duration": 1.2083223877429239,
-      "start_time": 2.459904680445718,
-      "speaker_id": "3853"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/laugh/0040.wav",
-      "duration": 1.16,
-      "start_time": 15.033415588564411,
-      "speaker_id": "5895"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/laugh/0050.wav",
-      "duration": 1.4546156168956705,
-      "start_time": 17.579287081344628,
-      "speaker_id": "3853"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/laugh/0068.wav",
-      "duration": 1.12,
-      "start_time": 21.452127052335964,
-      "speaker_id": "5895"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/cough/0078.wav",
-      "duration": 0.92,
-      "start_time": 24.11018976920991,
-      "speaker_id": "5895"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1673/laugh/0036.wav",
-      "duration": 1.3,
-      "start_time": 30.7,
-      "speaker_id": "1673"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000001.json b/conversations/conv_000001.json
deleted file mode 100644
index 8dbb6ccb511055a618e5eb2d8841b4036535989b..0000000000000000000000000000000000000000
--- a/conversations/conv_000001.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.504276435150878,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 6.086124877288816,
-      "duration": 6.086124877288816,
-      "start_frame": 0,
-      "duration_frames": 97377,
-      "overlap": false,
-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 6.483819022505239,
-      "end_time": 10.178361590663627,
-      "duration": 3.694542568158389,
-      "start_frame": 103741,
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-      "overlap": false,
-      "utterance_id": "5536-43358",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 10.475704302811017,
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-      "duration": 3.6395191618926797,
-      "start_frame": 167611,
-      "duration_frames": 58232,
-      "overlap": false,
-      "utterance_id": "8842-304647",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-304647.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 14.288281802654566,
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-      "duration": 4.00589252993268,
-      "start_frame": 228612,
-      "duration_frames": 64094,
-      "overlap": false,
-      "utterance_id": "2412-153947",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 18.7355852098906,
-      "end_time": 22.59809452911324,
-      "duration": 3.862509319222637,
-      "start_frame": 299769,
-      "duration_frames": 61800,
-      "overlap": false,
-      "utterance_id": "5536-43359",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 23.281060788600897,
-      "end_time": 27.618411753761876,
-      "duration": 4.337350965160981,
-      "start_frame": 372496,
-      "duration_frames": 69397,
-      "overlap": false,
-      "utterance_id": "8842-302196",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302196.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 27.589022154840286,
-      "end_time": 31.504276435150878,
-      "duration": 3.9152542803105916,
-      "start_frame": 441424,
-      "duration_frames": 62644,
-      "overlap": true,
-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 97377
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/71936.wav",
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-      "start_time": 1.4738551030019933
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/213889_1.wav",
-      "duration": 1.0652834467120182,
-      "start_time": 26.490149246943833
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/laugh/0021.wav",
-      "duration": 1.3231006840498791,
-      "start_time": 27.75293899665775,
-      "speaker_id": "8842"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/laugh/0005.wav",
-      "duration": 0.8558736312452001,
-      "start_time": 26.67950171082869,
-      "speaker_id": "2412"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000002.json b/conversations/conv_000002.json
deleted file mode 100644
index 0741df141aeb4120871fdc2fe709dacf7af7a2a1..0000000000000000000000000000000000000000
--- a/conversations/conv_000002.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 4.07139595946756,
-      "duration": 4.07139595946756,
-      "start_frame": 0,
-      "duration_frames": 65142,
-      "overlap": false,
-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 4.187438106621998,
-      "end_time": 10.844830434297222,
-      "duration": 6.657392327675224,
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-      "duration_frames": 106518,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
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-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 17.198191026971045,
-      "end_time": 21.6385122424955,
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-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 106518
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 22.33995106815343,
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-      "overlap": false,
-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.71770112278254,
-      "end_time": 32.0,
-      "duration": 4.28229887721746,
-      "start_frame": 443483,
-      "duration_frames": 68516,
-      "overlap": false,
-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 76618
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/417995.wav",
-      "duration": 2.3126106698989277,
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-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/91520.wav",
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3576/laugh/0000.wav",
-      "duration": 0.88,
-      "start_time": 3.170258558137879,
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-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/laugh/0049.wav",
-      "duration": 1.2,
-      "start_time": 12.0571752400267,
-      "speaker_id": "7976"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/cough/0036.wav",
-      "duration": 0.34928102012145096,
-      "start_time": 11.12468894729309,
-      "speaker_id": "7976"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3536/laugh/0029.wav",
-      "duration": 1.1424717124101615,
-      "start_time": 21.180021277090734,
-      "speaker_id": "3536"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000003.json b/conversations/conv_000003.json
deleted file mode 100644
index c27d0a496d53f767cae7f9bce2e90ca155006200..0000000000000000000000000000000000000000
--- a/conversations/conv_000003.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.406592623113395,
-      "duration": 5.406592623113395,
-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.331011532144499,
-      "end_time": 9.555651780227691,
-      "duration": 3.224640248083193,
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-      "overlap": true,
-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
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-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 51594
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-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 15.45817100568266,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
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-      "end_time": 25.813426014142358,
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-      "utterance_id": "174-50561",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-50561.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 27.47001866085815,
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-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 183283
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/81573.wav",
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-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/189735.wav",
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-  "paralinguistic_events": [
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-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3081/cough/0027.wav",
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-      "speaker_id": "3081"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000004.json b/conversations/conv_000004.json
deleted file mode 100644
index 59c59dbdc4ddfa86e286eabe14aabde353c256d9..0000000000000000000000000000000000000000
--- a/conversations/conv_000004.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.588062834598894,
-      "duration": 5.588062834598894,
-      "start_frame": 0,
-      "duration_frames": 89409,
-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 5.3562999948405245,
-      "end_time": 9.07641008178356,
-      "duration": 3.720110086943035,
-      "start_frame": 85700,
-      "duration_frames": 59521,
-      "overlap": true,
-      "utterance_id": "8297-275154",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275154.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 10.252650603422417,
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-      "duration_frames": 89709,
-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 89409
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 16.715118663809566,
-      "end_time": 22.45921501364838,
-      "duration": 5.744096349838813,
-      "start_frame": 267441,
-      "duration_frames": 91905,
-      "overlap": false,
-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.757038104131635,
-      "end_time": 27.87555162549772,
-      "duration": 5.118513521366085,
-      "start_frame": 364112,
-      "duration_frames": 81896,
-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 179118
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 28.49150475011257,
-      "end_time": 32.0,
-      "duration": 3.5084952498874316,
-      "start_frame": 455864,
-      "duration_frames": 56135,
-      "overlap": false,
-      "utterance_id": "8297-275156",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275156.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/91517.wav",
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-      "start_time": 21.127327914122816
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8297/laugh/0017.wav",
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-      "start_time": 4.089600510767616,
-      "speaker_id": "8297"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8297/cough/0045.wav",
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-      "start_time": 4.537190349059831,
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-      "start_time": 22.513406542151404,
-      "speaker_id": "6313"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3081/laugh/0057.wav",
-      "duration": 1.24,
-      "start_time": 28.000543342819263,
-      "speaker_id": "3081"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8297/cough/0053.wav",
-      "duration": 0.96,
-      "start_time": 27.526231355213117,
-      "speaker_id": "8297"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000005.json b/conversations/conv_000005.json
deleted file mode 100644
index 3898f16bfe75f02fa191ba377dfaff8e9e06661d..0000000000000000000000000000000000000000
--- a/conversations/conv_000005.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "start_frame": 0,
-      "duration_frames": 87091,
-      "overlap": false,
-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 6.079585166058356,
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-      "utterance_id": "2428-83699",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 11.210214896629427,
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-      "overlap": false,
-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 17.220238176261624,
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-      "duration": 4.324901792781135,
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-      "duration_frames": 69198,
-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
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-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 22.294279941981756,
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-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 86225
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 29.108588385703968,
-      "end_time": 32.0,
-      "duration": 2.8914116142960324,
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-      "overlap": false,
-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/35872.wav",
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-  "foreground_events": [
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-      "event_class": "Running_water",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2428/laugh/0048.wav",
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-      "speaker_id": "2428"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2428/cough/0000.wav",
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2428/laugh/0054.wav",
-      "duration": 1.22,
-      "start_time": 9.962527720760804,
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2428/laugh/0043.wav",
-      "duration": 0.9153164722208056,
-      "start_time": 21.353608367456747,
-      "speaker_id": "2428"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000006.json b/conversations/conv_000006.json
deleted file mode 100644
index 8d4a556ba07b54d98594ab9bfc208fc2481d9fa3..0000000000000000000000000000000000000000
--- a/conversations/conv_000006.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
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-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 6.729867779642683,
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-      "start_frame": 0,
-      "duration_frames": 107677,
-      "overlap": false,
-      "utterance_id": "2428-83699",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 7.219167502976634,
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-      "overlap": true,
-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
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-      "overlap": true,
-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 61271
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 25.989308071546045,
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-      "overlap": false,
-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 129540
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 30.361613361487034,
-      "end_time": 32.0,
-      "duration": 1.6383866385129657,
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-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 58999
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/164574.wav",
-      "duration": 0.09782312925170068,
-      "start_time": 19.480108594796796
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2428/laugh/0068.wav",
-      "duration": 1.16,
-      "start_time": 2.6798867508151467,
-      "speaker_id": "2428"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/84/laugh/0010.wav",
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-      "start_time": 11.345640541607045,
-      "speaker_id": "84"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000007.json b/conversations/conv_000007.json
deleted file mode 100644
index 5d5638da8f7ab623b651184a343fb0079cebf5c8..0000000000000000000000000000000000000000
--- a/conversations/conv_000007.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 2,
-      "start_time": 0.0,
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-      "duration": 5.556718810056963,
-      "start_frame": 0,
-      "duration_frames": 88907,
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "duration_frames": 82078,
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
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-      "speaker_id": "3170"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000008.json b/conversations/conv_000008.json
deleted file mode 100644
index 7f259efaf719b63f7bdbed2c7e8b883f1318b7d0..0000000000000000000000000000000000000000
--- a/conversations/conv_000008.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 31.509995754152836,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
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-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
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-      "speaker_id": 1,
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\ No newline at end of file
diff --git a/conversations/conv_000009.json b/conversations/conv_000009.json
deleted file mode 100644
index 05b4750cd781d6baf8be590049c11ae294d1f419..0000000000000000000000000000000000000000
--- a/conversations/conv_000009.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275154.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275156.flac |",
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-      "position_frames": 0
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-      "real_speaker_id": "6345",
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-      "speaker_id": 2,
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-      "position_frames": 102793
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-  "foreground_events": [
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000010.json b/conversations/conv_000010.json
deleted file mode 100644
index cb4fff1b533b7f4c1fb38688308e80496cf81312..0000000000000000000000000000000000000000
--- a/conversations/conv_000010.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.215181062833373,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
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-      "real_speaker_id": "8842",
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-      "real_speaker_id": "8842",
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-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Alarm_bell_ringing",
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-      "speaker_id": "8842"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000011.json b/conversations/conv_000011.json
deleted file mode 100644
index 903772185c03905361434f69a8eff217991efaa3..0000000000000000000000000000000000000000
--- a/conversations/conv_000011.json
+++ /dev/null
@@ -1,166 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "start_time": 0.0,
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-      "utterance_id": "5694-64038",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
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-    {
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-      "start_time": 5.4219088245235225,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147965.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
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-  "background_events": [
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-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/81574.wav",
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-      "event_class": "Dog",
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000012.json b/conversations/conv_000012.json
deleted file mode 100644
index 217a3285f36a25e46dfba762113251dc751f5ead..0000000000000000000000000000000000000000
--- a/conversations/conv_000012.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.946257649070773,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
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-      "speaker_id": 2,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170138.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 111167
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-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Blender",
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000013.json b/conversations/conv_000013.json
deleted file mode 100644
index 4c3d0357ebbcd8f7e73025ac9b1822682fa522e1..0000000000000000000000000000000000000000
--- a/conversations/conv_000013.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "position_frames": 0
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-      "real_speaker_id": "8297",
-      "position_frames": 0
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-  "background_events": [
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000014.json b/conversations/conv_000014.json
deleted file mode 100644
index 729b4df5a7086328fff008e160a772d03e943ce2..0000000000000000000000000000000000000000
--- a/conversations/conv_000014.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-  "foreground_events": [
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-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6295/cough/0072.wav",
-      "duration": 0.92,
-      "start_time": 10.740058613635853,
-      "speaker_id": "6295"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000015.json b/conversations/conv_000015.json
deleted file mode 100644
index f082399af9562f2bc33f2def2498947451bc4215..0000000000000000000000000000000000000000
--- a/conversations/conv_000015.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.062533555697912,
-      "duration": 5.062533555697912,
-      "start_frame": 0,
-      "duration_frames": 81000,
-      "overlap": false,
-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.469573913097723,
-      "end_time": 10.473747469480092,
-      "duration": 5.004173556382368,
-      "start_frame": 87513,
-      "duration_frames": 80066,
-      "overlap": false,
-      "utterance_id": "8297-275154",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275154.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 11.62191932752172,
-      "end_time": 16.87837578487405,
-      "duration": 5.2564564573523285,
-      "start_frame": 185950,
-      "duration_frames": 84103,
-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 17.78735216583157,
-      "end_time": 24.765499089422363,
-      "duration": 6.978146923590791,
-      "start_frame": 284597,
-      "duration_frames": 111650,
-      "overlap": false,
-      "utterance_id": "8297-275155",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275155.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 25.300242754687083,
-      "end_time": 30.494203217436592,
-      "duration": 5.19396046274951,
-      "start_frame": 404803,
-      "duration_frames": 83103,
-      "overlap": false,
-      "utterance_id": "7976-105575",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 31.146222202820205,
-      "end_time": 32.0,
-      "duration": 0.8537777971797951,
-      "start_frame": 498339,
-      "duration_frames": 13660,
-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 84103
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/59327.wav",
-      "duration": 13.495468856547543,
-      "start_time": 15.541239635077783
-    }
-  ],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/371918.wav",
-      "duration": 1.9474822358979282,
-      "start_time": 9.077678597223764
-    },
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/329896_17.wav",
-      "duration": 0.6050113378684807,
-      "start_time": 13.30325766901432
-    }
-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/cough/0044.wav",
-      "duration": 0.47964476154834923,
-      "start_time": 5.0931303158636245,
-      "speaker_id": "7976"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8297/laugh/0038.wav",
-      "duration": 1.24,
-      "start_time": 7.484754723248926,
-      "speaker_id": "8297"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8297/cough/0071.wav",
-      "duration": 1.0703658005319192,
-      "start_time": 10.583086952022907,
-      "speaker_id": "8297"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/laugh/0024.wav",
-      "duration": 1.44,
-      "start_time": 10.03288926986397,
-      "speaker_id": "3170"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8297/laugh/0059.wav",
-      "duration": 1.02,
-      "start_time": 24.893958973900048,
-      "speaker_id": "8297"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/laugh/0039.wav",
-      "duration": 1.1,
-      "start_time": 30.9,
-      "speaker_id": "3170"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000016.json b/conversations/conv_000016.json
deleted file mode 100644
index aa5f335ed550c86eac6739f0eb9b684bf9b94d82..0000000000000000000000000000000000000000
--- a/conversations/conv_000016.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 4.127478629077034,
-      "duration": 4.127478629077034,
-      "start_frame": 0,
-      "duration_frames": 66039,
-      "overlap": false,
-      "utterance_id": "6241-61946",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 4.367767611050631,
-      "end_time": 7.531857210907246,
-      "duration": 3.164089599856615,
-      "start_frame": 69884,
-      "duration_frames": 50625,
-      "overlap": false,
-      "utterance_id": "6241-66616",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 8.125371575623547,
-      "end_time": 13.686456430394905,
-      "duration": 5.561084854771358,
-      "start_frame": 130005,
-      "duration_frames": 88977,
-      "overlap": false,
-      "utterance_id": "5694-64029",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64029.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 14.464455590705654,
-      "end_time": 19.609106168895888,
-      "duration": 5.144650578190235,
-      "start_frame": 231431,
-      "duration_frames": 82314,
-      "overlap": false,
-      "utterance_id": "6241-66616",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 50625
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 19.27645450707371,
-      "end_time": 24.530495743127826,
-      "duration": 5.254041236054117,
-      "start_frame": 308423,
-      "duration_frames": 84064,
-      "overlap": true,
-      "utterance_id": "5694-64038",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 25.296580515098466,
-      "end_time": 32.0,
-      "duration": 6.703419484901534,
-      "start_frame": 404745,
-      "duration_frames": 107254,
-      "overlap": false,
-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/371913_1.wav",
-      "duration": 14.170210287146716,
-      "start_time": 2.0747884039402535
-    }
-  ],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/265541.wav",
-      "duration": 0.9175736961451247,
-      "start_time": 25.050116855560713
-    },
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/589_1.wav",
-      "duration": 4.1601217452282455,
-      "start_time": 2.252782988610276
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6241/cough/0001.wav",
-      "duration": 0.5683373213955735,
-      "start_time": 2.0395354207205956,
-      "speaker_id": "6241"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6241/cough/0059.wav",
-      "duration": 1.26,
-      "start_time": 13.013896085185396,
-      "speaker_id": "6241"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/laugh/0040.wav",
-      "duration": 0.5387178604242304,
-      "start_time": 24.68809724716462,
-      "speaker_id": "2086"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/cough/0016.wav",
-      "duration": 1.24,
-      "start_time": 30.76,
-      "speaker_id": "2086"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000017.json b/conversations/conv_000017.json
deleted file mode 100644
index ed6a7a0454a4f15cf87fe9552adde1f62add39cf..0000000000000000000000000000000000000000
--- a/conversations/conv_000017.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.5909969092718685,
-      "duration": 3.5909969092718685,
-      "start_frame": 0,
-      "duration_frames": 57455,
-      "overlap": false,
-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 4.033361886983222,
-      "end_time": 10.861504664529196,
-      "duration": 6.828142777545975,
-      "start_frame": 64533,
-      "duration_frames": 109250,
-      "overlap": false,
-      "utterance_id": "5338-24615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24615.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 11.086037962544019,
-      "end_time": 15.992052528240352,
-      "duration": 4.906014565696333,
-      "start_frame": 177376,
-      "duration_frames": 78496,
-      "overlap": false,
-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 57455
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 16.246691462823975,
-      "end_time": 20.792986933091782,
-      "duration": 4.546295470267808,
-      "start_frame": 259947,
-      "duration_frames": 72740,
-      "overlap": false,
-      "utterance_id": "5338-24640",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 21.65796103279545,
-      "end_time": 25.09200177279806,
-      "duration": 3.4340407400026125,
-      "start_frame": 346527,
-      "duration_frames": 54944,
-      "overlap": false,
-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 135951
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 25.50841757786525,
-      "end_time": 28.75324803877621,
-      "duration": 3.244830460910961,
-      "start_frame": 408134,
-      "duration_frames": 51917,
-      "overlap": false,
-      "utterance_id": "5338-24615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24615.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 109250
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 29.604705442666628,
-      "end_time": 32.0,
-      "duration": 2.395294557333372,
-      "start_frame": 473675,
-      "duration_frames": 38324,
-      "overlap": false,
-      "utterance_id": "5338-24640",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 72740
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/589_1.wav",
-      "duration": 10.690294784580498,
-      "start_time": 13.578575633614422
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/71218_1.wav",
-      "duration": 3.5466787286688293,
-      "start_time": 25.30612547241756
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-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/59326.wav",
-      "duration": 2.8024786269190316,
-      "start_time": 4.384562610929787
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5338/cough/0026.wav",
-      "duration": 1.1595880656752187,
-      "start_time": 2.859522475754952,
-      "speaker_id": "5338"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/251/laugh/0011.wav",
-      "duration": 1.1,
-      "start_time": 16.130636609241638,
-      "speaker_id": "251"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5338/cough/0010.wav",
-      "duration": 0.3251339532370954,
-      "start_time": 29.085999482460526,
-      "speaker_id": "5338"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000018.json b/conversations/conv_000018.json
deleted file mode 100644
index cd9af9c6f40942ac210f080960b04fa8fda8fccb..0000000000000000000000000000000000000000
--- a/conversations/conv_000018.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.2,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 4.9772103068450155,
-      "duration": 4.9772103068450155,
-      "start_frame": 0,
-      "duration_frames": 79635,
-      "overlap": false,
-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 5.02805237272737,
-      "end_time": 11.994790702204527,
-      "duration": 6.966738329477158,
-      "start_frame": 80448,
-      "duration_frames": 111467,
-      "overlap": true,
-      "utterance_id": "1272-141231",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 13.44347605149748,
-      "end_time": 20.280416682336977,
-      "duration": 6.836940630839498,
-      "start_frame": 215095,
-      "duration_frames": 109391,
-      "overlap": false,
-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 79635
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
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-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 27.713090082730936,
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-      "duration": 4.286909917269064,
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-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
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-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/189735.wav",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1272/laugh/0070.wav",
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-      "start_time": 20.477684776170385,
-      "speaker_id": "2086"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000019.json b/conversations/conv_000019.json
deleted file mode 100644
index 82e86857d9275c556b1358b3a14ab933c79cf2d5..0000000000000000000000000000000000000000
--- a/conversations/conv_000019.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.410721870205,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.345187451417475,
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-      "overlap": false,
-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 4.5007637823551505,
-      "end_time": 10.741255366031126,
-      "duration": 6.2404915836759765,
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-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
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-      "start_time": 11.052075728813005,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
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-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 17.891941359769888,
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-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
-      "real_speaker_id": "2086",
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-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 24.154019556107272,
-      "end_time": 27.382846462131763,
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-      "duration_frames": 51661,
-      "overlap": false,
-      "utterance_id": "2035-147961",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.078492453365616,
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-      "duration": 4.3322294168393825,
-      "start_frame": 433255,
-      "duration_frames": 69315,
-      "overlap": true,
-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366511.wav",
-      "duration": 22.160181405895692,
-      "start_time": 9.256113127173931
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-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/213889_3.wav",
-      "duration": 1.3247845804988663,
-      "start_time": 14.751895169631185
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-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/213889_3.wav",
-      "duration": 1.3247845804988663,
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-  "paralinguistic_events": [
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-      "duration": 0.86,
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-      "event_class": "cough",
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-    {
-      "event_class": "cough",
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-      "event_class": "laugh",
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-      "event_class": "laugh",
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-      "duration": 0.84,
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1673/laugh/0003.wav",
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-      "start_time": 28.24537330100776,
-      "speaker_id": "1673"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000020.json b/conversations/conv_000020.json
deleted file mode 100644
index 7ec8745a49284d2ec5807ea2da60cfe762e22cc4..0000000000000000000000000000000000000000
--- a/conversations/conv_000020.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "duration_frames": 85929,
-      "overlap": false,
-      "utterance_id": "6295-64301",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
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-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
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-      "segment_id": "seg0002",
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-      "start_time": 10.999619642701763,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
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-      "speaker_id": 0,
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-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 22.818197387116257,
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-      "duration": 5.300853795846415,
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-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 99062
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-      "segment_id": "seg0005",
-      "speaker_id": 2,
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-      "duration": 2.921493877265842,
-      "start_frame": 465256,
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-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 77370
-    }
-  ],
-  "background_events": [
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-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/588_1.wav",
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-  "foreground_events": [
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/79638.wav",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6295/laugh/0056.wav",
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-      "start_time": 1.5951280396191763,
-      "speaker_id": "6295"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000021.json b/conversations/conv_000021.json
deleted file mode 100644
index 1d331ca19f2b0ad5e5985f6f0e97851e1f9f68ab..0000000000000000000000000000000000000000
--- a/conversations/conv_000021.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "6319-57405",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
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-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
-      "real_speaker_id": "2035",
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-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
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-      "segment_id": "seg0004",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
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-      "position_frames": 0
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-      "start_time": 25.455382352331817,
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-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 31.105692287573547,
-      "end_time": 32.0,
-      "duration": 0.8943077124264533,
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-      "overlap": false,
-      "utterance_id": "6319-64726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/325254_1.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6319/laugh/0019.wav",
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-      "start_time": 0,
-      "speaker_id": "6319"
-    },
-    {
-      "event_class": "cough",
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-      "speaker_id": "3081"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6319/laugh/0026.wav",
-      "duration": 1.86,
-      "start_time": 25.20586925606855,
-      "speaker_id": "6319"
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-    {
-      "event_class": "cough",
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-      "speaker_id": "6319"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000022.json b/conversations/conv_000022.json
deleted file mode 100644
index 398a5c5c827be727ab63ff3bac92315eab3d1a67..0000000000000000000000000000000000000000
--- a/conversations/conv_000022.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 4.822897209513382,
-      "duration": 4.822897209513382,
-      "start_frame": 0,
-      "duration_frames": 77166,
-      "overlap": false,
-      "utterance_id": "1993-147966",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147966.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 4.948721728695544,
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-      "duration": 6.628973174262549,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
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-      "segment_id": "seg0005",
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-      "utterance_id": "1993-147966",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147966.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 77166
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
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-      "event_class": "cough",
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-      "start_time": 25.921008506673168,
-      "speaker_id": "1993"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000023.json b/conversations/conv_000023.json
deleted file mode 100644
index b0e4efa7572755880910cca4f66dcfc225c4a102..0000000000000000000000000000000000000000
--- a/conversations/conv_000023.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.51618296653121,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
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-      "start_time": 0.0,
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-      "utterance_id": "174-84280",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    },
-    {
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-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
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-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
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-      "segment_id": "seg0003",
-      "speaker_id": 0,
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-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 20.688654596719175,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 75948
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-      "segment_id": "seg0005",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 64330
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-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
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-      "utterance_id": "174-50561",
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-  "background_events": [
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-      "event_class": "Frying",
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-  "foreground_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000024.json b/conversations/conv_000024.json
deleted file mode 100644
index a96be0ca1591306275e25355356b80b05fb1fe54..0000000000000000000000000000000000000000
--- a/conversations/conv_000024.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.355905038127183,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
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-      "real_speaker_id": "1919",
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-      "utterance_id": "8842-304647",
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-      "real_speaker_id": "8842",
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
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-      "real_speaker_id": "8842",
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-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Electric_shaver_toothbrush",
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-  "paralinguistic_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000025.json b/conversations/conv_000025.json
deleted file mode 100644
index 83065451c0536a09abcbd6cc697cb5d1d8d9e92e..0000000000000000000000000000000000000000
--- a/conversations/conv_000025.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "utterance_id": "2277-149874",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
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-      "utterance_id": "2277-149874",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
-      "real_speaker_id": "2277",
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-      "utterance_id": "2412-153954",
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-      "position_frames": 0
-    },
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-      "real_speaker_id": "2412",
-      "position_frames": 101251
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
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-      "duration": 2.8348962544735237,
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-      "utterance_id": "3576-138058",
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-      "real_speaker_id": "3576",
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-  "background_events": [
-    {
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-    {
-      "event_class": "Blender",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/laugh/0055.wav",
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/cough/0024.wav",
-      "duration": 1.16,
-      "start_time": 24.911734826954625,
-      "speaker_id": "2412"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000026.json b/conversations/conv_000026.json
deleted file mode 100644
index ad6beb3493db3c8acb1ac660dc53d0bd91f7b71e..0000000000000000000000000000000000000000
--- a/conversations/conv_000026.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.849520084796417,
-      "duration": 3.849520084796417,
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-      "duration_frames": 61592,
-      "overlap": false,
-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275154.flac |",
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-      "segment_id": "seg0005",
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-      "utterance_id": "8297-275155",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275155.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 31.58586730748923,
-      "end_time": 32.0,
-      "duration": 0.4141326925107691,
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-      "duration_frames": 6626,
-      "overlap": false,
-      "utterance_id": "1272-135031",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-135031.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 96963
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/417995.wav",
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-  "paralinguistic_events": [
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-    {
-      "event_class": "laugh",
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-    {
-      "event_class": "laugh",
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-      "duration": 1.36,
-      "start_time": 30.64,
-      "speaker_id": "1272"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000027.json b/conversations/conv_000027.json
deleted file mode 100644
index 15a453c2262c0917ced7733f23fae3c2041bc1b9..0000000000000000000000000000000000000000
--- a/conversations/conv_000027.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
-    {
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.615713765841685,
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-      "start_frame": 0,
-      "duration_frames": 89851,
-      "overlap": false,
-      "utterance_id": "1462-170145",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 6.1883081601065175,
-      "end_time": 12.265586748668419,
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-      "utterance_id": "1272-135031",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-135031.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
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-      "segment_id": "seg0002",
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-      "start_time": 12.81364248634236,
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-      "overlap": true,
-      "utterance_id": "1462-170142",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170142.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 25.444249436280856,
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-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 31.301843211999866,
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-      "duration": 0.6981567880001336,
-      "start_frame": 500829,
-      "duration_frames": 11170,
-      "overlap": false,
-      "utterance_id": "1462-170145",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 89851
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/235566.wav",
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-  "foreground_events": [
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-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/589_1.wav",
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-      "speaker_id": "1462"
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-    {
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-      "duration": 0.98,
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-    },
-    {
-      "event_class": "cough",
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-      "duration": 0.8978832005991275,
-      "start_time": 30.894865937072247,
-      "speaker_id": "1988"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000028.json b/conversations/conv_000028.json
deleted file mode 100644
index d96c81ba3612208025ea74ed0b5dc4b82017c0a3..0000000000000000000000000000000000000000
--- a/conversations/conv_000028.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "start_time": 0.0,
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-      "utterance_id": "2803-161169",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-161169.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 4.793136168792387,
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-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
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-      "utterance_id": "2803-154320",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154320.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
-    },
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-      "speaker_id": 2,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
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-      "segment_id": "seg0004",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 105199
-    },
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-      "utterance_id": "2803-154328",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/71936.wav",
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-  ],
-  "foreground_events": [
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-    {
-      "event_class": "Dog",
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-  "paralinguistic_events": [
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-    {
-      "event_class": "cough",
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-      "speaker_id": "2803"
-    },
-    {
-      "event_class": "cough",
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-      "speaker_id": "7976"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2803/laugh/0030.wav",
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-      "speaker_id": "2803"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/cough/0067.wav",
-      "duration": 1.4676937955667995,
-      "start_time": 22.090261016933802,
-      "speaker_id": "7976"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000029.json b/conversations/conv_000029.json
deleted file mode 100644
index e873529d8976abf9b6f1eeddd9c72d00b51b1f2f..0000000000000000000000000000000000000000
--- a/conversations/conv_000029.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.388916428634587,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 6.69429460384108,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
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-    {
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-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
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-      "position_frames": 94760
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-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
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-    {
-      "segment_id": "seg0004",
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-    {
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-      "utterance_id": "1919-142785",
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-      "real_speaker_id": "1919",
-      "position_frames": 188671
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-  "background_events": [
-    {
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-      "start_time": 7.4046898156103875
-    }
-  ],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/165106.wav",
-      "duration": 3.8247727318534346,
-      "start_time": 27.24643865665659
-    }
-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1919/laugh/0000.wav",
-      "duration": 0.9632516360110113,
-      "start_time": 5.958092998288999,
-      "speaker_id": "1919"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1919/laugh/0060.wav",
-      "duration": 1.34,
-      "start_time": 12.219715432182403,
-      "speaker_id": "1919"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000030.json b/conversations/conv_000030.json
deleted file mode 100644
index 435145897805d95f816775996773171111784226..0000000000000000000000000000000000000000
--- a/conversations/conv_000030.json
+++ /dev/null
@@ -1,165 +0,0 @@
-{
-  "num_segments": 8,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 4.4460842911306955,
-      "duration": 4.4460842911306955,
-      "start_frame": 0,
-      "duration_frames": 71137,
-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 5.003439678067596,
-      "end_time": 8.459382415794488,
-      "duration": 3.4559427377268928,
-      "start_frame": 80055,
-      "duration_frames": 55295,
-      "overlap": false,
-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 9.44648181005497,
-      "end_time": 13.143820266176746,
-      "duration": 3.697338456121777,
-      "start_frame": 151143,
-      "duration_frames": 59157,
-      "overlap": false,
-      "utterance_id": "174-84280",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 13.429499680955827,
-      "end_time": 18.195652414050826,
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-      "start_frame": 214871,
-      "duration_frames": 76258,
-      "overlap": false,
-      "utterance_id": "2035-147961",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 18.476337495454587,
-      "end_time": 21.698143965061938,
-      "duration": 3.22180646960735,
-      "start_frame": 295621,
-      "duration_frames": 51548,
-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 71137
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 22.40653123129187,
-      "end_time": 25.96089284197595,
-      "duration": 3.554361610684084,
-      "start_frame": 358504,
-      "duration_frames": 56869,
-      "overlap": false,
-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 26.078032476017935,
-      "end_time": 29.08556004882036,
-      "duration": 3.0075275728024238,
-      "start_frame": 417248,
-      "duration_frames": 48120,
-      "overlap": false,
-      "utterance_id": "174-168635",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-168635.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0007",
-      "speaker_id": 0,
-      "start_time": 29.61654953631525,
-      "end_time": 32.0,
-      "duration": 2.383450463684749,
-      "start_frame": 473864,
-      "duration_frames": 38135,
-      "overlap": false,
-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 55295
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/432755.wav",
-      "duration": 0.2939909297052154,
-      "start_time": 6.424672135832915
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-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/235566.wav",
-      "duration": 3.3503434844376074,
-      "start_time": 10.702216739755332
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/laugh/0000.wav",
-      "duration": 0.5230923375369627,
-      "start_time": 0.992915301643794,
-      "speaker_id": "3170"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/174/cough/0041.wav",
-      "duration": 0.5576014367670441,
-      "start_time": 13.24342834478812,
-      "speaker_id": "174"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/cough/0034.wav",
-      "duration": 0.8208251672505105,
-      "start_time": 17.568631664402755,
-      "speaker_id": "3170"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2035/cough/0074.wav",
-      "duration": 0.5750063414569946,
-      "start_time": 26.095027947052415,
-      "speaker_id": "2035"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000031.json b/conversations/conv_000031.json
deleted file mode 100644
index 52ffc3acadef902338df4eddc2682c7b829d4a55..0000000000000000000000000000000000000000
--- a/conversations/conv_000031.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.5403269596680196,
-      "duration": 3.5403269596680196,
-      "start_frame": 0,
-      "duration_frames": 56645,
-      "overlap": false,
-      "utterance_id": "2412-153954",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.224458908939945,
-      "end_time": 10.376728255634216,
-      "duration": 6.15226934669427,
-      "start_frame": 67591,
-      "duration_frames": 98436,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 10.743459589701844,
-      "end_time": 15.032190854832377,
-      "duration": 4.288731265130533,
-      "start_frame": 171895,
-      "duration_frames": 68619,
-      "overlap": false,
-      "utterance_id": "2412-153954",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 56645
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 16.06257672454647,
-      "end_time": 22.528928772788788,
-      "duration": 6.466352048242319,
-      "start_frame": 257001,
-      "duration_frames": 103461,
-      "overlap": false,
-      "utterance_id": "6241-66616",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 22.7277908650345,
-      "end_time": 29.00787053002812,
-      "duration": 6.2800796649936235,
-      "start_frame": 363644,
-      "duration_frames": 100481,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 98436
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 29.352338988704695,
-      "end_time": 32.0,
-      "duration": 2.6476610112953054,
-      "start_frame": 469637,
-      "duration_frames": 42362,
-      "overlap": false,
-      "utterance_id": "2412-153947",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/588_1.wav",
-      "duration": 2.0195289956595293,
-      "start_time": 9.227864006961456
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-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/417995.wav",
-      "duration": 4.655153775493037,
-      "start_time": 21.502831288018108
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3576/laugh/0024.wav",
-      "duration": 1.0,
-      "start_time": 2.953391375910186,
-      "speaker_id": "3576"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3576/cough/0040.wav",
-      "duration": 0.7186680900501883,
-      "start_time": 10.535625382363914,
-      "speaker_id": "3576"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3576/laugh/0016.wav",
-      "duration": 0.7405481091796147,
-      "start_time": 21.863914673190756,
-      "speaker_id": "3576"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000032.json b/conversations/conv_000032.json
deleted file mode 100644
index 00cae09bf7362c00a44b189e5a8da93256822a69..0000000000000000000000000000000000000000
--- a/conversations/conv_000032.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "duration": 5.929349708267161,
-      "start_frame": 0,
-      "duration_frames": 94869,
-      "overlap": false,
-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 6.5936419735747975,
-      "end_time": 12.155059244296515,
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-      "duration_frames": 88982,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
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-      "start_time": 13.283956110904377,
-      "end_time": 17.413330840077332,
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-      "duration_frames": 66069,
-      "overlap": false,
-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 17.524150928350664,
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-      "duration": 5.314170398444626,
-      "start_frame": 280386,
-      "duration_frames": 85026,
-      "overlap": false,
-      "utterance_id": "1462-170145",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 23.012177370686242,
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-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 88982
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.14790904279794,
-      "end_time": 32.0,
-      "duration": 4.8520909572020585,
-      "start_frame": 434366,
-      "duration_frames": 77633,
-      "overlap": false,
-      "utterance_id": "1462-170142",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170142.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/146200_0.wav",
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-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/265541.wav",
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3576/laugh/0015.wav",
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-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/251/laugh/0039.wav",
-      "duration": 1.06,
-      "start_time": 11.927190784717052,
-      "speaker_id": "251"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/cough/0087.wav",
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-      "start_time": 16.88551068251305,
-      "speaker_id": "1462"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3576/laugh/0004.wav",
-      "duration": 1.1963577796088374,
-      "start_time": 24.624432213582693,
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/laugh/0003.wav",
-      "duration": 0.92,
-      "start_time": 26.11593669588417,
-      "speaker_id": "1462"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000033.json b/conversations/conv_000033.json
deleted file mode 100644
index e6c2c99c49f50dd60f47b37e1df2f47c5bfb5141..0000000000000000000000000000000000000000
--- a/conversations/conv_000033.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 4.2233699824321,
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-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "1462-170138",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170138.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "overlap": false,
-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
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-    {
-      "segment_id": "seg0002",
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-      "start_time": 8.936358061528772,
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-      "utterance_id": "1462-170142",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170142.flac |",
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-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 52888
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-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170138.flac |",
-      "real_speaker_id": "1462",
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-      "segment_id": "seg0005",
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-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
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-      "position_frames": 0
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-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 30.125099835119347,
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-      "utterance_id": "2412-153954",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    }
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-  "background_events": [
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-      "event_class": "Vacuum_cleaner",
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/laugh/0035.wav",
-      "duration": 0.8622447278853018,
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-      "speaker_id": "2412"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/laugh/0065.wav",
-      "duration": 0.9682945523264055,
-      "start_time": 23.12744681540658,
-      "speaker_id": "1462"
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-    {
-      "event_class": "laugh",
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-      "duration": 1.1,
-      "start_time": 30.9,
-      "speaker_id": "2412"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000034.json b/conversations/conv_000034.json
deleted file mode 100644
index 0e41a6321dad28386e905491f121eddf3e60a379..0000000000000000000000000000000000000000
--- a/conversations/conv_000034.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 31.98569643140927,
-  "num_speakers": 2,
-  "overlap_rate": 0.2,
-  "segments": [
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-      "start_time": 0.0,
-      "end_time": 5.815069353417135,
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-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.968648626826594,
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-      "duration": 4.261784727205996,
-      "start_frame": 111498,
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-      "overlap": false,
-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 11.930379003528738,
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-      "start_frame": 190886,
-      "duration_frames": 88823,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 93041
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 17.865424526912893,
-      "end_time": 23.689397993750234,
-      "duration": 5.823973466837343,
-      "start_frame": 285846,
-      "duration_frames": 93183,
-      "overlap": true,
-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 68188
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 25.22901548485838,
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-      "duration": 6.75668094655089,
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-      "duration_frames": 108106,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 181864
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/59326.wav",
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/406067_1.wav",
-      "duration": 1.923178615706127,
-      "start_time": 18.252027489383288
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-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/99181_1.wav",
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-  "paralinguistic_events": [
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-      "start_time": 21.282384944890563,
-      "speaker_id": "84"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000035.json b/conversations/conv_000035.json
deleted file mode 100644
index 458cd80a2dc9fc07c1e406bdd5bbeadf18d13e7b..0000000000000000000000000000000000000000
--- a/conversations/conv_000035.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 5.005543507771771,
-      "duration": 5.005543507771771,
-      "start_frame": 0,
-      "duration_frames": 80088,
-      "overlap": false,
-      "utterance_id": "8842-302196",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302196.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.432575108910804,
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-      "overlap": false,
-      "utterance_id": "8842-302203",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302203.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
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-      "duration_frames": 87402,
-      "overlap": false,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.23482426372619,
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-      "overlap": false,
-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 21.25395565663481,
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-      "overlap": false,
-      "utterance_id": "8842-304647",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-304647.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 25.864850958647573,
-      "end_time": 30.33696898192281,
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-      "start_frame": 413837,
-      "duration_frames": 71553,
-      "overlap": false,
-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 30.685207182328472,
-      "end_time": 32.0,
-      "duration": 1.3147928176715276,
-      "start_frame": 490963,
-      "duration_frames": 21036,
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-      "utterance_id": "8842-302196",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302196.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 80088
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/417229.wav",
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-  "foreground_events": [
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/laugh/0053.wav",
-      "duration": 1.3563161252592144,
-      "start_time": 19.814046612441082,
-      "speaker_id": "8842"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0049.wav",
-      "duration": 1.4,
-      "start_time": 24.291866756508657,
-      "speaker_id": "1988"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000036.json b/conversations/conv_000036.json
deleted file mode 100644
index 235cb351b7ec4924ba8b72376035fff7db0f9023..0000000000000000000000000000000000000000
--- a/conversations/conv_000036.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.877052385143426,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.7273570487137784,
-      "duration": 3.7273570487137784,
-      "start_frame": 0,
-      "duration_frames": 59637,
-      "overlap": false,
-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.722652224972351,
-      "end_time": 8.407163333206523,
-      "duration": 3.684511108234172,
-      "start_frame": 75562,
-      "duration_frames": 58952,
-      "overlap": false,
-      "utterance_id": "7850-73752",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-73752.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 9.898919100690488,
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-      "duration": 4.7790494041174725,
-      "start_frame": 158382,
-      "duration_frames": 76464,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 14.964904115804456,
-      "end_time": 19.010469797287335,
-      "duration": 4.045565681482878,
-      "start_frame": 239438,
-      "duration_frames": 64729,
-      "overlap": false,
-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 19.139296213312246,
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-      "duration_frames": 96830,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 76464
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 25.76382317857874,
-      "end_time": 31.877052385143426,
-      "duration": 6.113229206564686,
-      "start_frame": 412221,
-      "duration_frames": 97811,
-      "overlap": false,
-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/15292.wav",
-      "duration": 15.55204081632653,
-      "start_time": 12.348628546564292
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/79440_0.wav",
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-      "start_time": 20.428059403751515
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7850/cough/0044.wav",
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-      "start_time": 8.424673066012078,
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-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/laugh/0008.wav",
-      "duration": 1.0176256182698507,
-      "start_time": 8.78163181113644,
-      "speaker_id": "422"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6313/laugh/0065.wav",
-      "duration": 0.8982446111436084,
-      "start_time": 13.870644455117244,
-      "speaker_id": "6313"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6313/cough/0038.wav",
-      "duration": 1.317731082018756,
-      "start_time": 17.378642521368516,
-      "speaker_id": "6313"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6313/laugh/0086.wav",
-      "duration": 1.1834287346558774,
-      "start_time": 30.816571265344123,
-      "speaker_id": "6313"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000037.json b/conversations/conv_000037.json
deleted file mode 100644
index 8eada82df3967c58ad8d7b4db2794fe7447c73d6..0000000000000000000000000000000000000000
--- a/conversations/conv_000037.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
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-      "overlap": false,
-      "utterance_id": "6319-64726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.180721627410218,
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-      "duration": 4.819278372589782,
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-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 119214
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/35021_3.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/laugh/0041.wav",
-      "duration": 1.16,
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-    {
-      "event_class": "cough",
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-      "duration": 0.9283037822657434,
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-      "speaker_id": "6319"
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-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/cough/0050.wav",
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-      "speaker_id": "3853"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000038.json b/conversations/conv_000038.json
deleted file mode 100644
index 5960eaaba124a10b8cb3bf04b52ee0688f438b17..0000000000000000000000000000000000000000
--- a/conversations/conv_000038.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.465866403346404,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 4.52742745267048,
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
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-      "speaker_id": 1,
-      "start_time": 12.078522622035173,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
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-    {
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-      "utterance_id": "5536-43358",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/408348_1.wav",
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-  "foreground_events": [
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-      "event_class": "Electric_shaver_toothbrush",
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-  "paralinguistic_events": [
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-      "duration": 1.24,
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-      "speaker_id": "3853"
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-    {
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-    {
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-      "duration": 1.56,
-      "start_time": 29.842990244345785,
-      "speaker_id": "5536"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000039.json b/conversations/conv_000039.json
deleted file mode 100644
index 83d0f3bef1e0d78dcdb0f25012ac06aa6311b9ee..0000000000000000000000000000000000000000
--- a/conversations/conv_000039.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
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-  "num_speakers": 2,
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-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
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-      "utterance_id": "1673-143396",
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-      "real_speaker_id": "1673",
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-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 30.98991360509381,
-      "end_time": 31.333398086149955,
-      "duration": 0.3434844810561444,
-      "start_frame": 495838,
-      "duration_frames": 5495,
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-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 163399
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-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/433717.wav",
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-  "foreground_events": [
-    {
-      "event_class": "Dishes",
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-    {
-      "event_class": "Blender",
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-  "paralinguistic_events": [
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-      "duration": 0.96,
-      "start_time": 16.141099358981506,
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/cough/0038.wav",
-      "duration": 1.04,
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-    {
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-      "speaker_id": "1673"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000040.json b/conversations/conv_000040.json
deleted file mode 100644
index 0b70b76acedad52aa4f746e6d963074404879097..0000000000000000000000000000000000000000
--- a/conversations/conv_000040.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 31.62470880213129,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "end_time": 4.943644032530778,
-      "duration": 4.943644032530778,
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-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
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-    },
-    {
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-      "utterance_id": "1993-147965",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147965.flac |",
-      "real_speaker_id": "1993",
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-    {
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-      "start_time": 13.771544193625319,
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-      "duration_frames": 65176,
-      "overlap": false,
-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
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-    {
-      "segment_id": "seg0004",
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-      "utterance_id": "6313-66129",
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-  "background_events": [],
-  "foreground_events": [
-    {
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/187340.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/laugh/0050.wav",
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-      "start_time": 2.0415569700626066,
-      "speaker_id": "3853"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1993/cough/0033.wav",
-      "duration": 1.0600940882905525,
-      "start_time": 7.919079615266851,
-      "speaker_id": "1993"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/laugh/0038.wav",
-      "duration": 1.044130400598728,
-      "start_time": 24.144457195361706,
-      "speaker_id": "3853"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000041.json b/conversations/conv_000041.json
deleted file mode 100644
index b5ea41ffc69aafe330836e3e606c82fcb9ea79e3..0000000000000000000000000000000000000000
--- a/conversations/conv_000041.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.9136302019124893,
-      "duration": 3.9136302019124893,
-      "start_frame": 0,
-      "duration_frames": 62618,
-      "overlap": false,
-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.590153062592187,
-      "end_time": 8.490418766927192,
-      "duration": 3.900265704335005,
-      "start_frame": 73442,
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-      "overlap": false,
-      "utterance_id": "7850-111771",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-111771.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
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-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 9.034929474148502,
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-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
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-      "start_time": 14.411154289795263,
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-      "utterance_id": "7850-73752",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-73752.flac |",
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-      "position_frames": 0
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 19.033300868129086,
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-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 146276
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 22.636369339250805,
-      "end_time": 28.067069370435284,
-      "duration": 5.430700031184479,
-      "start_frame": 362181,
-      "duration_frames": 86891,
-      "overlap": false,
-      "utterance_id": "5536-43358",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 28.200559730209793,
-      "end_time": 32.0,
-      "duration": 3.7994402697902068,
-      "start_frame": 451208,
-      "duration_frames": 60791,
-      "overlap": false,
-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 196381
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/365519_1.wav",
-      "duration": 0.205578231292517,
-      "start_time": 23.217850728159995
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-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/47000.wav",
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-      "start_time": 19.216202759094838
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/laugh/0017.wav",
-      "duration": 0.6883246848477156,
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-      "speaker_id": "652"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7850/laugh/0020.wav",
-      "duration": 0.92,
-      "start_time": 16.918119195044532,
-      "speaker_id": "7850"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/cough/0012.wav",
-      "duration": 0.88,
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-      "speaker_id": "652"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/laugh/0055.wav",
-      "duration": 1.2,
-      "start_time": 28.553273407619134,
-      "speaker_id": "652"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000042.json b/conversations/conv_000042.json
deleted file mode 100644
index 997bbf508a8e9c1571535de34fe1f59f43e0b998..0000000000000000000000000000000000000000
--- a/conversations/conv_000042.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 6.516053246879165,
-      "duration": 6.516053246879165,
-      "start_frame": 0,
-      "duration_frames": 104256,
-      "overlap": false,
-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 7.315670824689581,
-      "end_time": 12.646959133378772,
-      "duration": 5.33128830868919,
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-      "duration_frames": 85300,
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-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 13.397692596190023,
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-      "duration": 5.279731930950426,
-      "start_frame": 214363,
-      "duration_frames": 84475,
-      "overlap": false,
-      "utterance_id": "7976-105575",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 19.751077616433882,
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-      "duration": 5.374376842683754,
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-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 24.61612683682523,
-      "end_time": 28.14915652101144,
-      "duration": 3.5330296841862125,
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-      "duration_frames": 56528,
-      "overlap": true,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 85990
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 29.601302449751905,
-      "end_time": 32.0,
-      "duration": 2.3986975502480945,
-      "start_frame": 473620,
-      "duration_frames": 38379,
-      "overlap": false,
-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 104256
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/59327.wav",
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-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/2503.wav",
-      "duration": 3.5203725074466536,
-      "start_time": 22.3129212219578
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-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/158737_1.wav",
-      "duration": 2.1082769988535985,
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/cough/0010.wav",
-      "duration": 0.8775335414630843,
-      "start_time": 27.140263076401396,
-      "speaker_id": "422"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/laugh/0016.wav",
-      "duration": 1.64,
-      "start_time": 29.773292092145294,
-      "speaker_id": "7976"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000043.json b/conversations/conv_000043.json
deleted file mode 100644
index 23c19ed8d4827192905791a68d3cbce99d0f3cc1..0000000000000000000000000000000000000000
--- a/conversations/conv_000043.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "start_time": 0.0,
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-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.505896050997908,
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-      "duration_frames": 81652,
-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
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-      "utterance_id": "1462-170138",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170138.flac |",
-      "real_speaker_id": "1462",
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-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 65994
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 21.465184348704614,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 144623
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
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-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 81652
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/59326.wav",
-      "duration": 13.7055370066708,
-      "start_time": 9.602763382354835
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/271399_3.wav",
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-    {
-      "event_class": "Running_water",
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-  "paralinguistic_events": [
-    {
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-    {
-      "event_class": "cough",
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-      "speaker_id": "3752"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/laugh/0038.wav",
-      "duration": 1.4,
-      "start_time": 7.342513239150161,
-      "speaker_id": "2078"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3752/laugh/0089.wav",
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-      "speaker_id": "3752"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/laugh/0034.wav",
-      "duration": 0.5764623155336637,
-      "start_time": 31.423537684466336,
-      "speaker_id": "2078"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000044.json b/conversations/conv_000044.json
deleted file mode 100644
index b6737439d374af1fce1612ab32427d9273819cc3..0000000000000000000000000000000000000000
--- a/conversations/conv_000044.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.704016130734085,
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
-    },
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 81228
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 29.617526901857417,
-      "end_time": 32.0,
-      "duration": 2.382473098142583,
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-      "duration_frames": 38119,
-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 263901
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/380156_0.wav",
-      "duration": 2.676397891668341,
-      "start_time": 20.351090507490024
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-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/35021_3.wav",
-      "duration": 1.7310046639497436,
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/laugh/0010.wav",
-      "duration": 0.6369632038170053,
-      "start_time": 3.2670167772689,
-      "speaker_id": "3000"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/laugh/0004.wav",
-      "duration": 0.59135289964924,
-      "start_time": 8.620110522745682,
-      "speaker_id": "3000"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/cough/0044.wav",
-      "duration": 1.12,
-      "start_time": 22.992580203519527,
-      "speaker_id": "3000"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000045.json b/conversations/conv_000045.json
deleted file mode 100644
index 4384d4dd0c493f01e6738d9d8cdf76baf5d304c4..0000000000000000000000000000000000000000
--- a/conversations/conv_000045.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.7520676237583235,
-      "duration": 3.7520676237583235,
-      "start_frame": 0,
-      "duration_frames": 60033,
-      "overlap": false,
-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 3.996754533146926,
-      "end_time": 10.99376312612953,
-      "duration": 6.9970085929826045,
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-      "duration_frames": 111952,
-      "overlap": false,
-      "utterance_id": "174-84280",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 11.20372443773986,
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-      "duration": 5.300022276757622,
-      "start_frame": 179259,
-      "duration_frames": 84800,
-      "overlap": false,
-      "utterance_id": "174-50561",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-50561.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 17.041396421613193,
-      "end_time": 23.8152450122045,
-      "duration": 6.773848590591307,
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-      "overlap": false,
-      "utterance_id": "1272-141231",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 25.236700513046415,
-      "end_time": 28.77663225600586,
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-      "overlap": false,
-      "utterance_id": "6319-64726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 29.679485590595128,
-      "end_time": 32.0,
-      "duration": 2.320514409404872,
-      "start_frame": 474871,
-      "duration_frames": 37128,
-      "overlap": false,
-      "utterance_id": "6319-57405",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/49538_1.wav",
-      "duration": 2.480928742738307,
-      "start_time": 26.47846786417612
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-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/146200_0.wav",
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-  "paralinguistic_events": [
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-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1272/cough/0040.wav",
-      "duration": 1.34,
-      "start_time": 0,
-      "speaker_id": "1272"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/174/laugh/0037.wav",
-      "duration": 1.32,
-      "start_time": 11.15754018612223,
-      "speaker_id": "174"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1272/laugh/0017.wav",
-      "duration": 1.5354842703510934,
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-      "speaker_id": "1272"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6319/laugh/0035.wav",
-      "duration": 0.8469198924739332,
-      "start_time": 25.559735206628513,
-      "speaker_id": "6319"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000046.json b/conversations/conv_000046.json
deleted file mode 100644
index 166a0b5f3c4fad1724611a65f1c2de471df717cc..0000000000000000000000000000000000000000
--- a/conversations/conv_000046.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 0,
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-      "utterance_id": "8297-275155",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275155.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 4.678880153304698,
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-      "duration": 6.225301954298393,
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-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
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-      "segment_id": "seg0002",
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-      "start_time": 11.997707410015394,
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-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 18.180788528456404,
-      "end_time": 22.87519783639401,
-      "duration": 4.694409307937603,
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-      "overlap": false,
-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 24.09780432065881,
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-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 75110
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-  ],
-  "background_events": [],
-  "foreground_events": [
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-  "paralinguistic_events": [
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-      "speaker_id": "2902"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000047.json b/conversations/conv_000047.json
deleted file mode 100644
index 599cba1491a43037ea879667161af381335d5b7e..0000000000000000000000000000000000000000
--- a/conversations/conv_000047.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 31.842037110561137,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
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-      "utterance_id": "6241-61946",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
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-      "utterance_id": "8842-302201",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 21.153755009890425,
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-      "duration_frames": 55145,
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-      "utterance_id": "6241-61943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
-      "real_speaker_id": "6241",
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-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
-      "real_speaker_id": "6241",
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6313/laugh/0074.wav",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000048.json b/conversations/conv_000048.json
deleted file mode 100644
index b0d966cee6d87ab3f29b5afe68e61be3a5d60706..0000000000000000000000000000000000000000
--- a/conversations/conv_000048.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
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-      "utterance_id": "2277-149897",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149897.flac |",
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-      "position_frames": 0
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-    {
-      "segment_id": "seg0001",
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-      "real_speaker_id": "3752",
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-      "segment_id": "seg0002",
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-      "utterance_id": "8297-275154",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275154.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
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-    {
-      "segment_id": "seg0004",
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-    {
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-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/235566.wav",
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-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/72558_3.wav",
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2277/laugh/0016.wav",
-      "duration": 1.12,
-      "start_time": 0,
-      "speaker_id": "2277"
-    },
-    {
-      "event_class": "cough",
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-      "event_class": "cough",
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2277/cough/0052.wav",
-      "duration": 0.39669697474381627,
-      "start_time": 22.940813847999916,
-      "speaker_id": "2277"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3752/laugh/0097.wav",
-      "duration": 1.18,
-      "start_time": 28.685441488381166,
-      "speaker_id": "3752"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000049.json b/conversations/conv_000049.json
deleted file mode 100644
index 71051785a8f6d1762f7b79909e812b5bc15f0dcc..0000000000000000000000000000000000000000
--- a/conversations/conv_000049.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 6.950790287894009,
-      "duration": 6.950790287894009,
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-      "overlap": false,
-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 7.5201121676083265,
-      "end_time": 11.085695981260628,
-      "duration": 3.565583813652301,
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-      "utterance_id": "8842-302201",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 11.40675899683768,
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-      "start_frame": 182508,
-      "duration_frames": 88856,
-      "overlap": false,
-      "utterance_id": "8842-302201",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 57049
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 17.703210097876926,
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-      "duration": 5.001065182348945,
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-      "duration_frames": 80017,
-      "overlap": false,
-      "utterance_id": "3536-8226",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 23.13409574833407,
-      "end_time": 28.12124331631792,
-      "duration": 4.987147567983851,
-      "start_frame": 370145,
-      "duration_frames": 79794,
-      "overlap": false,
-      "utterance_id": "1462-170142",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170142.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 29.402564618616317,
-      "end_time": 32.0,
-      "duration": 2.597435381383683,
-      "start_frame": 470441,
-      "duration_frames": 41558,
-      "overlap": false,
-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 111212
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/71218_1.wav",
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-  "foreground_events": [
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-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/84654.wav",
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-      "start_time": 30.08555754420788
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-      "event_class": "Dishes",
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-      "duration": 0.41732426303854875,
-      "start_time": 12.244450360071411
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3536/laugh/0001.wav",
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-      "event_class": "cough",
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-      "speaker_id": "1462"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000050.json b/conversations/conv_000050.json
deleted file mode 100644
index 688562f165a91adc5f12f73c428b3ab6196a9e46..0000000000000000000000000000000000000000
--- a/conversations/conv_000050.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 2,
-      "start_time": 0.0,
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-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "8842-304647",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-304647.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
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-      "utterance_id": "8842-302201",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 19.817056329871512,
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-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 25.08183925114243,
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-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 31.431247368267012,
-      "end_time": 32.0,
-      "duration": 0.5687526317329876,
-      "start_frame": 502899,
-      "duration_frames": 9100,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 77769
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/589_1.wav",
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-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/cough/0008.wav",
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-    {
-      "event_class": "laugh",
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-      "speaker_id": "1673"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1673/laugh/0035.wav",
-      "duration": 1.74,
-      "start_time": 30.26,
-      "speaker_id": "1673"
-    },
-    {
-      "event_class": "cough",
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-      "start_time": 31.140496062166598,
-      "speaker_id": "422"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000051.json b/conversations/conv_000051.json
deleted file mode 100644
index 75d2a7f9835463b412586d5d0ac28b7f8f0523ee..0000000000000000000000000000000000000000
--- a/conversations/conv_000051.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.817077953356055,
-      "duration": 3.817077953356055,
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-      "overlap": false,
-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.585162615609379,
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-      "start_frame": 73362,
-      "duration_frames": 81722,
-      "overlap": false,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
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-      "speaker_id": 0,
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-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.935520393069094,
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-      "overlap": false,
-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.917619272047236,
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-      "overlap": false,
-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 87768
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 30.191514372071488,
-      "end_time": 32.0,
-      "duration": 1.808485627928512,
-      "start_frame": 483064,
-      "duration_frames": 28935,
-      "overlap": false,
-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 86523
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/589_1.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0070.wav",
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-    },
-    {
-      "event_class": "cough",
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3752/laugh/0023.wav",
-      "duration": 1.3,
-      "start_time": 29.698874716343244,
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-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0049.wav",
-      "duration": 1.4,
-      "start_time": 28.657932164642077,
-      "speaker_id": "1988"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000052.json b/conversations/conv_000052.json
deleted file mode 100644
index 00085150dd8096c1f6b66d8697ecbe7a78d6ba98..0000000000000000000000000000000000000000
--- a/conversations/conv_000052.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.74002975810459,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 4.701972330576556,
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-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
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-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 5.138384514868604,
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
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-      "segment_id": "seg0002",
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-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
-      "real_speaker_id": "2086",
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-      "segment_id": "seg0005",
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-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 76818
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/331161.wav",
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-    {
-      "event_class": "laugh",
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-      "event_class": "cough",
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-      "speaker_id": "251"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000053.json b/conversations/conv_000053.json
deleted file mode 100644
index da891b816853703af5c4d344dc4a7384dd247df2..0000000000000000000000000000000000000000
--- a/conversations/conv_000053.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.558141390876091,
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
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-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.20705962515288,
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-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 20.888795502271947,
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-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 71133
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 26.04030497064028,
-      "end_time": 32.0,
-      "duration": 5.959695029359722,
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-      "overlap": false,
-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 64830
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
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-    {
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-      "speaker_id": "1673"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000054.json b/conversations/conv_000054.json
deleted file mode 100644
index ef549ba464caea365a91570bec54cd71ed50bda8..0000000000000000000000000000000000000000
--- a/conversations/conv_000054.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.411771986782142,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
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-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
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-      "start_time": 9.259244305792421,
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-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 0
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-      "overlap": true,
-      "utterance_id": "1272-135031",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-135031.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 20.96975518703428,
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-      "duration_frames": 48297,
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-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 72997
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 24.952119645259536,
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-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 132637
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/352266.wav",
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-      "event_class": "Running_water",
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/laugh/0001.wav",
-      "duration": 1.32,
-      "start_time": 0,
-      "speaker_id": "422"
-    },
-    {
-      "event_class": "laugh",
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-      "event_class": "laugh",
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000055.json b/conversations/conv_000055.json
deleted file mode 100644
index de471dbea0d999c41880e9dcac92634466dcf973..0000000000000000000000000000000000000000
--- a/conversations/conv_000055.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.45198832452782,
-  "num_speakers": 3,
-  "overlap_rate": 0.5,
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-      "utterance_id": "2035-147961",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
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-      "utterance_id": "174-84280",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
-      "real_speaker_id": "174",
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-    {
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-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
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-    {
-      "segment_id": "seg0003",
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-      "segment_id": "seg0004",
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-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 52310
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "utterance_id": "174-50561",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-50561.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
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-  ],
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-  "foreground_events": [
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-    {
-      "event_class": "cough",
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-      "duration": 1.12,
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000056.json b/conversations/conv_000056.json
deleted file mode 100644
index 6844294636c79d7a2a184a56b73953dd705f1cb2..0000000000000000000000000000000000000000
--- a/conversations/conv_000056.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 30.77764036374902,
-  "num_speakers": 3,
-  "overlap_rate": 0.6,
-  "segments": [
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-      "speaker_id": 2,
-      "start_time": 0.0,
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-      "utterance_id": "1462-170142",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170142.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "overlap": true,
-      "utterance_id": "2412-153947",
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-      "real_speaker_id": "2412",
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-      "utterance_id": "1462-170145",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
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-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 24.69775360358936,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
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-      "position_frames": 0
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-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Vacuum_cleaner",
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-  "paralinguistic_events": [
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/laugh/0001.wav",
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-      "speaker_id": "2412"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000057.json b/conversations/conv_000057.json
deleted file mode 100644
index da24712a071a69e3d926ca5ccd2c11786c053c0e..0000000000000000000000000000000000000000
--- a/conversations/conv_000057.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "speaker_id": 0,
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-      "utterance_id": "84-121123",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121123.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 5.7911033698673275,
-      "end_time": 10.991326411980097,
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-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
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-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
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-      "start_time": 16.519995015692118,
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-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
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-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
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-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
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-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 31.302744893582805,
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-      "duration": 0.6972551064171952,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121123.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 87842
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/220019.wav",
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-      "start_time": 19.76048085238494,
-      "speaker_id": "84"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000058.json b/conversations/conv_000058.json
deleted file mode 100644
index aea011701f75156f2307ac5c57e4cc117140b6e5..0000000000000000000000000000000000000000
--- a/conversations/conv_000058.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "1272-135031",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-135031.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
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-      "real_speaker_id": "1272",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-135031.flac |",
-      "real_speaker_id": "1272",
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-    },
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-      "segment_id": "seg0004",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 72819
-    },
-    {
-      "segment_id": "seg0005",
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-      "duration": 2.5327113551215916,
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-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/189735.wav",
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-      "start_time": 0,
-      "speaker_id": "1272"
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-    {
-      "event_class": "cough",
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-      "duration": 1.0171589278426805,
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-    {
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-      "start_time": 11.710345881164026,
-      "speaker_id": "3000"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000059.json b/conversations/conv_000059.json
deleted file mode 100644
index 555d15c5cd22d0f46152c21d60982f2fb25a8dec..0000000000000000000000000000000000000000
--- a/conversations/conv_000059.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
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-    {
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-      "duration_frames": 74033,
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-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121123.flac |",
-      "real_speaker_id": "84",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121123.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 54200
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 29.407567288717797,
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-      "duration": 2.5924327112822034,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/366512.wav",
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-  "paralinguistic_events": [
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-    {
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-      "speaker_id": "3576"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000060.json b/conversations/conv_000060.json
deleted file mode 100644
index 455b6e7cd67dab581886e1ff4c282b5365186084..0000000000000000000000000000000000000000
--- a/conversations/conv_000060.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.911690528130407,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 6.09786485925855,
-      "duration": 6.09786485925855,
-      "start_frame": 0,
-      "duration_frames": 97565,
-      "overlap": false,
-      "utterance_id": "2277-149896",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149896.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.565497924193474,
-      "end_time": 11.617798248362194,
-      "duration": 5.052300324168719,
-      "start_frame": 105047,
-      "duration_frames": 80836,
-      "overlap": false,
-      "utterance_id": "2277-149874",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 12.916538335837734,
-      "end_time": 16.34735670824398,
-      "duration": 3.4308183724062435,
-      "start_frame": 206664,
-      "duration_frames": 54893,
-      "overlap": false,
-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.33525335099691,
-      "end_time": 21.368407475771697,
-      "duration": 5.033154124774784,
-      "start_frame": 261364,
-      "duration_frames": 80530,
-      "overlap": true,
-      "utterance_id": "2277-149896",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149896.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 97565
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 22.792442481487164,
-      "end_time": 27.98542190341849,
-      "duration": 5.192979421931326,
-      "start_frame": 364679,
-      "duration_frames": 83087,
-      "overlap": false,
-      "utterance_id": "2412-153947",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 28.540879976902524,
-      "end_time": 31.911690528130407,
-      "duration": 3.370810551227885,
-      "start_frame": 456654,
-      "duration_frames": 53932,
-      "overlap": false,
-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366511.wav",
-      "duration": 22.160181405895692,
-      "start_time": 5.948899571633119
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/20097_0.wav",
-      "duration": 0.31501133786848073,
-      "start_time": 24.49780954692879
-    },
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/352272.wav",
-      "duration": 1.4250636191695834,
-      "start_time": 5.214189995574203
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6313/laugh/0093.wav",
-      "duration": 1.034838381765333,
-      "start_time": 11.679991396692742,
-      "speaker_id": "6313"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2277/laugh/0057.wav",
-      "duration": 0.86,
-      "start_time": 19.504847992464587,
-      "speaker_id": "2277"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/cough/0004.wav",
-      "duration": 0.8871351132619236,
-      "start_time": 21.760753633023082,
-      "speaker_id": "2412"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000061.json b/conversations/conv_000061.json
deleted file mode 100644
index 2c9698fef309b94e9e133e6a8a74e030955bccca..0000000000000000000000000000000000000000
--- a/conversations/conv_000061.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 4.444661612200468,
-      "duration": 4.444661612200468,
-      "start_frame": 0,
-      "duration_frames": 71114,
-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 5.474541094189688,
-      "end_time": 10.241129201720277,
-      "duration": 4.766588107530589,
-      "start_frame": 87592,
-      "duration_frames": 76265,
-      "overlap": false,
-      "utterance_id": "8842-302203",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302203.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 10.322648366259006,
-      "end_time": 15.49436230595225,
-      "duration": 5.1717139396932446,
-      "start_frame": 165162,
-      "duration_frames": 82747,
-      "overlap": true,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 71114
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 15.990924197183952,
-      "end_time": 21.828129281723626,
-      "duration": 5.837205084539673,
-      "start_frame": 255854,
-      "duration_frames": 93395,
-      "overlap": true,
-      "utterance_id": "8842-302201",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 23.09035076123352,
-      "end_time": 28.41215240177734,
-      "duration": 5.32180164054382,
-      "start_frame": 369445,
-      "duration_frames": 85148,
-      "overlap": false,
-      "utterance_id": "8842-304647",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-304647.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 29.611174364826645,
-      "end_time": 32.0,
-      "duration": 2.3888256351733546,
-      "start_frame": 473778,
-      "duration_frames": 38221,
-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 153861
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/352273.wav",
-      "duration": 3.9734115822800495,
-      "start_time": 27.90380560488298
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/cough/0037.wav",
-      "duration": 0.7467685182876573,
-      "start_time": 4.62998239061434,
-      "speaker_id": "8842"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/laugh/0038.wav",
-      "duration": 0.9539347743931326,
-      "start_time": 17.355014412086593,
-      "speaker_id": "8842"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/laugh/0009.wav",
-      "duration": 1.28,
-      "start_time": 26.65687365863296,
-      "speaker_id": "8842"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000062.json b/conversations/conv_000062.json
deleted file mode 100644
index 33d15c6efca74f28e63185c599b1eaa6324881ca..0000000000000000000000000000000000000000
--- a/conversations/conv_000062.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.5035371518035565,
-      "duration": 3.5035371518035565,
-      "start_frame": 0,
-      "duration_frames": 56056,
-      "overlap": false,
-      "utterance_id": "1272-141231",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 3.721871477454785,
-      "end_time": 8.388706534555906,
-      "duration": 4.666835057101121,
-      "start_frame": 59549,
-      "duration_frames": 74669,
-      "overlap": true,
-      "utterance_id": "8842-304647",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-304647.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 9.019598247876367,
-      "end_time": 14.099909193799618,
-      "duration": 5.080310945923252,
-      "start_frame": 144313,
-      "duration_frames": 81284,
-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 14.988553019100173,
-      "end_time": 19.725196677385302,
-      "duration": 4.7366436582851295,
-      "start_frame": 239816,
-      "duration_frames": 75786,
-      "overlap": false,
-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 20.5084624593054,
-      "end_time": 26.00518222308695,
-      "duration": 5.4967197637815515,
-      "start_frame": 328135,
-      "duration_frames": 87947,
-      "overlap": false,
-      "utterance_id": "8842-302203",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302203.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 25.561122057597213,
-      "end_time": 29.79737040270977,
-      "duration": 4.236248345112557,
-      "start_frame": 408977,
-      "duration_frames": 67779,
-      "overlap": true,
-      "utterance_id": "1272-141231",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 56056
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 30.935800803741092,
-      "end_time": 32.0,
-      "duration": 1.0641991962589081,
-      "start_frame": 494972,
-      "duration_frames": 17027,
-      "overlap": false,
-      "utterance_id": "1272-135031",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-135031.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/220018.wav",
-      "duration": 0.4758730158730159,
-      "start_time": 14.565386915336733
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-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/417229.wav",
-      "duration": 4.612111493971247,
-      "start_time": 26.879060563192294
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1272/laugh/0019.wav",
-      "duration": 1.56,
-      "start_time": 0.6802513522640439,
-      "speaker_id": "1272"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/laugh/0000.wav",
-      "duration": 1.64,
-      "start_time": 6.0679162428422835,
-      "speaker_id": "8842"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/cough/0049.wav",
-      "duration": 0.8333291492057984,
-      "start_time": 19.65463404426176,
-      "speaker_id": "8842"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1272/cough/0015.wav",
-      "duration": 0.4713427640014616,
-      "start_time": 24.899438812317644,
-      "speaker_id": "1272"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000063.json b/conversations/conv_000063.json
deleted file mode 100644
index c250426db353889b981df9f7c8533f9de1e7866d..0000000000000000000000000000000000000000
--- a/conversations/conv_000063.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 4.0164684208078345,
-      "duration": 4.0164684208078345,
-      "start_frame": 0,
-      "duration_frames": 64263,
-      "overlap": false,
-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 4.422183922865167,
-      "end_time": 8.980500286483116,
-      "duration": 4.558316363617949,
-      "start_frame": 70754,
-      "duration_frames": 72933,
-      "overlap": false,
-      "utterance_id": "2803-154320",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154320.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 10.061602504533589,
-      "end_time": 13.633722294189763,
-      "duration": 3.572119789656174,
-      "start_frame": 160985,
-      "duration_frames": 57153,
-      "overlap": false,
-      "utterance_id": "6241-61946",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 14.685110145174365,
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-      "start_frame": 234961,
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-      "utterance_id": "2803-154320",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154320.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 72933
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 19.988260218718338,
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-      "overlap": false,
-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
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-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
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-      "duration_frames": 81664,
-      "overlap": false,
-      "utterance_id": "2803-154320",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154320.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 155712
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 29.29620414388718,
-      "end_time": 32.0,
-      "duration": 2.7037958561128193,
-      "start_frame": 468739,
-      "duration_frames": 43260,
-      "overlap": false,
-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/353124.wav",
-      "duration": 22.642448568980463,
-      "start_time": 4.713580515979597
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/59513_5.wav",
-      "duration": 0.2931972789115646,
-      "start_time": 28.923185502281044
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-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/47000.wav",
-      "duration": 1.837393597536395,
-      "start_time": 21.659820078892565
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2803/laugh/0006.wav",
-      "duration": 0.7605074554315098,
-      "start_time": 4.527918915363492,
-      "speaker_id": "2803"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6313/laugh/0077.wav",
-      "duration": 1.140185558290879,
-      "start_time": 18.629894119291727,
-      "speaker_id": "6313"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2803/laugh/0016.wav",
-      "duration": 0.916836688981634,
-      "start_time": 29.318417957071777,
-      "speaker_id": "2803"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000064.json b/conversations/conv_000064.json
deleted file mode 100644
index 0167e8f890cac13c38a7c86b0a94fbf6e34463e1..0000000000000000000000000000000000000000
--- a/conversations/conv_000064.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 4.926552453712325,
-      "duration": 4.926552453712325,
-      "start_frame": 0,
-      "duration_frames": 78824,
-      "overlap": false,
-      "utterance_id": "2803-154328",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 5.577023474225818,
-      "end_time": 9.926005755375305,
-      "duration": 4.348982281149487,
-      "start_frame": 89232,
-      "duration_frames": 69583,
-      "overlap": false,
-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 10.434281158521951,
-      "end_time": 14.512198972624091,
-      "duration": 4.077917814102139,
-      "start_frame": 166948,
-      "duration_frames": 65246,
-      "overlap": false,
-      "utterance_id": "174-168635",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-168635.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 14.768860855043041,
-      "end_time": 20.172394258935586,
-      "duration": 5.403533403892546,
-      "start_frame": 236301,
-      "duration_frames": 86456,
-      "overlap": false,
-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 69583
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 20.039342696487612,
-      "end_time": 26.439470420925044,
-      "duration": 6.400127724437432,
-      "start_frame": 320629,
-      "duration_frames": 102402,
-      "overlap": true,
-      "utterance_id": "2803-154328",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 78824
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 28.24480056327916,
-      "end_time": 32.0,
-      "duration": 3.75519943672084,
-      "start_frame": 451916,
-      "duration_frames": 60083,
-      "overlap": false,
-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 156039
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/235566.wav",
-      "duration": 19.73502096704631,
-      "start_time": 10.449385031583605
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/271399_1.wav",
-      "duration": 2.154739229024943,
-      "start_time": 6.556470557325659
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-  ],
-  "paralinguistic_events": []
-}
\ No newline at end of file
diff --git a/conversations/conv_000065.json b/conversations/conv_000065.json
deleted file mode 100644
index 1cd39b5c0475c18baeebccbb643f7dbf403e78e4..0000000000000000000000000000000000000000
--- a/conversations/conv_000065.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.957210075252583,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 4.508542813897642,
-      "duration": 4.508542813897642,
-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "7850-111771",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-111771.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.024316426389289,
-      "end_time": 8.256798588083917,
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-      "overlap": true,
-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 9.212968079032526,
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-      "duration": 6.439036039256746,
-      "start_frame": 147407,
-      "duration_frames": 103024,
-      "overlap": false,
-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.096794808109365,
-      "end_time": 21.24972125921887,
-      "duration": 5.152926451109504,
-      "start_frame": 257548,
-      "duration_frames": 82446,
-      "overlap": false,
-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 21.92504274112621,
-      "end_time": 25.009759076464587,
-      "duration": 3.0847163353383786,
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-      "duration_frames": 49355,
-      "overlap": false,
-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 103024
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 25.88916249377,
-      "end_time": 31.957210075252583,
-      "duration": 6.068047581482581,
-      "start_frame": 414226,
-      "duration_frames": 97088,
-      "overlap": false,
-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 82446
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/233645_8.wav",
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-    {
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7850/cough/0034.wav",
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-      "event_class": "cough",
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-      "duration": 1.12,
-      "start_time": 15.72929663115486,
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-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6319/laugh/0019.wav",
-      "duration": 0.7541336031398704,
-      "start_time": 21.147545441258952,
-      "speaker_id": "6319"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000066.json b/conversations/conv_000066.json
deleted file mode 100644
index ad44b2cbb0700a74a78893edeb8b478f17069f6a..0000000000000000000000000000000000000000
--- a/conversations/conv_000066.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.69674790013675,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
-    {
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.3968478938015405,
-      "duration": 5.3968478938015405,
-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.558224707552283,
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-      "duration_frames": 84297,
-      "overlap": true,
-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 11.741390147385971,
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-      "duration": 5.834033145263437,
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-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 17.83890937712865,
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 86349
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 24.240438226192687,
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-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 29.969670344671915,
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-      "duration_frames": 27633,
-      "overlap": true,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 176804
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-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/87621.wav",
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-  "foreground_events": [
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-      "event_class": "Blender",
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-      "event_class": "Electric_shaver_toothbrush",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6313/laugh/0025.wav",
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-      "start_time": 10.530857999132012,
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1919/cough/0012.wav",
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-      "start_time": 23.107105738579097,
-      "speaker_id": "1919"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000067.json b/conversations/conv_000067.json
deleted file mode 100644
index f789761bc6239921b489524dc39a9999110c408e..0000000000000000000000000000000000000000
--- a/conversations/conv_000067.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2,
-  "segments": [
-    {
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 6.9441251736191525,
-      "duration": 6.9441251736191525,
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-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 7.257348263317624,
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-      "utterance_id": "5536-43358",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
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-    {
-      "segment_id": "seg0002",
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-      "start_time": 13.028168550696034,
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-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
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-    {
-      "segment_id": "seg0003",
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-      "utterance_id": "2902-9008",
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-    {
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-  "background_events": [
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-  "foreground_events": [
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-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/87621.wav",
-      "duration": 2.666544149655002,
-      "start_time": 4.7222297194944876
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-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/352270.wav",
-      "duration": 3.2526575538158196,
-      "start_time": 5.1135713943638885
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5536/laugh/0043.wav",
-      "duration": 0.6698651774597297,
-      "start_time": 11.330136947705748,
-      "speaker_id": "5536"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2902/laugh/0032.wav",
-      "duration": 1.5,
-      "start_time": 18.292724969066747,
-      "speaker_id": "2902"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6319/cough/0028.wav",
-      "duration": 1.455469961013645,
-      "start_time": 25.67859822431585,
-      "speaker_id": "6319"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000068.json b/conversations/conv_000068.json
deleted file mode 100644
index 78927e907bbf8b24a8b760b7299eb60a2ccfae55..0000000000000000000000000000000000000000
--- a/conversations/conv_000068.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.714759002227108,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 4.781664952195425,
-      "duration": 4.781664952195425,
-      "start_frame": 0,
-      "duration_frames": 76506,
-      "overlap": false,
-      "utterance_id": "1993-147966",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147966.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.013972449311754,
-      "end_time": 8.92744404496572,
-      "duration": 4.913471595653966,
-      "start_frame": 64223,
-      "duration_frames": 78615,
-      "overlap": true,
-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 11.295079952947969,
-      "end_time": 14.940549078981093,
-      "duration": 3.6454691260331247,
-      "start_frame": 180721,
-      "duration_frames": 58327,
-      "overlap": false,
-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 15.940361368441785,
-      "end_time": 21.572121208314705,
-      "duration": 5.631759839872921,
-      "start_frame": 255045,
-      "duration_frames": 90108,
-      "overlap": false,
-      "utterance_id": "7850-286674",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-286674.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.174976594637943,
-      "end_time": 28.18839153689253,
-      "duration": 6.013414942254587,
-      "start_frame": 354799,
-      "duration_frames": 96214,
-      "overlap": false,
-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 58327
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 28.48077256567314,
-      "end_time": 31.714759002227108,
-      "duration": 3.2339864365539697,
-      "start_frame": 455692,
-      "duration_frames": 51743,
-      "overlap": true,
-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 78615
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/235566.wav",
-      "duration": 26.222091326106362,
-      "start_time": 2.9906424387371024
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/72558_2.wav",
-      "duration": 0.3128344671201814,
-      "start_time": 2.8204662036875807
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-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/121891_2.wav",
-      "duration": 0.6236734693877551,
-      "start_time": 29.34184072479005
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7850/laugh/0018.wav",
-      "duration": 0.7390923271571033,
-      "start_time": 3.0974746109386877,
-      "speaker_id": "7850"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000069.json b/conversations/conv_000069.json
deleted file mode 100644
index 42f267943fee7e649f506def03d175a045ee7943..0000000000000000000000000000000000000000
--- a/conversations/conv_000069.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.606730974480848,
-      "duration": 3.606730974480848,
-      "start_frame": 0,
-      "duration_frames": 57707,
-      "overlap": false,
-      "utterance_id": "1462-170145",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 3.7532468001221218,
-      "end_time": 9.098991731939693,
-      "duration": 5.3457449318175705,
-      "start_frame": 60051,
-      "duration_frames": 85531,
-      "overlap": false,
-      "utterance_id": "1993-147149",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147149.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 10.164837579196135,
-      "end_time": 14.312429900082824,
-      "duration": 4.147592320886689,
-      "start_frame": 162637,
-      "duration_frames": 66361,
-      "overlap": false,
-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 15.081161755176275,
-      "end_time": 18.82899898623619,
-      "duration": 3.7478372310599157,
-      "start_frame": 241298,
-      "duration_frames": 59965,
-      "overlap": false,
-      "utterance_id": "1462-170138",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170138.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 19.143081304668875,
-      "end_time": 22.26858163274428,
-      "duration": 3.1255003280754052,
-      "start_frame": 306289,
-      "duration_frames": 50008,
-      "overlap": false,
-      "utterance_id": "1993-147966",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147966.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 22.732337008651776,
-      "end_time": 27.83248019668336,
-      "duration": 5.100143188031584,
-      "start_frame": 363717,
-      "duration_frames": 81602,
-      "overlap": false,
-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 66361
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 28.014301302336563,
-      "end_time": 32.0,
-      "duration": 3.9856986976634374,
-      "start_frame": 448228,
-      "duration_frames": 63771,
-      "overlap": false,
-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 147963
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/417229.wav",
-      "duration": 12.30750566893424,
-      "start_time": 8.410909429840364
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/588_1.wav",
-      "duration": 4.790494634082668,
-      "start_time": 1.3427772182306632
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/laugh/0019.wav",
-      "duration": 1.14,
-      "start_time": 13.676491230870045,
-      "speaker_id": "1462"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/cough/0078.wav",
-      "duration": 1.28,
-      "start_time": 13.65061632761108,
-      "speaker_id": "1462"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1272/laugh/0025.wav",
-      "duration": 1.46,
-      "start_time": 27.994709886073522,
-      "speaker_id": "1272"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000070.json b/conversations/conv_000070.json
deleted file mode 100644
index 45db8e24b3089c1d2d2656bccb348deff40d0c64..0000000000000000000000000000000000000000
--- a/conversations/conv_000070.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 5.793162017538329,
-      "duration": 5.793162017538329,
-      "start_frame": 0,
-      "duration_frames": 92690,
-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 6.246412766191844,
-      "end_time": 9.433526979828331,
-      "duration": 3.187114213636487,
-      "start_frame": 99942,
-      "duration_frames": 50993,
-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 10.105871947434345,
-      "end_time": 13.192347957440747,
-      "duration": 3.0864760100064026,
-      "start_frame": 161693,
-      "duration_frames": 49383,
-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 50993
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 14.332136333486263,
-      "end_time": 19.58024182393582,
-      "duration": 5.248105490449556,
-      "start_frame": 229314,
-      "duration_frames": 83969,
-      "overlap": false,
-      "utterance_id": "2277-149874",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 20.198466064650518,
-      "end_time": 25.631999140558623,
-      "duration": 5.433533075908104,
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-      "duration_frames": 86936,
-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 100376
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 26.04115673744625,
-      "end_time": 30.82852040640494,
-      "duration": 4.787363668958692,
-      "start_frame": 416658,
-      "duration_frames": 76597,
-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 92690
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 31.227690020040953,
-      "end_time": 32.0,
-      "duration": 0.7723099799590472,
-      "start_frame": 499643,
-      "duration_frames": 12356,
-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 187312
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/340831.wav",
-      "duration": 4.451856185901901,
-      "start_time": 16.275880689273635
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-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/18282.wav",
-      "duration": 0.6348979591836734,
-      "start_time": 4.723927911458701
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3081/cough/0000.wav",
-      "duration": 0.46259342271461373,
-      "start_time": 9.599412753915127,
-      "speaker_id": "3081"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2277/laugh/0052.wav",
-      "duration": 0.6796201827507978,
-      "start_time": 13.515978881425635,
-      "speaker_id": "2277"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1919/laugh/0061.wav",
-      "duration": 1.1548725826127366,
-      "start_time": 24.846979769238374,
-      "speaker_id": "1919"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3081/laugh/0055.wav",
-      "duration": 0.8634399938006998,
-      "start_time": 31.1365600061993,
-      "speaker_id": "3081"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000071.json b/conversations/conv_000071.json
deleted file mode 100644
index b1a47661276512a4d32abb836ef8be6523f23b6b..0000000000000000000000000000000000000000
--- a/conversations/conv_000071.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.777446927642224,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.939807545005413,
-      "duration": 5.939807545005413,
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-      "overlap": false,
-      "utterance_id": "8297-275156",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275156.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.172550325674306,
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-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 12.298762233134767,
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-      "duration": 4.4271809834064655,
-      "start_frame": 196780,
-      "duration_frames": 70834,
-      "overlap": false,
-      "utterance_id": "8297-275156",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275156.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 95036
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-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "real_speaker_id": "1919",
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-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
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-  "background_events": [],
-  "foreground_events": [
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/54062.wav",
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-  "paralinguistic_events": [
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-      "speaker_id": "8297"
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-      "duration": 1.28,
-      "start_time": 30.72,
-      "speaker_id": "6319"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000072.json b/conversations/conv_000072.json
deleted file mode 100644
index 01dd396e95e5566afbac02d461dfa34fe2c05c15..0000000000000000000000000000000000000000
--- a/conversations/conv_000072.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "speaker_id": 0,
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-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.6373321973518475,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
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-      "speaker_id": 1,
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-      "utterance_id": "6241-61943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 61675
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-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 23.28907164492468,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 91674
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-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 29.48087301578584,
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-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 129229
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/371615_1.wav",
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-      "speaker_id": "2412"
-    }
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-}
\ No newline at end of file
diff --git a/conversations/conv_000073.json b/conversations/conv_000073.json
deleted file mode 100644
index 1dfb077f5bc9ce327f730b4042ccba2baa87cf1d..0000000000000000000000000000000000000000
--- a/conversations/conv_000073.json
+++ /dev/null
@@ -1,108 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "8297-275154",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275154.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
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-      "segment_id": "seg0001",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275156.flac |",
-      "real_speaker_id": "8297",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275155.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
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-      "utterance_id": "8297-275155",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275155.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 93904
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/352266.wav",
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-      "event_class": "Cat",
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-  "paralinguistic_events": []
-}
\ No newline at end of file
diff --git a/conversations/conv_000074.json b/conversations/conv_000074.json
deleted file mode 100644
index 1ba07d63e415c71a590bdddfcf221ce75ab8407b..0000000000000000000000000000000000000000
--- a/conversations/conv_000074.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.32928099840372,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24615.flac |",
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-      "utterance_id": "2803-161169",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-161169.flac |",
-      "real_speaker_id": "2803",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24615.flac |",
-      "real_speaker_id": "5338",
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-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
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-      "duration_frames": 59770,
-      "overlap": false,
-      "utterance_id": "2803-161169",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-161169.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 71335
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
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-  "paralinguistic_events": [
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-      "speaker_id": "652"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5338/laugh/0002.wav",
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-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5338/cough/0044.wav",
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-      "speaker_id": "5338"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/laugh/0054.wav",
-      "duration": 1.4,
-      "start_time": 25.021058938804945,
-      "speaker_id": "652"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2803/laugh/0049.wav",
-      "duration": 0.6744105204393209,
-      "start_time": 26.651445426037622,
-      "speaker_id": "2803"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000075.json b/conversations/conv_000075.json
deleted file mode 100644
index 804f72ab4306317c7343f9c32eb382e8e556c809..0000000000000000000000000000000000000000
--- a/conversations/conv_000075.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
-    {
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.631132210621658,
-      "duration": 3.631132210621658,
-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 4.128651534048427,
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-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 78159
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-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/239565.wav",
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-      "speaker_id": "3000"
-    }
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-}
\ No newline at end of file
diff --git a/conversations/conv_000076.json b/conversations/conv_000076.json
deleted file mode 100644
index 39001e011f373d5e533873653485c3f9cfee66b2..0000000000000000000000000000000000000000
--- a/conversations/conv_000076.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
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-      "start_time": 0.0,
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
-    },
-    {
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-      "start_time": 6.61837793069769,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
-      "real_speaker_id": "2277",
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 92582
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-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
-      "real_speaker_id": "2277",
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 23.599954636975507,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
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-      "segment_id": "seg0005",
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-      "start_time": 29.351009626968132,
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-      "utterance_id": "6295-64301",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 0
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-  ],
-  "background_events": [
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-      "event_class": "Vacuum_cleaner",
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-  "foreground_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000077.json b/conversations/conv_000077.json
deleted file mode 100644
index ad32f5e521f1fc363083a9e103bd0b43d322261d..0000000000000000000000000000000000000000
--- a/conversations/conv_000077.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
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-      "position_frames": 0
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-      "real_speaker_id": "5536",
-      "position_frames": 78913
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-      "utterance_id": "2412-153954",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000078.json b/conversations/conv_000078.json
deleted file mode 100644
index 019369ce8efab410c0841b10843bd4ec05e37d7f..0000000000000000000000000000000000000000
--- a/conversations/conv_000078.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.735240238382115,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
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-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
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-    {
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-  "foreground_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000079.json b/conversations/conv_000079.json
deleted file mode 100644
index cf03e500112eb2d878a9547472a89c713d595266..0000000000000000000000000000000000000000
--- a/conversations/conv_000079.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "6345-64257",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-64257.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
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-    {
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-      "speaker_id": 2,
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-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
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-    {
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-      "start_time": 11.180401735966178,
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-      "utterance_id": "3752-4943",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
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-      "real_speaker_id": "1919",
-      "position_frames": 57465
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-      "segment_id": "seg0005",
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-      "start_time": 29.291756052068934,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93306.flac |",
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-  "background_events": [],
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-      "speaker_id": "1919"
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6345/laugh/0000.wav",
-      "duration": 1.2,
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-      "event_class": "cough",
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-      "speaker_id": "6345"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000080.json b/conversations/conv_000080.json
deleted file mode 100644
index 4d1ee6ddf52693797d0cda3f9929fe77312e8242..0000000000000000000000000000000000000000
--- a/conversations/conv_000080.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 30.99946106738259,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "overlap": false,
-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0001",
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-      "start_time": 5.0984456331407095,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
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-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 14.917040918091717,
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-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 78796
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 20.302979606582007,
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-      "overlap": false,
-      "utterance_id": "3536-8226",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 24.482433355500987,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 50547
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-      "event_class": "Frying",
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-  "paralinguistic_events": [
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-      "speaker_id": "1272"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000081.json b/conversations/conv_000081.json
deleted file mode 100644
index 2a32094fdacbced8c2217e52fa53c856fb56d33d..0000000000000000000000000000000000000000
--- a/conversations/conv_000081.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.7319873321509,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
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-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-286674.flac |",
-      "real_speaker_id": "7850",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
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-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
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-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0005",
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-      "start_frame": 451105,
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-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 89931
-    }
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-  "background_events": [
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-      "event_class": "Blender",
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-      "event_class": "Vacuum_cleaner",
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-    {
-      "event_class": "laugh",
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-      "duration": 1.4,
-      "start_time": 30.6,
-      "speaker_id": "422"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000082.json b/conversations/conv_000082.json
deleted file mode 100644
index abb8c7615c20d079634392a722082c3add926896..0000000000000000000000000000000000000000
--- a/conversations/conv_000082.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 3,
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-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
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-      "utterance_id": "3536-8226",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
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-      "utterance_id": "5895-34615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
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-      "position_frames": 0
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-      "segment_id": "seg0003",
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-      "segment_id": "seg0004",
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-      "utterance_id": "84-121123",
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-      "real_speaker_id": "84",
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-      "segment_id": "seg0005",
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-      "real_speaker_id": "84",
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-  "paralinguistic_events": [
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-    {
-      "event_class": "laugh",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000083.json b/conversations/conv_000083.json
deleted file mode 100644
index cbeebdbd425b43d53e223bd48787b1c1d80c7c07..0000000000000000000000000000000000000000
--- a/conversations/conv_000083.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 6.862340046105636,
-      "duration": 6.862340046105636,
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-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
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-      "real_speaker_id": "6313",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
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-      "segment_id": "seg0005",
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-      "speaker_id": "6319"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000084.json b/conversations/conv_000084.json
deleted file mode 100644
index b840fce9263c1e49db5b9f457ffd0c335c28c8de..0000000000000000000000000000000000000000
--- a/conversations/conv_000084.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
-      "real_speaker_id": "6295",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
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-      "real_speaker_id": "6295",
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-      "segment_id": "seg0005",
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-      "utterance_id": "6241-66616",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
-      "real_speaker_id": "6241",
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-  "background_events": [],
-  "foreground_events": [
-    {
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\ No newline at end of file
diff --git a/conversations/conv_000085.json b/conversations/conv_000085.json
deleted file mode 100644
index 1261d328711fcca8954daba3f0febfb81be78cc6..0000000000000000000000000000000000000000
--- a/conversations/conv_000085.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-50561.flac |",
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-      "speaker_id": "1462"
-    }
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-}
\ No newline at end of file
diff --git a/conversations/conv_000086.json b/conversations/conv_000086.json
deleted file mode 100644
index 3fd23b95f296746768e77f7128de919f119362d9..0000000000000000000000000000000000000000
--- a/conversations/conv_000086.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
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-  "background_events": [],
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-}
\ No newline at end of file
diff --git a/conversations/conv_000087.json b/conversations/conv_000087.json
deleted file mode 100644
index a27a9d360d23b0173b243226b923a226be88de80..0000000000000000000000000000000000000000
--- a/conversations/conv_000087.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 30.647531271763338,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
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-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
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-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.34575498283735,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 122620
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/121891_2.wav",
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-      "event_class": "cough",
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-      "speaker_id": "3576"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000088.json b/conversations/conv_000088.json
deleted file mode 100644
index 1390240c72dfe5f2e0e08c4e8e243cc62bb7a1ce..0000000000000000000000000000000000000000
--- a/conversations/conv_000088.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "start_time": 0.0,
-      "end_time": 4.089107878870873,
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-      "utterance_id": "652-130726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130726.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
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-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 185828
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-  ],
-  "background_events": [
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-      "event_class": "Electric_shaver_toothbrush",
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-  "paralinguistic_events": [
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-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000089.json b/conversations/conv_000089.json
deleted file mode 100644
index 5157ffd2d2830fdb6eff1cc7ae28c8a297f7bc7a..0000000000000000000000000000000000000000
--- a/conversations/conv_000089.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
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-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
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-      "position_frames": 0
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-      "speaker_id": 1,
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-      "utterance_id": "7976-110124",
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-      "real_speaker_id": "7976",
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 90376
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-  ],
-  "background_events": [
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-    {
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-      "duration": 1.52,
-      "start_time": 26.899184301034175,
-      "speaker_id": "2803"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000090.json b/conversations/conv_000090.json
deleted file mode 100644
index b0670190c6dbfda049a02623087347042091fe2c..0000000000000000000000000000000000000000
--- a/conversations/conv_000090.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.155988095905546,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "2803-154328",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
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-      "position_frames": 0
-    },
-    {
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-      "start_time": 5.943642819790626,
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-      "utterance_id": "652-129742",
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5536/laugh/0000.wav",
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-      "speaker_id": "652"
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-      "event_class": "cough",
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-      "duration": 1.142336640143768,
-      "start_time": 25.827650114111144,
-      "speaker_id": "652"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000091.json b/conversations/conv_000091.json
deleted file mode 100644
index 151c64934d52e2f88886ddb93256986483b36892..0000000000000000000000000000000000000000
--- a/conversations/conv_000091.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
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-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
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-      "speaker_id": 0,
-      "start_time": 6.50164211029014,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-284437.flac |",
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-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
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-      "speaker_id": 2,
-      "start_time": 17.80787713375281,
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-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 23.50464557351599,
-      "end_time": 29.369680793692176,
-      "duration": 5.8650352201761855,
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-      "utterance_id": "5338-24640",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 30.40379532597193,
-      "end_time": 32.0,
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-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 78183
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366511.wav",
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-    {
-      "event_class": "laugh",
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/laugh/0051.wav",
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-      "start_time": 20.850767599725547,
-      "speaker_id": "3853"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000092.json b/conversations/conv_000092.json
deleted file mode 100644
index 0280f96e6cb5f36216eec7fef7439287f96326e2..0000000000000000000000000000000000000000
--- a/conversations/conv_000092.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.864099026548004,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
-    {
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-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 4.42532369429901,
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-      "start_frame": 0,
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-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147149.flac |",
-      "real_speaker_id": "1993",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
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-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "overlap": false,
-      "utterance_id": "1993-147964",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
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-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
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-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 25.77947897633331,
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-      "utterance_id": "5338-284437",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-284437.flac |",
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-      "position_frames": 0
-    }
-  ],
-  "background_events": [
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-  "foreground_events": [
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-  "paralinguistic_events": [
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-      "speaker_id": "1993"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000093.json b/conversations/conv_000093.json
deleted file mode 100644
index 86ccc2106687fa21f9e5cd43def291f3f0587ec2..0000000000000000000000000000000000000000
--- a/conversations/conv_000093.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
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-    {
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-      "utterance_id": "8842-302203",
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\ No newline at end of file
diff --git a/conversations/conv_000094.json b/conversations/conv_000094.json
deleted file mode 100644
index 1759c24695438c86edd238fd3a0a540e822fe9de..0000000000000000000000000000000000000000
--- a/conversations/conv_000094.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.532098260861645,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
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-    {
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-      "start_time": 24.91809117343562
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3081/laugh/0071.wav",
-      "duration": 1.3720498358068622,
-      "start_time": 0.3802466390104155,
-      "speaker_id": "3081"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3081/cough/0020.wav",
-      "duration": 1.2335813111861451,
-      "start_time": 3.4676659735696242,
-      "speaker_id": "3081"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/laugh/0035.wav",
-      "duration": 1.5,
-      "start_time": 10.682842065647684,
-      "speaker_id": "2412"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/laugh/0013.wav",
-      "duration": 1.008696223227054,
-      "start_time": 18.908850932244807,
-      "speaker_id": "2412"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/laugh/0051.wav",
-      "duration": 1.4506514896977438,
-      "start_time": 25.858486229396917,
-      "speaker_id": "2086"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/cough/0006.wav",
-      "duration": 0.8860018956052016,
-      "start_time": 24.800578355955633,
-      "speaker_id": "2086"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000095.json b/conversations/conv_000095.json
deleted file mode 100644
index 9e8cd7cf392d924eaf87575d5418bfdc7db37dbe..0000000000000000000000000000000000000000
--- a/conversations/conv_000095.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.411379407833178,
-      "duration": 5.411379407833178,
-      "start_frame": 0,
-      "duration_frames": 86582,
-      "overlap": false,
-      "utterance_id": "5338-24640",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.127285212964515,
-      "end_time": 11.430860268862558,
-      "duration": 5.303575055898043,
-      "start_frame": 98036,
-      "duration_frames": 84857,
-      "overlap": false,
-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 11.264372871941761,
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-      "duration": 4.8774339617876326,
-      "start_frame": 180229,
-      "duration_frames": 78038,
-      "overlap": true,
-      "utterance_id": "1993-147149",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147149.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 16.92485786279507,
-      "end_time": 23.135749447298533,
-      "duration": 6.210891584503464,
-      "start_frame": 270797,
-      "duration_frames": 99374,
-      "overlap": false,
-      "utterance_id": "5338-24615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24615.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 23.64903607250379,
-      "end_time": 29.81337882958995,
-      "duration": 6.164342757086159,
-      "start_frame": 378384,
-      "duration_frames": 98629,
-      "overlap": false,
-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 84857
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 30.119805451609455,
-      "end_time": 32.0,
-      "duration": 1.880194548390545,
-      "start_frame": 481916,
-      "duration_frames": 30083,
-      "overlap": false,
-      "utterance_id": "1993-147149",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147149.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 78038
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/59513_6.wav",
-      "duration": 0.5768027210884353,
-      "start_time": 6.504171433205322
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-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/99181_1.wav",
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-      "start_time": 17.64003913113971
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-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5338/cough/0021.wav",
-      "duration": 0.4271470936128572,
-      "start_time": 0,
-      "speaker_id": "5338"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5338/laugh/0006.wav",
-      "duration": 1.1489019889353909,
-      "start_time": 15.666958531188975,
-      "speaker_id": "5338"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1673/laugh/0006.wav",
-      "duration": 0.7539977861104123,
-      "start_time": 26.7429328028771,
-      "speaker_id": "1673"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1993/laugh/0032.wav",
-      "duration": 1.26,
-      "start_time": 30.57627941099039,
-      "speaker_id": "1993"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000096.json b/conversations/conv_000096.json
deleted file mode 100644
index ec20d3647b8d2fd0148ed84814a9e7bebbb2329a..0000000000000000000000000000000000000000
--- a/conversations/conv_000096.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.68349700917964,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 3.9989999281752793,
-      "duration": 3.9989999281752793,
-      "start_frame": 0,
-      "duration_frames": 63983,
-      "overlap": false,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 4.5811822029898,
-      "end_time": 8.417772296086213,
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-      "overlap": false,
-      "utterance_id": "5536-43359",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 8.59702742535098,
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-      "duration": 5.091629258897469,
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-      "duration_frames": 81466,
-      "overlap": false,
-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 14.901818924274506,
-      "end_time": 19.530808343736773,
-      "duration": 4.628989419462265,
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-      "duration_frames": 74063,
-      "overlap": false,
-      "utterance_id": "5536-43358",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 20.27519408143543,
-      "end_time": 25.50559278431668,
-      "duration": 5.230398702881249,
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-      "duration_frames": 83686,
-      "overlap": false,
-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 26.4119676737421,
-      "end_time": 30.806898054789077,
-      "duration": 4.394930381046976,
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-      "duration_frames": 70318,
-      "overlap": false,
-      "utterance_id": "5536-43359",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 61385
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 31.139082759444733,
-      "end_time": 31.68349700917964,
-      "duration": 0.5444142497349063,
-      "start_frame": 498225,
-      "duration_frames": 8710,
-      "overlap": true,
-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 81466
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/366069.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5536/laugh/0024.wav",
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-      "speaker_id": "5536"
-    },
-    {
-      "event_class": "cough",
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-      "start_time": 3.7298169047157534,
-      "speaker_id": "5536"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5536/laugh/0036.wav",
-      "duration": 1.12,
-      "start_time": 13.713465967851556,
-      "speaker_id": "5536"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5536/laugh/0020.wav",
-      "duration": 0.808052277034978,
-      "start_time": 31.064654766405546,
-      "speaker_id": "5536"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000097.json b/conversations/conv_000097.json
deleted file mode 100644
index f3261f31467899b1ba7248b65e8a76e7c9d09dec..0000000000000000000000000000000000000000
--- a/conversations/conv_000097.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 31.84224482913432,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 4.223955516286651,
-      "duration": 4.223955516286651,
-      "start_frame": 0,
-      "duration_frames": 67583,
-      "overlap": false,
-      "utterance_id": "5338-24640",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 4.908684706621215,
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-      "duration_frames": 98812,
-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
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-      "speaker_id": 2,
-      "start_time": 11.355676060854343,
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-      "utterance_id": "5338-24615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24615.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 18.386187843803796,
-      "end_time": 24.0987735653376,
-      "duration": 5.712585721533803,
-      "start_frame": 294179,
-      "duration_frames": 91401,
-      "overlap": false,
-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 24.945259468600508,
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 98812
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/233645_7.wav",
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-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/2503.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5338/cough/0007.wav",
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-      "start_time": 0,
-      "speaker_id": "5338"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/laugh/0017.wav",
-      "duration": 1.28,
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-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2428/laugh/0052.wav",
-      "duration": 1.24,
-      "start_time": 24.29671981814562,
-      "speaker_id": "2428"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000098.json b/conversations/conv_000098.json
deleted file mode 100644
index f0050efc0b4f2a20dc842b22056dadbbfa66cbfa..0000000000000000000000000000000000000000
--- a/conversations/conv_000098.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.43394492186082,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 3.4779786896490155,
-      "duration": 3.4779786896490155,
-      "start_frame": 0,
-      "duration_frames": 55647,
-      "overlap": false,
-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 4.0021750877336455,
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-      "utterance_id": "8842-302196",
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-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
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-      "start_time": 9.549439445358153,
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-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "real_speaker_id": "8842",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
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-      "position_frames": 53340
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-      "event_class": "Blender",
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/laugh/0042.wav",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000099.json b/conversations/conv_000099.json
deleted file mode 100644
index 91d0e2aef347b8b6d9eea6de4d29621f8c73af4d..0000000000000000000000000000000000000000
--- a/conversations/conv_000099.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
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-      "utterance_id": "7850-73752",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-73752.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 4.567683333455488,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
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-      "position_frames": 0
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-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "utterance_id": "7850-111771",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-111771.flac |",
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-      "position_frames": 0
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
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-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "utterance_id": "6295-64301",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 0
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-  ],
-  "background_events": [
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-      "speaker_id": "7850"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000100.json b/conversations/conv_000100.json
deleted file mode 100644
index b275d47ce1163d142444379c1cf1f4b42964d1bc..0000000000000000000000000000000000000000
--- a/conversations/conv_000100.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.31487217860496,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
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-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
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-      "segment_id": "seg0004",
-      "speaker_id": 0,
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-      "real_speaker_id": "5694",
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-      "speaker_id": "1988"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000101.json b/conversations/conv_000101.json
deleted file mode 100644
index ebe9b3f8d82a28a30ea471b5ca09e8398307f769..0000000000000000000000000000000000000000
--- a/conversations/conv_000101.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.27413216228861,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
-    },
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "real_speaker_id": "251",
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-      "real_speaker_id": "777",
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-      "segment_id": "seg0004",
-      "speaker_id": 2,
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-      "duration_frames": 93568,
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
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-  "background_events": [
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-      "event_class": "Frying",
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-  "paralinguistic_events": [
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\ No newline at end of file
diff --git a/conversations/conv_000102.json b/conversations/conv_000102.json
deleted file mode 100644
index b15a59d1c7b53d153890999d75064ee278c98b44..0000000000000000000000000000000000000000
--- a/conversations/conv_000102.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "speaker_id": 2,
-      "start_time": 0.0,
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-      "utterance_id": "5895-34615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 6.8586598486623895,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
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-      "utterance_id": "1919-142785",
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-      "utterance_id": "5895-34622",
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-      "position_frames": 0
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-      "segment_id": "seg0004",
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-      "position_frames": 0
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 82191
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-  ],
-  "background_events": [
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-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/59326.wav",
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-  "foreground_events": [
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-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/379144_0.wav",
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-      "event_class": "Blender",
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-      "event_class": "laugh",
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-      "duration": 1.1069088244202945,
-      "start_time": 22.14494326719945,
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-      "speaker_id": "7850"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000103.json b/conversations/conv_000103.json
deleted file mode 100644
index 147ffd0661871eea5c0f8989f344750aab67908d..0000000000000000000000000000000000000000
--- a/conversations/conv_000103.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 31.333749115862204,
-  "num_speakers": 3,
-  "overlap_rate": 0.4,
-  "segments": [
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-      "start_time": 0.0,
-      "end_time": 6.526572574585533,
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-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 7.000447177009691,
-      "end_time": 11.558648519268973,
-      "duration": 4.558201342259282,
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-      "duration_frames": 72931,
-      "overlap": true,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 11.573316610862836,
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-      "duration_frames": 85347,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 72931
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 18.284487587343158,
-      "end_time": 24.002854977297382,
-      "duration": 5.718367389954223,
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-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 104425
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 24.345613842321562,
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-      "overlap": false,
-      "utterance_id": "2412-153954",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/329896_6.wav",
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-    {
-      "event_class": "Vacuum_cleaner",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/laugh/0024.wav",
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-      "start_time": 0,
-      "speaker_id": "422"
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-      "event_class": "laugh",
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-      "duration": 1.06,
-      "start_time": 25.60866561020862,
-      "speaker_id": "2412"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000104.json b/conversations/conv_000104.json
deleted file mode 100644
index 3fd9884fabcd3334693979cd01ee0fd3e954e92f..0000000000000000000000000000000000000000
--- a/conversations/conv_000104.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.275000984839657,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "7976-105575",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0001",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 68098
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-      "segment_id": "seg0003",
-      "speaker_id": 0,
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-      "utterance_id": "7976-105575",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 82993
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
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-      "utterance_id": "6241-61946",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
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-      "segment_id": "seg0005",
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-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
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-}
\ No newline at end of file
diff --git a/conversations/conv_000105.json b/conversations/conv_000105.json
deleted file mode 100644
index 7f81e44bbd888f58a4a1b6441588c85e2d2335e3..0000000000000000000000000000000000000000
--- a/conversations/conv_000105.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
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-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 60555
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "real_speaker_id": "3536",
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-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
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-      "overlap": true,
-      "utterance_id": "3853-163249",
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-      "real_speaker_id": "3853",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
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-      "start_time": 24.03658992611432,
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-      "utterance_id": "1673-143396",
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-      "segment_id": "seg0006",
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-    }
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-  "background_events": [],
-  "foreground_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000106.json b/conversations/conv_000106.json
deleted file mode 100644
index d56b27fc9c02b996cd5962d7fc70ef36ee1aae99..0000000000000000000000000000000000000000
--- a/conversations/conv_000106.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.815095682041859,
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-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
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-      "utterance_id": "5694-64038",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
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-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
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-      "utterance_id": "3752-4943",
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-      "duration_frames": 66877,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 85107
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 29.42811937995054,
-      "end_time": 32.0,
-      "duration": 2.571880620049459,
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-      "utterance_id": "5694-64038",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 97191
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/327387.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/cough/0024.wav",
-      "duration": 0.7953156872985523,
-      "start_time": 29.173897213639936,
-      "speaker_id": "422"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5694/laugh/0051.wav",
-      "duration": 1.14,
-      "start_time": 30.86,
-      "speaker_id": "5694"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000107.json b/conversations/conv_000107.json
deleted file mode 100644
index 86bc496eef782a642460457979bd8037c52a1e68..0000000000000000000000000000000000000000
--- a/conversations/conv_000107.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 4.028274048157866,
-      "duration": 4.028274048157866,
-      "start_frame": 0,
-      "duration_frames": 64452,
-      "overlap": false,
-      "utterance_id": "5694-64029",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64029.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 3.929531179319336,
-      "end_time": 8.042574221000919,
-      "duration": 4.113043041681582,
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-      "overlap": true,
-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 8.80691900857898,
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-      "utterance_id": "5694-64029",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64029.flac |",
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-      "overlap": false,
-      "utterance_id": "2803-154328",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 20.82590426024221,
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-      "overlap": false,
-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 65808
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 23.805233098689147,
-      "end_time": 28.56512136877669,
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-      "duration_frames": 76158,
-      "overlap": true,
-      "utterance_id": "5694-64025",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 29.73184776506072,
-      "end_time": 32.0,
-      "duration": 2.2681522349392793,
-      "start_frame": 475709,
-      "duration_frames": 36290,
-      "overlap": false,
-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 117281
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/329896_15.wav",
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-    {
-      "event_class": "Blender",
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-  "paralinguistic_events": [
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-      "event_class": "cough",
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-      "event_class": "cough",
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-      "duration": 0.9,
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-      "speaker_id": "2803"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3752/laugh/0041.wav",
-      "duration": 1.16,
-      "start_time": 22.353216608422247,
-      "speaker_id": "3752"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000108.json b/conversations/conv_000108.json
deleted file mode 100644
index 071c5153df1901d2ce67e1b93caedf0a745f358f..0000000000000000000000000000000000000000
--- a/conversations/conv_000108.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "5694-64029",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64029.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 4.602247302770671,
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-      "utterance_id": "5895-34629",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 11.101708025986138,
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-      "overlap": false,
-      "utterance_id": "5895-34615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 16.512863481719418,
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-      "overlap": true,
-      "utterance_id": "3536-8226",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 21.273311025369296,
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-      "duration_frames": 99608,
-      "overlap": true,
-      "utterance_id": "5694-64029",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64029.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 59902
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "duration": 3.3297864072825547,
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-      "overlap": false,
-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/59327.wav",
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-  "paralinguistic_events": [
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-      "speaker_id": "5895"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5694/laugh/0004.wav",
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-    {
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-      "duration": 0.7370426671794192,
-      "start_time": 20.381037985368753,
-      "speaker_id": "5694"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000109.json b/conversations/conv_000109.json
deleted file mode 100644
index 38361dc11d151d6a20001cd6519aba374a5423ac..0000000000000000000000000000000000000000
--- a/conversations/conv_000109.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
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-      "start_time": 0.0,
-      "end_time": 6.415573258634066,
-      "duration": 6.415573258634066,
-      "start_frame": 0,
-      "duration_frames": 102649,
-      "overlap": false,
-      "utterance_id": "1993-147964",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 7.106829488856389,
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-      "overlap": false,
-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
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-      "duration_frames": 85056,
-      "overlap": true,
-      "utterance_id": "1993-147965",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147965.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 18.41174800536264,
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-      "start_frame": 294587,
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-      "overlap": false,
-      "utterance_id": "7850-73752",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-73752.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 22.482816061450663,
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-      "duration": 4.830262258315874,
-      "start_frame": 359725,
-      "duration_frames": 77284,
-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.59096908456127,
-      "end_time": 32.0,
-      "duration": 4.409030915438731,
-      "start_frame": 441455,
-      "duration_frames": 70544,
-      "overlap": false,
-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 66146
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/417229.wav",
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1993/laugh/0016.wav",
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-      "start_time": 14.509570614168151,
-      "speaker_id": "1993"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/laugh/0007.wav",
-      "duration": 0.6601344957416198,
-      "start_time": 21.613443185541026,
-      "speaker_id": "3000"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7850/laugh/0069.wav",
-      "duration": 1.64,
-      "start_time": 25.6601969023002,
-      "speaker_id": "7850"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7850/cough/0017.wav",
-      "duration": 0.7360709753185519,
-      "start_time": 26.75355986904146,
-      "speaker_id": "7850"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000110.json b/conversations/conv_000110.json
deleted file mode 100644
index b683241a8a4bd65285218842da2380a7a06e7661..0000000000000000000000000000000000000000
--- a/conversations/conv_000110.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
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-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 6.414407929845851,
-      "duration": 6.414407929845851,
-      "start_frame": 0,
-      "duration_frames": 102630,
-      "overlap": false,
-      "utterance_id": "6345-93302",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93302.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 6.986909509183871,
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-      "duration": 4.859144646930429,
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-      "duration_frames": 77746,
-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
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-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93306.flac |",
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-      "segment_id": "seg0005",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 158184
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-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/35872.wav",
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-  "foreground_events": [
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-      "event_class": "Dishes",
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-    {
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-    {
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/laugh/0022.wav",
-      "duration": 1.1216719025532194,
-      "start_time": 18.462063051842698,
-      "speaker_id": "7976"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/laugh/0044.wav",
-      "duration": 1.32,
-      "start_time": 30.68,
-      "speaker_id": "2078"
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-    {
-      "event_class": "cough",
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-      "speaker_id": "2078"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000111.json b/conversations/conv_000111.json
deleted file mode 100644
index b1a3798d44ff7724ba3a3d04afb6ae06e2672ca8..0000000000000000000000000000000000000000
--- a/conversations/conv_000111.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.342908824264676,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "5895-34629",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.471232091809458,
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-      "utterance_id": "1272-141231",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 12.931734703918973,
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-      "overlap": false,
-      "utterance_id": "5895-34622",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34622.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 17.771104134375893,
-      "end_time": 21.722134751355323,
-      "duration": 3.9510306169794314,
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-      "duration_frames": 63216,
-      "overlap": false,
-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.3946281018139,
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-      "duration": 6.731322338437211,
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-      "utterance_id": "5895-34629",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 97217
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 29.11499435812656,
-      "end_time": 31.342908824264676,
-      "duration": 2.2279144661381167,
-      "start_frame": 465839,
-      "duration_frames": 35646,
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-      "utterance_id": "1272-135031",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-135031.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/417229.wav",
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-      "event_class": "cough",
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-    {
-      "event_class": "laugh",
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-      "speaker_id": "1272"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1272/laugh/0017.wav",
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-      "speaker_id": "1272"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000112.json b/conversations/conv_000112.json
deleted file mode 100644
index 4d2b04cdaabc77dc31b099ab44bd0f2272b1680b..0000000000000000000000000000000000000000
--- a/conversations/conv_000112.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.471603894734795,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "utterance_id": "1462-170142",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170142.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
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-      "speaker_id": 2,
-      "start_time": 6.971153609420274,
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-      "overlap": false,
-      "utterance_id": "6295-64301",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
-      "real_speaker_id": "6295",
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-      "segment_id": "seg0002",
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-      "utterance_id": "1462-170138",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170138.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
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-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 16.0878132360789,
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-      "duration": 3.219880091732569,
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-      "duration_frames": 51518,
-      "overlap": true,
-      "utterance_id": "1462-170145",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 20.505959708102306,
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-      "utterance_id": "1272-135031",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-135031.flac |",
-      "real_speaker_id": "1272",
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-      "segment_id": "seg0005",
-      "speaker_id": 2,
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-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 0
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-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Vacuum_cleaner",
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-  "paralinguistic_events": [
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000113.json b/conversations/conv_000113.json
deleted file mode 100644
index d70c4d2c08bc52b777915fee51c7d90328123652..0000000000000000000000000000000000000000
--- a/conversations/conv_000113.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.65197885961232,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "overlap": false,
-      "utterance_id": "1462-170142",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170142.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-284437.flac |",
-      "real_speaker_id": "5338",
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-      "segment_id": "seg0002",
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-      "start_time": 9.45416159449047,
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-      "overlap": true,
-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
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-    {
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-      "start_time": 16.425655699098268,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170138.flac |",
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-    {
-      "segment_id": "seg0004",
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-      "utterance_id": "5338-24640",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
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-  "foreground_events": [
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-  "paralinguistic_events": [
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-    {
-      "event_class": "cough",
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-      "start_time": 9.490898458155911,
-      "speaker_id": "5338"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1673/laugh/0011.wav",
-      "duration": 1.4,
-      "start_time": 7.863220381925441,
-      "speaker_id": "1673"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/laugh/0090.wav",
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-      "start_time": 18.89875690677986,
-      "speaker_id": "1462"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/cough/0013.wav",
-      "duration": 0.9525581937655294,
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-      "speaker_id": "1462"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000114.json b/conversations/conv_000114.json
deleted file mode 100644
index 8232a59c8b6693478c0ac8320e3c092dcbdc8db3..0000000000000000000000000000000000000000
--- a/conversations/conv_000114.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.198001148313843,
-      "duration": 5.198001148313843,
-      "start_frame": 0,
-      "duration_frames": 83168,
-      "overlap": false,
-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
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-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 166933
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 30.456338024336247,
-      "end_time": 32.0,
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/589_1.wav",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
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-      "start_time": 10.340029913595538,
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/laugh/0053.wav",
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-      "event_class": "laugh",
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-      "duration": 1.72,
-      "start_time": 29.751392287035184,
-      "speaker_id": "1673"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000115.json b/conversations/conv_000115.json
deleted file mode 100644
index 4905ec14103dd599d0738d468ea53cb8546005e9..0000000000000000000000000000000000000000
--- a/conversations/conv_000115.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "start_time": 0.0,
-      "end_time": 5.449439107891715,
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-      "overlap": false,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 6.079783344591441,
-      "end_time": 11.364706096475526,
-      "duration": 5.284922751884086,
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-      "overlap": false,
-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 11.852365790945417,
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-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
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-      "speaker_id": 2,
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
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-      "position_frames": 0
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-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 31.524674595591314,
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-      "duration": 0.47532540440868587,
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-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 84558
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-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/2503.wav",
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-  "foreground_events": [
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-      "event_class": "Alarm_bell_ringing",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
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-    },
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-      "event_class": "laugh",
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-      "duration": 0.98,
-      "start_time": 10.729777897975763,
-      "speaker_id": "1988"
-    },
-    {
-      "event_class": "cough",
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-      "speaker_id": "1988"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000116.json b/conversations/conv_000116.json
deleted file mode 100644
index b36cbdbfeac29b5ef87cea5827bd817c39d8788f..0000000000000000000000000000000000000000
--- a/conversations/conv_000116.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
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-      "start_time": 0.0,
-      "end_time": 4.76433005762165,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
-    },
-    {
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-      "start_time": 5.151206059604632,
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-      "position_frames": 0
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-      "utterance_id": "8842-302196",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302196.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
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-      "start_time": 15.081062943761113,
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-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
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-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 73208
-    },
-    {
-      "segment_id": "seg0005",
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-      "duration": 4.449388030972726,
-      "start_frame": 404115,
-      "duration_frames": 71190,
-      "overlap": false,
-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 124666
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-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 29.84800132183388,
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-      "duration": 2.1519986781661196,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "position_frames": 76229
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/366511.wav",
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-  "paralinguistic_events": [
-    {
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1673/cough/0021.wav",
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-    {
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1673/laugh/0016.wav",
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000117.json b/conversations/conv_000117.json
deleted file mode 100644
index 322cb828514a8b381fb62a09f884143b51ef59ef..0000000000000000000000000000000000000000
--- a/conversations/conv_000117.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 31.41493961556471,
-  "num_speakers": 2,
-  "overlap_rate": 0.2,
-  "segments": [
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-      "start_frame": 0,
-      "duration_frames": 107917,
-      "overlap": false,
-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 7.211575923937318,
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-      "utterance_id": "2412-153947",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
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-      "segment_id": "seg0002",
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-      "start_time": 13.73967060194115,
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-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
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-      "position_frames": 107917
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-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
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-      "utterance_id": "2412-153954",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
-      "real_speaker_id": "2412",
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-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 26.70456272657463,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 207915
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-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
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-      "duration": 25.20655328798186,
-      "start_time": 4.777867124455926
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
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-    {
-      "event_class": "Dog",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/laugh/0053.wav",
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-      "start_time": 28.991173795117074,
-      "speaker_id": "7976"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000118.json b/conversations/conv_000118.json
deleted file mode 100644
index 437a41aa7325f6dea37c37e529dc112ba942ffcc..0000000000000000000000000000000000000000
--- a/conversations/conv_000118.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.66518352628499,
-  "num_speakers": 2,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 4.57447372213947,
-      "duration": 4.57447372213947,
-      "start_frame": 0,
-      "duration_frames": 73191,
-      "overlap": false,
-      "utterance_id": "1993-147964",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 5.193445043760472,
-      "end_time": 8.228291651451467,
-      "duration": 3.034846607690995,
-      "start_frame": 83095,
-      "duration_frames": 48557,
-      "overlap": true,
-      "utterance_id": "2412-153947",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 9.903358888131036,
-      "end_time": 16.03381314239715,
-      "duration": 6.130454254266114,
-      "start_frame": 158453,
-      "duration_frames": 98087,
-      "overlap": false,
-      "utterance_id": "1993-147149",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147149.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 16.94165223521506,
-      "end_time": 21.960069068751118,
-      "duration": 5.018416833536058,
-      "start_frame": 271066,
-      "duration_frames": 80294,
-      "overlap": false,
-      "utterance_id": "2412-153947",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 48557
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 23.25931017541465,
-      "end_time": 28.702914238849484,
-      "duration": 5.443604063434832,
-      "start_frame": 372148,
-      "duration_frames": 87097,
-      "overlap": false,
-      "utterance_id": "1993-147966",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147966.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 29.124614697727022,
-      "end_time": 31.66518352628499,
-      "duration": 2.5405688285579693,
-      "start_frame": 465993,
-      "duration_frames": 40649,
-      "overlap": true,
-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/271460.wav",
-      "duration": 16.848412698412698,
-      "start_time": 2.722635611101608
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/121891_1.wav",
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1993/cough/0040.wav",
-      "duration": 0.7585378374114222,
-      "start_time": 4.588430878939564,
-      "speaker_id": "1993"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/laugh/0046.wav",
-      "duration": 1.26,
-      "start_time": 3.7723746626043457,
-      "speaker_id": "2412"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/cough/0041.wav",
-      "duration": 1.18,
-      "start_time": 15.611000327495896,
-      "speaker_id": "2412"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1993/cough/0022.wav",
-      "duration": 1.36,
-      "start_time": 21.73488233359463,
-      "speaker_id": "1993"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000119.json b/conversations/conv_000119.json
deleted file mode 100644
index 748f76bad34e5e6aa9926964ea07f8434a2114f8..0000000000000000000000000000000000000000
--- a/conversations/conv_000119.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.83633125947188,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "start_time": 0.0,
-      "end_time": 4.718244200577397,
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-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "1993-147149",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147149.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.181021593444721,
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-      "duration": 4.063969470134975,
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-      "duration_frames": 65023,
-      "overlap": false,
-      "utterance_id": "5536-43358",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 10.082801306105509,
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-      "duration": 4.643618129407152,
-      "start_frame": 161324,
-      "duration_frames": 74297,
-      "overlap": false,
-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 15.362164780539143,
-      "end_time": 21.277078789940564,
-      "duration": 5.914914009401422,
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-      "duration_frames": 94638,
-      "overlap": false,
-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 74297
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 21.97337167296471,
-      "end_time": 26.04955070108024,
-      "duration": 4.076179028115528,
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-      "duration_frames": 65218,
-      "overlap": false,
-      "utterance_id": "5536-43359",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 26.450296169565203,
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-      "start_frame": 423204,
-      "duration_frames": 86176,
-      "overlap": false,
-      "utterance_id": "1993-147965",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147965.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/329896_9.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
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-      "duration": 1.28,
-      "start_time": 14.760855319110844,
-      "speaker_id": "1673"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1673/laugh/0003.wav",
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-      "start_time": 21.566724487042944,
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-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5536/laugh/0020.wav",
-      "duration": 0.8608026297739205,
-      "start_time": 26.11614921458593,
-      "speaker_id": "5536"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000120.json b/conversations/conv_000120.json
deleted file mode 100644
index 8a0852c21249d761a9d77fe60c07c2690c075205..0000000000000000000000000000000000000000
--- a/conversations/conv_000120.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "speaker_id": 0,
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-      "overlap": false,
-      "utterance_id": "6241-66616",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
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-      "duration_frames": 74398,
-      "overlap": false,
-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
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-      "utterance_id": "84-121123",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121123.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 21.657614269527294,
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-      "duration_frames": 90227,
-      "overlap": false,
-      "utterance_id": "6241-61943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 91940
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/50114.wav",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/84/laugh/0009.wav",
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/cough/0032.wav",
-      "duration": 1.0,
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/laugh/0024.wav",
-      "duration": 1.44,
-      "start_time": 26.34851650510191,
-      "speaker_id": "3170"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000121.json b/conversations/conv_000121.json
deleted file mode 100644
index 970c2d5b1cf5cbf2e7fdbd1407199f7d8094228d..0000000000000000000000000000000000000000
--- a/conversations/conv_000121.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "start_frame": 0,
-      "duration_frames": 82114,
-      "overlap": false,
-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
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-      "utterance_id": "7850-73752",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-73752.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
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-    {
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-  "foreground_events": [
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-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/cough/0001.wav",
-      "duration": 0.6949640466672964,
-      "start_time": 30.567919787295267,
-      "speaker_id": "1988"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000122.json b/conversations/conv_000122.json
deleted file mode 100644
index 563ff4f6f5f856875cc8adeb78fae4f4855262ad..0000000000000000000000000000000000000000
--- a/conversations/conv_000122.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.593143978845573,
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-      "utterance_id": "6241-66616",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
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-      "speaker_id": 2,
-      "start_time": 9.574585144395758,
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-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 14.009659351481455,
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-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 64270
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 19.655364431109955,
-      "end_time": 25.531120053418544,
-      "duration": 5.8757556223085885,
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-      "duration_frames": 94012,
-      "overlap": false,
-      "utterance_id": "6241-66616",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 76135
-    },
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 25.857020774616476,
-      "end_time": 32.0,
-      "duration": 6.142979225383524,
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-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 144862
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-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/59326.wav",
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-      "event_class": "Frying",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3752/laugh/0070.wav",
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-      "event_class": "cough",
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-      "speaker_id": "3752"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000123.json b/conversations/conv_000123.json
deleted file mode 100644
index 3ff9c89f1b1880fdaa08bc58a81f7f6eb67b7b26..0000000000000000000000000000000000000000
--- a/conversations/conv_000123.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.1563739234055,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.3001738201075095,
-      "duration": 3.3001738201075095,
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-      "overlap": false,
-      "utterance_id": "6241-61946",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
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-      "start_time": 4.202346026352879,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-50561.flac |",
-      "real_speaker_id": "174",
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-      "segment_id": "seg0002",
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-      "start_time": 10.721127433974683,
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-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 17.893844966117403,
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-      "utterance_id": "174-168635",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-168635.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.353868827774896,
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-      "utterance_id": "6241-61946",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 52802
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 27.978763243781195,
-      "end_time": 31.1563739234055,
-      "duration": 3.177610679624305,
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-      "duration_frames": 50841,
-      "overlap": true,
-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 108460
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/91517.wav",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
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-    {
-      "event_class": "laugh",
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-    {
-      "event_class": "laugh",
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-    {
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-      "duration": 1.1,
-      "start_time": 26.7202629074089,
-      "speaker_id": "6295"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000124.json b/conversations/conv_000124.json
deleted file mode 100644
index 864281c839e00d092cb4d5447d786ebb508e71cf..0000000000000000000000000000000000000000
--- a/conversations/conv_000124.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.75762167516312,
-  "num_speakers": 3,
-  "overlap_rate": 0.5,
-  "segments": [
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-      "utterance_id": "5536-43363",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43363.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
-      "real_speaker_id": "5694",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
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-      "real_speaker_id": "2428",
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
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-  "foreground_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000125.json b/conversations/conv_000125.json
deleted file mode 100644
index 9cc17a9133f0fea8c4dac94357a30c1114939a61..0000000000000000000000000000000000000000
--- a/conversations/conv_000125.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 30.90011426996253,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
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-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/84/cough/0019.wav",
-      "duration": 0.5765063661772046,
-      "start_time": 22.153117034437326,
-      "speaker_id": "84"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3081/cough/0077.wav",
-      "duration": 0.92,
-      "start_time": 30.924194263298787,
-      "speaker_id": "3081"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000126.json b/conversations/conv_000126.json
deleted file mode 100644
index 87db1043436ab157035260a7de39a417e9ed3004..0000000000000000000000000000000000000000
--- a/conversations/conv_000126.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.317343090418433,
-      "duration": 5.317343090418433,
-      "start_frame": 0,
-      "duration_frames": 85077,
-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.00514399135922,
-      "end_time": 11.685277116899584,
-      "duration": 5.680133125540364,
-      "start_frame": 96082,
-      "duration_frames": 90882,
-      "overlap": false,
-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 12.483184769294162,
-      "end_time": 17.7656093708692,
-      "duration": 5.282424601575039,
-      "start_frame": 199730,
-      "duration_frames": 84518,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 18.463667907267855,
-      "end_time": 24.769864820657673,
-      "duration": 6.306196913389819,
-      "start_frame": 295418,
-      "duration_frames": 100899,
-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 85077
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 25.931145853308763,
-      "end_time": 30.753937945956203,
-      "duration": 4.8227920926474415,
-      "start_frame": 414898,
-      "duration_frames": 77164,
-      "overlap": true,
-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 31.435560656166544,
-      "end_time": 32.0,
-      "duration": 0.5644393438334561,
-      "start_frame": 502968,
-      "duration_frames": 9031,
-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 185976
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/87621.wav",
-      "duration": 14.243225258620583,
-      "start_time": 5.190896757860572
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/146200_0.wav",
-      "duration": 3.1841842934324633,
-      "start_time": 6.126910647012688
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-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/213889_6.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/laugh/0007.wav",
-      "duration": 1.16,
-      "start_time": 6.96128154012447,
-      "speaker_id": "2086"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3576/laugh/0009.wav",
-      "duration": 0.9851410329833228,
-      "start_time": 17.866383524401208,
-      "speaker_id": "3576"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3576/cough/0022.wav",
-      "duration": 1.4906060573380913,
-      "start_time": 17.874028672708864,
-      "speaker_id": "3576"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/cough/0007.wav",
-      "duration": 1.0858863625413973,
-      "start_time": 24.648762960555143,
-      "speaker_id": "2086"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000127.json b/conversations/conv_000127.json
deleted file mode 100644
index cc776cf51f25624dc0fa43e0db26f3950bcfdd51..0000000000000000000000000000000000000000
--- a/conversations/conv_000127.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 4.394753100583654,
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-      "overlap": false,
-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 5.223569902155231,
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-      "overlap": false,
-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
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-      "overlap": true,
-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 70316
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 16.43398144475024,
-      "end_time": 21.16608095059991,
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 149813
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 22.372397653650133,
-      "end_time": 26.68986339474168,
-      "duration": 4.317465741091548,
-      "start_frame": 357958,
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-      "overlap": false,
-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 27.252369891389478,
-      "end_time": 32.0,
-      "duration": 4.747630108610522,
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-      "overlap": false,
-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 225526
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366511.wav",
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-      "start_time": 5.564930568087685
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-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
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-  "paralinguistic_events": [
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-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/777/cough/0052.wav",
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-    {
-      "event_class": "cough",
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-      "duration": 0.5502330483590252,
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-      "speaker_id": "251"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/251/cough/0008.wav",
-      "duration": 0.94,
-      "start_time": 26.800306408352604,
-      "speaker_id": "251"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000128.json b/conversations/conv_000128.json
deleted file mode 100644
index 5b596b1b9a94f7fc540d49e98b2952bda383d003..0000000000000000000000000000000000000000
--- a/conversations/conv_000128.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 1,
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-      "overlap": false,
-      "utterance_id": "1993-147964",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
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-      "segment_id": "seg0002",
-      "speaker_id": 2,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
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-      "segment_id": "seg0003",
-      "speaker_id": 0,
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-      "overlap": true,
-      "utterance_id": "2277-149874",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 23.99122110182693,
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-      "duration_frames": 98307,
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-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 204190
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
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-      "end_time": 32.0,
-      "duration": 1.678294251933231,
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-      "overlap": false,
-      "utterance_id": "1993-147964",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 65263
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
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-  "paralinguistic_events": [
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2277/laugh/0080.wav",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000129.json b/conversations/conv_000129.json
deleted file mode 100644
index 162f0387ed7be606a83b9a3469f2391d11c1bd86..0000000000000000000000000000000000000000
--- a/conversations/conv_000129.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.461602903242632,
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-      "utterance_id": "6241-61943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.946961838164653,
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-      "segment_id": "seg0002",
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-      "utterance_id": "6241-61943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
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-    {
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-  "background_events": [
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-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/59513_10.wav",
-      "duration": 0.3551020408163265,
-      "start_time": 30.843963074563053
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6241/laugh/0009.wav",
-      "duration": 0.9485964644132647,
-      "start_time": 5.708497090836919,
-      "speaker_id": "6241"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6241/cough/0053.wav",
-      "duration": 0.5139297699864489,
-      "start_time": 12.754493429655085,
-      "speaker_id": "6241"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5694/cough/0005.wav",
-      "duration": 0.3219832111242525,
-      "start_time": 18.73897300842034,
-      "speaker_id": "5694"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000130.json b/conversations/conv_000130.json
deleted file mode 100644
index 37562387c24d2657330c7098bc422e75b531c6ca..0000000000000000000000000000000000000000
--- a/conversations/conv_000130.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.715728180017713,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 5.644600371335132,
-      "duration": 5.644600371335132,
-      "start_frame": 0,
-      "duration_frames": 90313,
-      "overlap": false,
-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 6.1522037595580725,
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-      "duration": 4.939675795656798,
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-      "utterance_id": "8842-302201",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 11.284744507744993,
-      "end_time": 14.797346848370314,
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-      "duration_frames": 56201,
-      "overlap": false,
-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 14.477895330597395,
-      "end_time": 20.179841369036875,
-      "duration": 5.701946038439481,
-      "start_frame": 231646,
-      "duration_frames": 91231,
-      "overlap": true,
-      "utterance_id": "2428-83699",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 21.510536332232675,
-      "end_time": 26.782779983483717,
-      "duration": 5.272243651251042,
-      "start_frame": 344168,
-      "duration_frames": 84355,
-      "overlap": false,
-      "utterance_id": "8842-304647",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-304647.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.28383994108394,
-      "end_time": 31.715728180017713,
-      "duration": 4.431888238933775,
-      "start_frame": 436541,
-      "duration_frames": 70910,
-      "overlap": false,
-      "utterance_id": "7976-105575",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/353124.wav",
-      "duration": 12.794048565838043,
-      "start_time": 14.96121541207827
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-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/59513_13.wav",
-      "duration": 0.3160770975056689,
-      "start_time": 22.581702256958412
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/laugh/0019.wav",
-      "duration": 1.2904445987382374,
-      "start_time": 4.674781907917896,
-      "speaker_id": "8842"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/laugh/0017.wav",
-      "duration": 0.620311561720589,
-      "start_time": 31.379688438279413,
-      "speaker_id": "7976"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000131.json b/conversations/conv_000131.json
deleted file mode 100644
index d1888eebd9319dab6690d9af1b9a1281d17a87e9..0000000000000000000000000000000000000000
--- a/conversations/conv_000131.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.090754369319081,
-      "duration": 3.090754369319081,
-      "start_frame": 0,
-      "duration_frames": 49452,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 3.6177667949112773,
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-      "duration": 4.976793732849432,
-      "start_frame": 57884,
-      "duration_frames": 79628,
-      "overlap": false,
-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 7.8240631465783945,
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-      "overlap": true,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 49452
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 13.926642741827939,
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-      "duration": 6.937203333598045,
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-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 21.486647299428128,
-      "end_time": 26.480853881240336,
-      "duration": 4.9942065818122074,
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-      "duration_frames": 79907,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 121421
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 26.984862341936562,
-      "end_time": 30.95182069176871,
-      "duration": 3.966958349832148,
-      "start_frame": 431757,
-      "duration_frames": 63471,
-      "overlap": false,
-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 110995
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 31.408110086881354,
-      "end_time": 32.0,
-      "duration": 0.5918899131186457,
-      "start_frame": 502529,
-      "duration_frames": 9470,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 201328
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/116434_2.wav",
-      "duration": 3.357523752036695,
-      "start_time": 27.811992909047692
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-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/347708.wav",
-      "duration": 4.533545948196089,
-      "start_time": 13.823054638385466
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/cough/0028.wav",
-      "duration": 0.36295259149439285,
-      "start_time": 7.276878856297178,
-      "speaker_id": "422"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/251/laugh/0048.wav",
-      "duration": 0.6398901802712476,
-      "start_time": 20.96703425950105,
-      "speaker_id": "251"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/cough/0017.wav",
-      "duration": 0.6728022070943359,
-      "start_time": 26.589496078668095,
-      "speaker_id": "422"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/251/cough/0041.wav",
-      "duration": 0.7602108293912868,
-      "start_time": 29.206847045618286,
-      "speaker_id": "251"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000132.json b/conversations/conv_000132.json
deleted file mode 100644
index 83ee38e01f602e08cf3300a0f6ead86261f0d98a..0000000000000000000000000000000000000000
--- a/conversations/conv_000132.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.781844985966812,
-      "duration": 5.781844985966812,
-      "start_frame": 0,
-      "duration_frames": 92509,
-      "overlap": false,
-      "utterance_id": "7976-105575",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 6.222555830429563,
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-      "duration": 5.757892014761302,
-      "start_frame": 99560,
-      "duration_frames": 92126,
-      "overlap": false,
-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 12.333638799302209,
-      "end_time": 16.74802501966976,
-      "duration": 4.41438622036755,
-      "start_frame": 197338,
-      "duration_frames": 70630,
-      "overlap": false,
-      "utterance_id": "5338-284437",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-284437.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 17.64875750417437,
-      "end_time": 23.249511939468526,
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-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 24.166388170261733,
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-      "duration": 5.349927561631808,
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-      "utterance_id": "5338-24640",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 29.7978262581071,
-      "end_time": 32.0,
-      "duration": 2.2021737418928993,
-      "start_frame": 476765,
-      "duration_frames": 35234,
-      "overlap": false,
-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 89612
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/59513_10.wav",
-      "duration": 0.3551020408163265,
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-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/79633.wav",
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5338/laugh/0023.wav",
-      "duration": 1.0,
-      "start_time": 16.958583747717025,
-      "speaker_id": "5338"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/laugh/0003.wav",
-      "duration": 0.6485291343427375,
-      "start_time": 23.42844581413818,
-      "speaker_id": "7976"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5338/laugh/0024.wav",
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-      "start_time": 28.33302207823885,
-      "speaker_id": "5338"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/laugh/0066.wav",
-      "duration": 0.96,
-      "start_time": 28.699328503878675,
-      "speaker_id": "7976"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000133.json b/conversations/conv_000133.json
deleted file mode 100644
index f188bb41617e1f5b277949b532063dd328a1c503..0000000000000000000000000000000000000000
--- a/conversations/conv_000133.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 5.485570900670541,
-      "end_time": 9.475449541330732,
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-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
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-    },
-    {
-      "segment_id": "seg0002",
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-      "start_time": 9.771414910643141,
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-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 75817
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-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
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-    {
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 141392
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 25.765600572786347,
-      "end_time": 29.15508582943547,
-      "duration": 3.3894852566491243,
-      "start_frame": 412249,
-      "duration_frames": 54231,
-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 135168
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-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 29.34537786047385,
-      "end_time": 32.0,
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-      "utterance_id": "2277-149897",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149897.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/74723_1.wav",
-      "duration": 1.397437641723356,
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/laugh/0002.wav",
-      "duration": 1.0915162148502606,
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-      "event_class": "cough",
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-      "duration": 0.88,
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-      "start_time": 19.02987657056795,
-      "speaker_id": "2078"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000134.json b/conversations/conv_000134.json
deleted file mode 100644
index f23536cbe8832a3091ffbab292d04f51cc507045..0000000000000000000000000000000000000000
--- a/conversations/conv_000134.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 6.164622377957646,
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-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 6.580500579960829,
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-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
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-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 12.369684226768653,
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-      "overlap": false,
-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.71799552553454,
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-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 98633
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 21.82799737329028,
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-      "duration_frames": 72360,
-      "overlap": true,
-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 67952
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 27.179775737480607,
-      "end_time": 32.0,
-      "duration": 4.8202242625193925,
-      "start_frame": 434876,
-      "duration_frames": 77123,
-      "overlap": false,
-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 84884
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/428863.wav",
-      "duration": 24.77305301176284,
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-  "foreground_events": [
-    {
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/362765_0.wav",
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-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/41634.wav",
-      "duration": 1.2095691609977324,
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-  "paralinguistic_events": [
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-    {
-      "event_class": "laugh",
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-      "speaker_id": "2086"
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/laugh/0073.wav",
-      "duration": 0.8299014707458718,
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-      "speaker_id": "7976"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000135.json b/conversations/conv_000135.json
deleted file mode 100644
index b27c3217850af3952d5f3c825cd166e6a3a865c1..0000000000000000000000000000000000000000
--- a/conversations/conv_000135.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.841673672614835,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "7850-111771",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-111771.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 7.151047563531208,
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-      "overlap": false,
-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
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-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 12.371608408869301,
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-      "overlap": true,
-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 88343
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-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 16.455291031178863,
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-      "overlap": false,
-      "utterance_id": "7850-111771",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-111771.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 101635
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 22.370000203078124,
-      "end_time": 25.81340403610177,
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-      "start_frame": 357920,
-      "duration_frames": 55094,
-      "overlap": false,
-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 26.52274600883842,
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-      "overlap": false,
-      "utterance_id": "7850-73752",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-73752.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/189735.wav",
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-      "start_time": 12.78419730063308,
-      "speaker_id": "6313"
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-    {
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-      "duration": 1.14,
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7850/cough/0020.wav",
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-      "start_time": 25.33393503768982,
-      "speaker_id": "7850"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000136.json b/conversations/conv_000136.json
deleted file mode 100644
index cb341010e28d58971ba4752a70bad6756e493989..0000000000000000000000000000000000000000
--- a/conversations/conv_000136.json
+++ /dev/null
@@ -1,165 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.038485802976913,
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-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
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-    {
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-      "duration_frames": 82064,
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-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 17.95594322305939,
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-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 111205
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
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-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 28.245105186943885,
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-      "duration": 3.754894813056115,
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 172466
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/589_1.wav",
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/laugh/0021.wav",
-      "duration": 0.5983862969969558,
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-      "speaker_id": "2078"
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-    {
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6313/laugh/0074.wav",
-      "duration": 1.62,
-      "start_time": 12.986953970306203,
-      "speaker_id": "6313"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/cough/0041.wav",
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-      "start_time": 17.00578979152103,
-      "speaker_id": "2078"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1673/laugh/0010.wav",
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-      "start_time": 21.029329451501088,
-      "speaker_id": "1673"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1673/cough/0005.wav",
-      "duration": 0.9867213466373381,
-      "start_time": 20.97244955118173,
-      "speaker_id": "1673"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/laugh/0026.wav",
-      "duration": 1.28,
-      "start_time": 30.72,
-      "speaker_id": "2078"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/cough/0036.wav",
-      "duration": 0.9374385530898137,
-      "start_time": 31.062561446910188,
-      "speaker_id": "2078"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000137.json b/conversations/conv_000137.json
deleted file mode 100644
index 95df8e0f5701f826f63b5eda741ae6b1d186c9fd..0000000000000000000000000000000000000000
--- a/conversations/conv_000137.json
+++ /dev/null
@@ -1,172 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.53219121470266,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000138.json b/conversations/conv_000138.json
deleted file mode 100644
index ed7ce6f315862fc1592f4457216b1558dfc5e0c0..0000000000000000000000000000000000000000
--- a/conversations/conv_000138.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000139.json b/conversations/conv_000139.json
deleted file mode 100644
index 2a826aaa19de154f9e62122684820ed98b30f1d2..0000000000000000000000000000000000000000
--- a/conversations/conv_000139.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 2,
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-      "speaker_id": "7850"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000140.json b/conversations/conv_000140.json
deleted file mode 100644
index 4e152c7ef949f6cc6dd1b1dadf971a9d001055bc..0000000000000000000000000000000000000000
--- a/conversations/conv_000140.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.42857142857142855,
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-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 50978
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 30.390055198460544,
-      "end_time": 32.0,
-      "duration": 1.6099448015394557,
-      "start_frame": 486240,
-      "duration_frames": 25759,
-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 165038
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/366069.wav",
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-  "paralinguistic_events": [
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-      "speaker_id": "5536"
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-    {
-      "event_class": "cough",
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-      "duration": 0.96,
-      "start_time": 0,
-      "speaker_id": "5536"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5536/laugh/0043.wav",
-      "duration": 0.526696995081424,
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-      "speaker_id": "5536"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3752/laugh/0039.wav",
-      "duration": 1.82,
-      "start_time": 14.020407048935283,
-      "speaker_id": "3752"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3081/laugh/0024.wav",
-      "duration": 0.6843133698412289,
-      "start_time": 18.27867345605705,
-      "speaker_id": "3081"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000141.json b/conversations/conv_000141.json
deleted file mode 100644
index 535d78d026998398d870e018a13bd70e94950230..0000000000000000000000000000000000000000
--- a/conversations/conv_000141.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.3699337829229092,
-      "duration": 3.3699337829229092,
-      "start_frame": 0,
-      "duration_frames": 53918,
-      "overlap": false,
-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 3.7075221211578233,
-      "end_time": 9.513291842970428,
-      "duration": 5.805769721812604,
-      "start_frame": 59320,
-      "duration_frames": 92892,
-      "overlap": false,
-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 9.986029190796653,
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-      "duration": 6.499533730918034,
-      "start_frame": 159776,
-      "duration_frames": 103992,
-      "overlap": false,
-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 16.946624534157593,
-      "end_time": 23.114785996124265,
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-      "start_frame": 271145,
-      "duration_frames": 98690,
-      "overlap": false,
-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 22.822576710898538,
-      "end_time": 26.13597146728813,
-      "duration": 3.3133947563895916,
-      "start_frame": 365161,
-      "duration_frames": 53014,
-      "overlap": true,
-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 92892
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 27.952760164757397,
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-      "duration": 4.047239835242603,
-      "start_frame": 447244,
-      "duration_frames": 64755,
-      "overlap": false,
-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 98690
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/132472.wav",
-      "duration": 16.561632653061224,
-      "start_time": 8.034261679736577
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-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/213889_2.wav",
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-  "paralinguistic_events": [
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-      "speaker_id": "3752"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/laugh/0001.wav",
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-    {
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-      "duration": 0.8,
-      "start_time": 15.980669486480274,
-      "speaker_id": "3752"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0003.wav",
-      "duration": 1.2,
-      "start_time": 23.248788063861067,
-      "speaker_id": "1988"
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-    {
-      "event_class": "cough",
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-      "duration": 1.0156920319015754,
-      "start_time": 26.332293598416616,
-      "speaker_id": "1988"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000142.json b/conversations/conv_000142.json
deleted file mode 100644
index f1208cc79950425c89fbc73befcbe75cb1506a40..0000000000000000000000000000000000000000
--- a/conversations/conv_000142.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.9738937600236,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "overlap": false,
-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 4.7244852349147095,
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-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
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-      "start_time": 10.551975605876136,
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-      "overlap": false,
-      "utterance_id": "2412-153954",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
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-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.258783267991937,
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-      "utterance_id": "2412-153947",
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-      "real_speaker_id": "2412",
-      "position_frames": 0
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 28.522591223975752,
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-      "duration_frames": 55220,
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-      "utterance_id": "2412-153954",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 104170
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/377982.wav",
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-      "event_class": "Running_water",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/laugh/0001.wav",
-      "duration": 0.5619622128821973,
-      "start_time": 4.036482655777582,
-      "speaker_id": "2086"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000143.json b/conversations/conv_000143.json
deleted file mode 100644
index 8698bea97cc06b322d8e637a760bafe006fc153f..0000000000000000000000000000000000000000
--- a/conversations/conv_000143.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.250543027206163,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "2412-153954",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 5.560010400981311,
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-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
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-    {
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-      "start_time": 10.160729928962228,
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-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
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-    {
-      "segment_id": "seg0003",
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-      "start_time": 17.42864320154339,
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-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
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-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 23.143881527846826,
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-      "overlap": false,
-      "utterance_id": "2412-153947",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0005",
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-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
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-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/378702.wav",
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-      "event_class": "Vacuum_cleaner",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/laugh/0053.wav",
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-      "speaker_id": "652"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/cough/0013.wav",
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-      "start_time": 31.395342104035112,
-      "speaker_id": "652"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000144.json b/conversations/conv_000144.json
deleted file mode 100644
index d9f9a9a38b9b301166fa65d898c3ae1c8535672c..0000000000000000000000000000000000000000
--- a/conversations/conv_000144.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
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-      "duration_frames": 103892,
-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 6.96070764240002,
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-      "overlap": false,
-      "utterance_id": "1272-141231",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 13.401015934122631,
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-      "duration_frames": 73155,
-      "overlap": true,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000145.json b/conversations/conv_000145.json
deleted file mode 100644
index 315b56d8d0dc7b9d4501e4f0256e4028c66f20fd..0000000000000000000000000000000000000000
--- a/conversations/conv_000145.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.60759036607557,
-  "num_speakers": 3,
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-      "utterance_id": "2412-153954",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
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-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
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-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 25.952660760849255,
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-      "real_speaker_id": "2412",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000146.json b/conversations/conv_000146.json
deleted file mode 100644
index 059f07fa9c82bbac5b3be5ddc54bcef48819f3f5..0000000000000000000000000000000000000000
--- a/conversations/conv_000146.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
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-      "real_speaker_id": "3536",
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-  ],
-  "background_events": [
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-      "speaker_id": "5536"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000147.json b/conversations/conv_000147.json
deleted file mode 100644
index e8c17da85e5c5398feaf3380fafcbbdb347e9f2c..0000000000000000000000000000000000000000
--- a/conversations/conv_000147.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
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-      "real_speaker_id": "422",
-      "position_frames": 94192
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 27.6813880887891,
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-      "duration": 4.318611911210901,
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-      "duration_frames": 69097,
-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 94338
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/170745.wav",
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-  "paralinguistic_events": [
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-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/laugh/0024.wav",
-      "duration": 1.1938009780674508,
-      "start_time": 22.257452257243127,
-      "speaker_id": "3170"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/laugh/0026.wav",
-      "duration": 1.4,
-      "start_time": 27.06922846099358,
-      "speaker_id": "422"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000148.json b/conversations/conv_000148.json
deleted file mode 100644
index 28f80d431fe37ad7186606105fa2f860c6d9006d..0000000000000000000000000000000000000000
--- a/conversations/conv_000148.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
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-      "speaker_id": "3536"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000149.json b/conversations/conv_000149.json
deleted file mode 100644
index f3d35d6eeab9744874e18390444e232c16a8a988..0000000000000000000000000000000000000000
--- a/conversations/conv_000149.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-161169.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
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-      "real_speaker_id": "2803",
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-  "background_events": [
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\ No newline at end of file
diff --git a/conversations/conv_000150.json b/conversations/conv_000150.json
deleted file mode 100644
index d3e5e5288e52c5b1ed8ba54c5d29f791b4f6a275..0000000000000000000000000000000000000000
--- a/conversations/conv_000150.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.282107289891492,
-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000151.json b/conversations/conv_000151.json
deleted file mode 100644
index f261838978cb112dc2c1c3c619cc5fb64d48bf9e..0000000000000000000000000000000000000000
--- a/conversations/conv_000151.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000152.json b/conversations/conv_000152.json
deleted file mode 100644
index c80bb2c98f3ed705de28f17786685c75315a3895..0000000000000000000000000000000000000000
--- a/conversations/conv_000152.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "2078-142845",
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-    {
-      "segment_id": "seg0001",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
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-  "foreground_events": [
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-      "event_class": "Dishes",
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-      "speaker_id": "5895"
-    }
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-}
\ No newline at end of file
diff --git a/conversations/conv_000153.json b/conversations/conv_000153.json
deleted file mode 100644
index 3e52b9a577b766152cec2fb630ebf5dd6f07ff8d..0000000000000000000000000000000000000000
--- a/conversations/conv_000153.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.65087566874551,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
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-      "utterance_id": "6345-93306",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93306.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
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-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 3.179179848954612,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93302.flac |",
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-      "utterance_id": "2803-161169",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-161169.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93302.flac |",
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-      "position_frames": 132513
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-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/146200_0.wav",
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-      "speaker_id": "6345"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000154.json b/conversations/conv_000154.json
deleted file mode 100644
index cd4a6a1f3a97bb12e19b9968cc356fa783192e6b..0000000000000000000000000000000000000000
--- a/conversations/conv_000154.json
+++ /dev/null
@@ -1,165 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-50561.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
-      "real_speaker_id": "174",
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
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-      "utterance_id": "174-168635",
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-      "real_speaker_id": "174",
-      "position_frames": 0
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-  "background_events": [
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-      "event_class": "Electric_shaver_toothbrush",
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-    {
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-      "event_class": "cough",
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-      "duration": 1.16,
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-      "event_class": "cough",
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-      "start_time": 31.21794855990399,
-      "speaker_id": "174"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000155.json b/conversations/conv_000155.json
deleted file mode 100644
index 0aebf760caa3acba6cb23968c15da892dd1d2238..0000000000000000000000000000000000000000
--- a/conversations/conv_000155.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "utterance_id": "2277-149896",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149896.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    },
-    {
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-      "real_speaker_id": "8842",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302203.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
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-      "segment_id": "seg0005",
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-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
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-      "segment_id": "seg0006",
-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
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-  "foreground_events": [
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-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/347708.wav",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/cough/0051.wav",
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-      "duration": 1.34,
-      "start_time": 9.862201527004263,
-      "speaker_id": "2428"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000156.json b/conversations/conv_000156.json
deleted file mode 100644
index 100bb01d44dd42310e0d027723563d20f1be5962..0000000000000000000000000000000000000000
--- a/conversations/conv_000156.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.368564906170851,
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-      "overlap": false,
-      "utterance_id": "1993-147964",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 5.936300124593332,
-      "end_time": 9.232061200585976,
-      "duration": 3.2957610759926443,
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
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-      "position_frames": 0
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-      "utterance_id": "1993-147965",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147965.flac |",
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-      "start_time": 14.81703952594873,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
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-      "segment_id": "seg0004",
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-      "utterance_id": "1993-147965",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147965.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 79879
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 144288
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 30.821396800665426,
-      "end_time": 32.0,
-      "duration": 1.1786031993345745,
-      "start_frame": 493142,
-      "duration_frames": 18857,
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-      "utterance_id": "1993-147964",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 85897
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-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/87621.wav",
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-      "speaker_id": "1993"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000157.json b/conversations/conv_000157.json
deleted file mode 100644
index d8cea415247e3f07fd639049a0291473c5034736..0000000000000000000000000000000000000000
--- a/conversations/conv_000157.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.161947557972383,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "start_time": 0.0,
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-      "utterance_id": "2412-153947",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 5.761879541080676,
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-      "utterance_id": "2412-153954",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
-      "real_speaker_id": "2412",
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-      "overlap": false,
-      "utterance_id": "84-121123",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121123.flac |",
-      "real_speaker_id": "84",
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-      "utterance_id": "6241-61943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
-      "real_speaker_id": "6241",
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-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0005",
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-      "overlap": true,
-      "utterance_id": "6241-61943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 94175
-    }
-  ],
-  "background_events": [
-    {
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/589_1.wav",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/laugh/0004.wav",
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-      "speaker_id": "2412"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/laugh/0053.wav",
-      "duration": 1.28,
-      "start_time": 9.468632355708554,
-      "speaker_id": "2412"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/84/laugh/0027.wav",
-      "duration": 1.4902589624704352,
-      "start_time": 19.407006166947877,
-      "speaker_id": "84"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000158.json b/conversations/conv_000158.json
deleted file mode 100644
index af7d5bcfff2b986cce082d94f99f6de163221fe9..0000000000000000000000000000000000000000
--- a/conversations/conv_000158.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
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-      "utterance_id": "5536-43359",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
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-      "start_time": 4.16246027255296,
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-      "overlap": true,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
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-      "real_speaker_id": "5694",
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-      "utterance_id": "5694-64029",
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-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
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-      "start_time": 31.5933077622463,
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-      "utterance_id": "2277-149874",
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-      "real_speaker_id": "2277",
-      "position_frames": 75867
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-  "background_events": [
-    {
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-    {
-      "event_class": "Cat",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2277/laugh/0054.wav",
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-    {
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2277/laugh/0039.wav",
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-      "speaker_id": "2277"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000159.json b/conversations/conv_000159.json
deleted file mode 100644
index d48d53a3a4032dd6e7e5bd57987b0284f271fe0f..0000000000000000000000000000000000000000
--- a/conversations/conv_000159.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.47572614098137,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "start_time": 0.0,
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-      "start_frame": 0,
-      "duration_frames": 83187,
-      "overlap": false,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 20.71360439172782,
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-      "duration_frames": 90537,
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-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
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-  ],
-  "background_events": [
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-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366511.wav",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000160.json b/conversations/conv_000160.json
deleted file mode 100644
index e0a78797b90fea7e934a0e2c886514c0ae15ae6c..0000000000000000000000000000000000000000
--- a/conversations/conv_000160.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 5.93790981651237,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
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-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
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-      "speaker_id": 1,
-      "start_time": 21.672068019106487,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 89438
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-      "speaker_id": 0,
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-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 69495
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-  ],
-  "background_events": [
-    {
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-  ]
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\ No newline at end of file
diff --git a/conversations/conv_000161.json b/conversations/conv_000161.json
deleted file mode 100644
index c92a3edd49576120f5e69f59ddcffd57dbb69f6c..0000000000000000000000000000000000000000
--- a/conversations/conv_000161.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.304671980269838,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
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-      "utterance_id": "3536-8226",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
-    },
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
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-    {
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-  "background_events": [],
-  "foreground_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000162.json b/conversations/conv_000162.json
deleted file mode 100644
index d852dcdb078134b14f3898df9a9c06fc77135077..0000000000000000000000000000000000000000
--- a/conversations/conv_000162.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2428/laugh/0015.wav",
-      "duration": 1.38,
-      "start_time": 30.591998726367535,
-      "speaker_id": "2428"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000163.json b/conversations/conv_000163.json
deleted file mode 100644
index edb8f78ef2e2703be80b877870b12fdccf7b4359..0000000000000000000000000000000000000000
--- a/conversations/conv_000163.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.95239432409617,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 3.666667599463236,
-      "duration": 3.666667599463236,
-      "start_frame": 0,
-      "duration_frames": 58666,
-      "overlap": false,
-      "utterance_id": "8842-302201",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.358140071723611,
-      "end_time": 9.59227617940889,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-284437.flac |",
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-      "duration_frames": 73659,
-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.0396899103159,
-      "end_time": 20.899798912003252,
-      "duration": 4.860109001687353,
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-      "duration_frames": 77761,
-      "overlap": false,
-      "utterance_id": "5338-284437",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-284437.flac |",
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-      "position_frames": 83746
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
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-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 73659
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 26.194086008741355,
-      "end_time": 31.95239432409617,
-      "duration": 5.758308315354812,
-      "start_frame": 419105,
-      "duration_frames": 92132,
-      "overlap": false,
-      "utterance_id": "5338-284437",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-284437.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 161507
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/417995.wav",
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-      "event_class": "Running_water",
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-    {
-      "event_class": "laugh",
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-    {
-      "event_class": "laugh",
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-      "start_time": 15.283527076183113,
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-    {
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-      "duration": 1.08,
-      "start_time": 19.981708544201737,
-      "speaker_id": "1919"
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-    {
-      "event_class": "laugh",
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-      "duration": 1.42,
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-    {
-      "event_class": "cough",
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-      "speaker_id": "5338"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000164.json b/conversations/conv_000164.json
deleted file mode 100644
index a9eaf2a7f8533aafce0f896393435ccb65da8b57..0000000000000000000000000000000000000000
--- a/conversations/conv_000164.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
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-      "overlap": false,
-      "utterance_id": "2412-153954",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
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-      "real_speaker_id": "2412",
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-      "start_time": 12.625841305468676,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
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-      "position_frames": 70665
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 18.89922778467503,
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-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 25.357084190373023,
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-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 30.74360597574243,
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-      "utterance_id": "2277-149897",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149897.flac |",
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-      "event_class": "Vacuum_cleaner",
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000165.json b/conversations/conv_000165.json
deleted file mode 100644
index 82ce89463fb833eb0062dcb8ef548d80f277069b..0000000000000000000000000000000000000000
--- a/conversations/conv_000165.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302196.flac |",
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-      "utterance_id": "2078-142845",
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\ No newline at end of file
diff --git a/conversations/conv_000166.json b/conversations/conv_000166.json
deleted file mode 100644
index 9b86055db522c58c3fd23908332ddcdb356d52f5..0000000000000000000000000000000000000000
--- a/conversations/conv_000166.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/329896_17.wav",
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-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/362765_2.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/777/cough/0004.wav",
-      "duration": 0.96,
-      "start_time": 5.754225285436387,
-      "speaker_id": "777"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/777/cough/0023.wav",
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-      "start_time": 29.345650511510684,
-      "speaker_id": "777"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000167.json b/conversations/conv_000167.json
deleted file mode 100644
index 30ea71a7917987e27acae70ad10252142a010ca8..0000000000000000000000000000000000000000
--- a/conversations/conv_000167.json
+++ /dev/null
@@ -1,165 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "2035-147961",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.592983451504751,
-      "end_time": 7.877083095608461,
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-      "utterance_id": "2277-149896",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149896.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 8.049247109516106,
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-      "overlap": true,
-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
-      "real_speaker_id": "2035",
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-      "speaker_id": 0,
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-      "overlap": true,
-      "utterance_id": "2035-147961",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 60836
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 18.488450389793098,
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-      "overlap": false,
-      "utterance_id": "2277-149874",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 24.728358765078813,
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-      "start_frame": 395653,
-      "duration_frames": 48538,
-      "overlap": false,
-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 29.07972027542049,
-      "end_time": 32.0,
-      "duration": 2.9202797245795082,
-      "start_frame": 465275,
-      "duration_frames": 46724,
-      "overlap": false,
-      "utterance_id": "7850-111771",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-111771.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/417995.wav",
-      "duration": 1.5200278209310794,
-      "start_time": 29.3731580076845
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-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/152532.wav",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2035/cough/0027.wav",
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-    {
-      "event_class": "laugh",
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-      "duration": 0.98,
-      "start_time": 8.09847901029101,
-      "speaker_id": "2277"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2035/laugh/0020.wav",
-      "duration": 0.9482303522171263,
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-    {
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-      "duration": 0.72,
-      "start_time": 17.821907985943174,
-      "speaker_id": "2035"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2035/cough/0010.wav",
-      "duration": 1.3230276081861163,
-      "start_time": 27.889931166902393,
-      "speaker_id": "2035"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000168.json b/conversations/conv_000168.json
deleted file mode 100644
index 280aaeab9ddb7dc1ccb362678a583a613dc77629..0000000000000000000000000000000000000000
--- a/conversations/conv_000168.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "5895-34629",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 6.409482682787324,
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-      "utterance_id": "6241-66616",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
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-      "utterance_id": "6241-66616",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 91793
-    },
-    {
-      "segment_id": "seg0003",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 79125
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
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-      "duration_frames": 61319,
-      "overlap": false,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
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-      "duration": 4.90774472404167,
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-      "duration_frames": 78523,
-      "overlap": false,
-      "utterance_id": "5895-34622",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34622.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/140454.wav",
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-  ],
-  "foreground_events": [
-    {
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/347708.wav",
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-      "event_class": "Electric_shaver_toothbrush",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6241/laugh/0009.wav",
-      "duration": 1.16,
-      "start_time": 16.13260424224718,
-      "speaker_id": "6241"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/laugh/0012.wav",
-      "duration": 1.758520404739703,
-      "start_time": 18.94755999292167,
-      "speaker_id": "5895"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/cough/0011.wav",
-      "duration": 0.5345800876362035,
-      "start_time": 26.546035634296068,
-      "speaker_id": "5895"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000169.json b/conversations/conv_000169.json
deleted file mode 100644
index 803ba3ca9ebe67c82b9a53e1168beb34e8597f9e..0000000000000000000000000000000000000000
--- a/conversations/conv_000169.json
+++ /dev/null
@@ -1,108 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
-    },
-    {
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-      "real_speaker_id": "5338",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 69040
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-      "segment_id": "seg0003",
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-      "start_time": 18.183291765832514,
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-      "utterance_id": "5338-24615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24615.flac |",
-      "real_speaker_id": "5338",
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
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-      "real_speaker_id": "1272",
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-      "segment_id": "seg0005",
-      "speaker_id": 2,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 162425
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/371920_1.wav",
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-      "event_class": "Dog",
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-  ],
-  "paralinguistic_events": []
-}
\ No newline at end of file
diff --git a/conversations/conv_000170.json b/conversations/conv_000170.json
deleted file mode 100644
index 7656863ef01d3699c46148b377e7e321097aa59e..0000000000000000000000000000000000000000
--- a/conversations/conv_000170.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "speaker_id": 0,
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-      "utterance_id": "5338-24640",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
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-      "utterance_id": "2428-83699",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
-      "real_speaker_id": "2428",
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-      "segment_id": "seg0002",
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-      "utterance_id": "6295-64301",
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-    {
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-      "duration_frames": 94703,
-      "overlap": false,
-      "utterance_id": "6295-64301",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 67277
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 26.78516241506821,
-      "end_time": 32.0,
-      "duration": 5.214837584931789,
-      "start_frame": 428562,
-      "duration_frames": 83437,
-      "overlap": false,
-      "utterance_id": "6295-64301",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 161980
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/347708.wav",
-      "duration": 4.539027641049831,
-      "start_time": 10.324257434493381
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-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/406067_1.wav",
-      "duration": 2.5541043083900226,
-      "start_time": 13.377746019224737
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6295/laugh/0049.wav",
-      "duration": 1.7405148224703852,
-      "start_time": 13.884447497002542,
-      "speaker_id": "6295"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000171.json b/conversations/conv_000171.json
deleted file mode 100644
index 395d90f64c0249d5a57c52484ac83cf42d89c50e..0000000000000000000000000000000000000000
--- a/conversations/conv_000171.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.683282495396117,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.877897621868393,
-      "duration": 3.877897621868393,
-      "start_frame": 0,
-      "duration_frames": 62046,
-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.4177947555264625,
-      "end_time": 9.81686891008496,
-      "duration": 5.399074154558498,
-      "start_frame": 70684,
-      "duration_frames": 86385,
-      "overlap": false,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 10.853678611889947,
-      "end_time": 14.281089207532787,
-      "duration": 3.427410595642841,
-      "start_frame": 173658,
-      "duration_frames": 54838,
-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 62046
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 15.39006789763815,
-      "end_time": 21.046569827586296,
-      "duration": 5.656501929948147,
-      "start_frame": 246241,
-      "duration_frames": 90504,
-      "overlap": false,
-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 21.99074441521417,
-      "end_time": 26.099567414370462,
-      "duration": 4.10882299915629,
-      "start_frame": 351851,
-      "duration_frames": 65741,
-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 116884
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.113011707564578,
-      "end_time": 31.683282495396117,
-      "duration": 4.57027078783154,
-      "start_frame": 433808,
-      "duration_frames": 73124,
-      "overlap": false,
-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/347708.wav",
-      "duration": 2.5001651779796075,
-      "start_time": 7.2916797576205346
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-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/366512.wav",
-      "duration": 2.035928709727867,
-      "start_time": 18.716624410971477
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/laugh/0045.wav",
-      "duration": 0.5535664235422146,
-      "start_time": 4.1622858968938115,
-      "speaker_id": "3000"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/cough/0000.wav",
-      "duration": 0.4442298497346464,
-      "start_time": 3.2256961020957395,
-      "speaker_id": "3000"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0026.wav",
-      "duration": 1.4403977463947863,
-      "start_time": 9.8418174300247,
-      "speaker_id": "1988"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/cough/0052.wav",
-      "duration": 1.0448498716020709,
-      "start_time": 14.245747761410708,
-      "speaker_id": "1988"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000172.json b/conversations/conv_000172.json
deleted file mode 100644
index 80b21047d25ab294696710fc5d7816047808e5b2..0000000000000000000000000000000000000000
--- a/conversations/conv_000172.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.771974677647506,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.4994596065530463,
-      "duration": 3.4994596065530463,
-      "start_frame": 0,
-      "duration_frames": 55991,
-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.290525404131406,
-      "end_time": 9.313505597723132,
-      "duration": 5.022980193591726,
-      "start_frame": 68648,
-      "duration_frames": 80367,
-      "overlap": false,
-      "utterance_id": "6241-66616",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 9.418756118925046,
-      "end_time": 14.386978661884005,
-      "duration": 4.968222542958958,
-      "start_frame": 150700,
-      "duration_frames": 79491,
-      "overlap": false,
-      "utterance_id": "6241-61943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 15.410297928568854,
-      "end_time": 19.725442058702747,
-      "duration": 4.315144130133892,
-      "start_frame": 246564,
-      "duration_frames": 69042,
-      "overlap": false,
-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 20.062344213782243,
-      "end_time": 23.585260047574124,
-      "duration": 3.522915833791883,
-      "start_frame": 320997,
-      "duration_frames": 56366,
-      "overlap": false,
-      "utterance_id": "6241-61946",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 23.88137672723289,
-      "end_time": 29.519535838130352,
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-      "start_frame": 382102,
-      "duration_frames": 90210,
-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 55991
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 30.18045628400478,
-      "end_time": 31.771974677647506,
-      "duration": 1.5915183936427262,
-      "start_frame": 482887,
-      "duration_frames": 25464,
-      "overlap": true,
-      "utterance_id": "6241-61946",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 56366
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/35872.wav",
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/2503.wav",
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/laugh/0000.wav",
-      "duration": 1.22,
-      "start_time": 0,
-      "speaker_id": "2078"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6241/laugh/0037.wav",
-      "duration": 0.8056907529498825,
-      "start_time": 3.3375551319365844,
-      "speaker_id": "6241"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6241/cough/0043.wav",
-      "duration": 0.9690292514331191,
-      "start_time": 8.331731346552008,
-      "speaker_id": "6241"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7850/cough/0012.wav",
-      "duration": 1.02,
-      "start_time": 19.834660323762026,
-      "speaker_id": "7850"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000173.json b/conversations/conv_000173.json
deleted file mode 100644
index db53ac80b40ba23051e5875232df946afe07885f..0000000000000000000000000000000000000000
--- a/conversations/conv_000173.json
+++ /dev/null
@@ -1,115 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.602307953578808,
-      "duration": 5.602307953578808,
-      "start_frame": 0,
-      "duration_frames": 89636,
-      "overlap": false,
-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.961488091165891,
-      "end_time": 9.467204222771896,
-      "duration": 3.505716131606005,
-      "start_frame": 95383,
-      "duration_frames": 56091,
-      "overlap": false,
-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 9.656924482951801,
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-      "duration": 5.418634527586012,
-      "start_frame": 154510,
-      "duration_frames": 86698,
-      "overlap": false,
-      "utterance_id": "5895-34615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 14.56471033949708,
-      "end_time": 20.763580025772946,
-      "duration": 6.198869686275868,
-      "start_frame": 233035,
-      "duration_frames": 99181,
-      "overlap": true,
-      "utterance_id": "84-121123",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121123.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 21.679705094094796,
-      "end_time": 27.81886835482867,
-      "duration": 6.139163260733874,
-      "start_frame": 346875,
-      "duration_frames": 98226,
-      "overlap": false,
-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 89636
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 28.471884683026698,
-      "end_time": 32.0,
-      "duration": 3.5281153169733024,
-      "start_frame": 455550,
-      "duration_frames": 56449,
-      "overlap": false,
-      "utterance_id": "5895-34622",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34622.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/428863.wav",
-      "duration": 12.245592116781488,
-      "start_time": 12.569782516295355
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/74723_1.wav",
-      "duration": 1.397437641723356,
-      "start_time": 1.1100539265368428
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-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/54058.wav",
-      "duration": 0.6683219954648526,
-      "start_time": 14.278704175957248
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-  ],
-  "paralinguistic_events": []
-}
\ No newline at end of file
diff --git a/conversations/conv_000174.json b/conversations/conv_000174.json
deleted file mode 100644
index c26b7eac118c5215e85ca49b15eabc7b1e81ca31..0000000000000000000000000000000000000000
--- a/conversations/conv_000174.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 5.354813290422294,
-      "duration": 5.354813290422294,
-      "start_frame": 0,
-      "duration_frames": 85677,
-      "overlap": false,
-      "utterance_id": "7850-111771",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-111771.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 5.859327779686422,
-      "end_time": 10.90695091612211,
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-      "start_frame": 93749,
-      "duration_frames": 80761,
-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
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-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 11.239848866153785,
-      "end_time": 15.396708150931506,
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-      "duration_frames": 66509,
-      "overlap": false,
-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0003",
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-      "start_time": 16.56047595047479,
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-      "utterance_id": "7850-73752",
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-      "speaker_id": "6241"
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\ No newline at end of file
diff --git a/conversations/conv_000175.json b/conversations/conv_000175.json
deleted file mode 100644
index cde428ebe998b4762eea12f087ee9ad1da293754..0000000000000000000000000000000000000000
--- a/conversations/conv_000175.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
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-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
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-  "foreground_events": [
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\ No newline at end of file
diff --git a/conversations/conv_000176.json b/conversations/conv_000176.json
deleted file mode 100644
index 5f9e5fe1ca9c18497cc0fb67810fb1270056ba4c..0000000000000000000000000000000000000000
--- a/conversations/conv_000176.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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\ No newline at end of file
diff --git a/conversations/conv_000177.json b/conversations/conv_000177.json
deleted file mode 100644
index b2bafcf4ef953487cbc8f34f537b81858630fea4..0000000000000000000000000000000000000000
--- a/conversations/conv_000177.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
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\ No newline at end of file
diff --git a/conversations/conv_000178.json b/conversations/conv_000178.json
deleted file mode 100644
index acff79bcfe0500bae703a34b8ff9a415f56d08d0..0000000000000000000000000000000000000000
--- a/conversations/conv_000178.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
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-      "speaker_id": "2428"
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\ No newline at end of file
diff --git a/conversations/conv_000179.json b/conversations/conv_000179.json
deleted file mode 100644
index 5b230b9ae59256d69d49805cfae59bf48188639e..0000000000000000000000000000000000000000
--- a/conversations/conv_000179.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.64061884587522,
-  "num_speakers": 3,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302196.flac |",
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-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
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-      "start_time": 17.088449284127925,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 82678
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-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 21.245635356814166,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
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-      "start_time": 27.865572348317297,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
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-      "position_frames": 0
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-  "background_events": [
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-      "start_time": 0,
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\ No newline at end of file
diff --git a/conversations/conv_000180.json b/conversations/conv_000180.json
deleted file mode 100644
index 0f3c5face67be5b627168a7260d267a48ffb6f95..0000000000000000000000000000000000000000
--- a/conversations/conv_000180.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.669342072228552,
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\ No newline at end of file
diff --git a/conversations/conv_000181.json b/conversations/conv_000181.json
deleted file mode 100644
index c2cc1b647e22c6bec0d3aeecca9673a7cee8b584..0000000000000000000000000000000000000000
--- a/conversations/conv_000181.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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\ No newline at end of file
diff --git a/conversations/conv_000182.json b/conversations/conv_000182.json
deleted file mode 100644
index 6920188473756cd522ab948928b51838604fe4d5..0000000000000000000000000000000000000000
--- a/conversations/conv_000182.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.54557505273083,
-  "num_speakers": 3,
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-      "real_speaker_id": "652",
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-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
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-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 29.10479551702079,
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 106896
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/64014.wav",
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/laugh/0020.wav",
-      "duration": 1.24,
-      "start_time": 0,
-      "speaker_id": "652"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/777/laugh/0024.wav",
-      "duration": 1.0351350187965414,
-      "start_time": 27.896106960501413,
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-    {
-      "event_class": "cough",
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-      "duration": 0.92,
-      "start_time": 30.23890337642531,
-      "speaker_id": "777"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000183.json b/conversations/conv_000183.json
deleted file mode 100644
index 83b3fac08a15d02823a9fe352bd48232b01fa2c0..0000000000000000000000000000000000000000
--- a/conversations/conv_000183.json
+++ /dev/null
@@ -1,108 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.77539764759223,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.033090753493852,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147965.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
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-      "speaker_id": 2,
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-      "utterance_id": "8297-275154",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275154.flac |",
-      "real_speaker_id": "8297",
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-    },
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 17.85306350827808,
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-      "utterance_id": "1993-147149",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147149.flac |",
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-      "position_frames": 0
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
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-      "segment_id": "seg0005",
-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147149.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 81643
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/327387.wav",
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-  "paralinguistic_events": []
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\ No newline at end of file
diff --git a/conversations/conv_000184.json b/conversations/conv_000184.json
deleted file mode 100644
index 6dfb320626ffe923c7f5d698214f44307ad29be3..0000000000000000000000000000000000000000
--- a/conversations/conv_000184.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
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-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 102615
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "utterance_id": "3536-8226",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 27.292767059532913,
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-      "utterance_id": "2277-149897",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149897.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
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-  "background_events": [
-    {
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-  "foreground_events": [
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-      "event_class": "Dishes",
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\ No newline at end of file
diff --git a/conversations/conv_000185.json b/conversations/conv_000185.json
deleted file mode 100644
index 16a92a6f18a7fe08d0f338c0035dbca1c745bfba..0000000000000000000000000000000000000000
--- a/conversations/conv_000185.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.2,
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-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
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-      "segment_id": "seg0003",
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-      "position_frames": 86424
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
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-      "utterance_id": "2035-147960",
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-  "background_events": [
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\ No newline at end of file
diff --git a/conversations/conv_000186.json b/conversations/conv_000186.json
deleted file mode 100644
index 1a7ffa59db5955ebc8338157e6651e3b7aec6fa8..0000000000000000000000000000000000000000
--- a/conversations/conv_000186.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-      "duration": 0.92,
-      "start_time": 0,
-      "speaker_id": "7850"
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-      "event_class": "cough",
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-      "start_time": 3.19959688264907,
-      "speaker_id": "251"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000187.json b/conversations/conv_000187.json
deleted file mode 100644
index 285cc4dda6e54ecbe4be2327486b668766544cb9..0000000000000000000000000000000000000000
--- a/conversations/conv_000187.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
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-      "start_time": 6.596582125002557,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
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-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 19.003436196591256,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 97280
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-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.324173729729804,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 92372
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
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-      "position_frames": 155240
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-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/146200_0.wav",
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-      "event_class": "Dog",
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-  "paralinguistic_events": [
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-      "speaker_id": "1919"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000188.json b/conversations/conv_000188.json
deleted file mode 100644
index 556b9517dc060a5c28ea2a52224e6f2eaca1b0be..0000000000000000000000000000000000000000
--- a/conversations/conv_000188.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 1,
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-      "utterance_id": "1462-170145",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
-      "real_speaker_id": "1462",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
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-      "speaker_id": 1,
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-      "utterance_id": "1462-170142",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170142.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
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-      "speaker_id": 0,
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-      "utterance_id": "8842-302201",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
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-  ],
-  "background_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000189.json b/conversations/conv_000189.json
deleted file mode 100644
index e90a62c8c36c34000a025d3f67a33b23dd3dab85..0000000000000000000000000000000000000000
--- a/conversations/conv_000189.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93306.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000190.json b/conversations/conv_000190.json
deleted file mode 100644
index a1a4a01a4ac53af72efbac32a28e1b9be90971d3..0000000000000000000000000000000000000000
--- a/conversations/conv_000190.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    }
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-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/235566.wav",
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-      "event_class": "Frying",
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-      "event_class": "cough",
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-      "duration": 0.620934497274494,
-      "start_time": 30.0847193831732,
-      "speaker_id": "6241"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000191.json b/conversations/conv_000191.json
deleted file mode 100644
index 4e03e4d1c1d0cb4aa6802352e399812f5b92ec68..0000000000000000000000000000000000000000
--- a/conversations/conv_000191.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 6.659690304221724,
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-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 6.9171340284326215,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
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-      "overlap": false,
-      "utterance_id": "5694-64029",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64029.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
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-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 17.73024089257771,
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-      "utterance_id": "5694-64025",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.715717184694633,
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-      "duration": 6.1256365892558495,
-      "start_frame": 363451,
-      "duration_frames": 98010,
-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 29.37839263337099,
-      "end_time": 32.0,
-      "duration": 2.6216073666290107,
-      "start_frame": 470054,
-      "duration_frames": 41945,
-      "overlap": false,
-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/64007.wav",
-      "duration": 0.6496145124716554,
-      "start_time": 28.407762674971767
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-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/352266.wav",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/laugh/0013.wav",
-      "duration": 1.8,
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-    {
-      "event_class": "cough",
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2902/laugh/0007.wav",
-      "duration": 0.972598812891371,
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-      "speaker_id": "2902"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000192.json b/conversations/conv_000192.json
deleted file mode 100644
index b8862543a41c128230efc87f5def5eca51e3814b..0000000000000000000000000000000000000000
--- a/conversations/conv_000192.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.534977995973995,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93306.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
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-      "start_time": 9.012597986040031,
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-      "utterance_id": "6345-93306",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93306.flac |",
-      "real_speaker_id": "6345",
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-      "segment_id": "seg0003",
-      "speaker_id": 2,
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-      "overlap": true,
-      "utterance_id": "8842-302196",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302196.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 18.683011700017108,
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-      "utterance_id": "8842-302201",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
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-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 24.26987160567606,
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-      "utterance_id": "6345-93302",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93302.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 31.375424442383064,
-      "end_time": 32.0,
-      "duration": 0.6245755576169358,
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-      "utterance_id": "6345-93306",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93306.flac |",
-      "real_speaker_id": "6345",
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/72558_7.wav",
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-  "paralinguistic_events": [
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-      "duration": 1.0732548557014723,
-      "start_time": 17.562051356452145,
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-    {
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-      "speaker_id": "6345"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000193.json b/conversations/conv_000193.json
deleted file mode 100644
index bfd3154bdde552a7a6b7bb4ce249b16a0b3ea25d..0000000000000000000000000000000000000000
--- a/conversations/conv_000193.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "start_frame": 0,
-      "duration_frames": 89271,
-      "overlap": false,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 6.476376302239851,
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-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 0
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-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 89271
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 19.2951872374641,
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-      "duration_frames": 55871,
-      "overlap": true,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
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-    },
-    {
-      "segment_id": "seg0004",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
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-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.966257097048587,
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-      "start_frame": 447460,
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-      "overlap": false,
-      "utterance_id": "2803-161169",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-161169.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/2503.wav",
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-  "paralinguistic_events": [
-    {
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-    {
-      "event_class": "laugh",
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0000.wav",
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-      "speaker_id": "1988"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2803/laugh/0040.wav",
-      "duration": 1.32,
-      "start_time": 26.51187449366387,
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-    },
-    {
-      "event_class": "cough",
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-      "duration": 1.02,
-      "start_time": 30.98,
-      "speaker_id": "2803"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000194.json b/conversations/conv_000194.json
deleted file mode 100644
index d1cdd00bf56023f1c9e59767426649e544993905..0000000000000000000000000000000000000000
--- a/conversations/conv_000194.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.91101020874908,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 6.200641655822178,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
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-      "segment_id": "seg0002",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 82202
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 17.52990391812783,
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-      "utterance_id": "5536-43363",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43363.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 23.145402319474353,
-      "end_time": 27.189811056776353,
-      "duration": 4.044408737301999,
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-      "overlap": true,
-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 28.40359742019218,
-      "end_time": 31.91101020874908,
-      "duration": 3.5074127885568975,
-      "start_frame": 454457,
-      "duration_frames": 56118,
-      "overlap": false,
-      "utterance_id": "5536-43363",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43363.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 97715
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/271460.wav",
-      "duration": 16.848412698412698,
-      "start_time": 4.6211662221560115
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/59513_11.wav",
-      "duration": 0.31777777777777777,
-      "start_time": 12.145713158462716
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/laugh/0045.wav",
-      "duration": 1.2394768367275932,
-      "start_time": 14.715074274362287,
-      "speaker_id": "2078"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/cough/0019.wav",
-      "duration": 1.1542947070847664,
-      "start_time": 8.870650320990949,
-      "speaker_id": "2078"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/84/cough/0020.wav",
-      "duration": 0.3625335943318039,
-      "start_time": 22.647949877995433,
-      "speaker_id": "84"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5536/laugh/0000.wav",
-      "duration": 0.8300188979770782,
-      "start_time": 30.55117909535972,
-      "speaker_id": "5536"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000195.json b/conversations/conv_000195.json
deleted file mode 100644
index c84311ae46ad85aa9df3fac35fcae37b9e063df6..0000000000000000000000000000000000000000
--- a/conversations/conv_000195.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.488775956778958,
-      "duration": 5.488775956778958,
-      "start_frame": 0,
-      "duration_frames": 87820,
-      "overlap": false,
-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.72943948312136,
-      "end_time": 10.466741849662345,
-      "duration": 4.737302366540985,
-      "start_frame": 91671,
-      "duration_frames": 75796,
-      "overlap": false,
-      "utterance_id": "84-121123",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121123.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 10.863158315755339,
-      "end_time": 14.862418990655849,
-      "duration": 3.99926067490051,
-      "start_frame": 173810,
-      "duration_frames": 63988,
-      "overlap": false,
-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 87820
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 15.375708286062633,
-      "end_time": 21.095450843341865,
-      "duration": 5.7197425572792335,
-      "start_frame": 246011,
-      "duration_frames": 91515,
-      "overlap": false,
-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 21.486846370100313,
-      "end_time": 26.94578640675707,
-      "duration": 5.458940036656755,
-      "start_frame": 343789,
-      "duration_frames": 87343,
-      "overlap": false,
-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 27.964185475012982,
-      "end_time": 32.0,
-      "duration": 4.035814524987018,
-      "start_frame": 447426,
-      "duration_frames": 64573,
-      "overlap": false,
-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 91515
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/213889_0.wav",
-      "duration": 2.249795918367347,
-      "start_time": 17.794128951305357
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-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/72558_1.wav",
-      "duration": 0.32839002267573697,
-      "start_time": 5.902486907365311
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2902/cough/0016.wav",
-      "duration": 1.1838695787971394,
-      "start_time": 14.906557197223659,
-      "speaker_id": "2902"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/84/cough/0038.wav",
-      "duration": 1.08,
-      "start_time": 19.35480363220344,
-      "speaker_id": "84"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/laugh/0057.wav",
-      "duration": 1.34,
-      "start_time": 19.93115448830838,
-      "speaker_id": "652"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/cough/0069.wav",
-      "duration": 0.8558929745805695,
-      "start_time": 20.559540167769082,
-      "speaker_id": "652"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/84/cough/0010.wav",
-      "duration": 1.0798512350778235,
-      "start_time": 30.920148764922175,
-      "speaker_id": "84"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000196.json b/conversations/conv_000196.json
deleted file mode 100644
index c60f52a5ea75ba230842df66589a103142a8edb5..0000000000000000000000000000000000000000
--- a/conversations/conv_000196.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 5.357162487881321,
-      "duration": 5.357162487881321,
-      "start_frame": 0,
-      "duration_frames": 85714,
-      "overlap": false,
-      "utterance_id": "2412-153947",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 5.8065907393495255,
-      "end_time": 10.149388367258332,
-      "duration": 4.342797627908807,
-      "start_frame": 92905,
-      "duration_frames": 69484,
-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 10.265291539896666,
-      "end_time": 14.122523894429452,
-      "duration": 3.8572323545327873,
-      "start_frame": 164244,
-      "duration_frames": 61715,
-      "overlap": false,
-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 14.23291496018757,
-      "end_time": 19.66196359542716,
-      "duration": 5.429048635239591,
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-      "duration_frames": 86864,
-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 69484
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 20.686173132733966,
-      "end_time": 25.182965941475707,
-      "duration": 4.496792808741743,
-      "start_frame": 330978,
-      "duration_frames": 71948,
-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 25.673617119817223,
-      "end_time": 30.79659944781222,
-      "duration": 5.122982327994999,
-      "start_frame": 410777,
-      "duration_frames": 81967,
-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 156348
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 31.38600710181057,
-      "end_time": 32.0,
-      "duration": 0.61399289818943,
-      "start_frame": 502176,
-      "duration_frames": 9823,
-      "overlap": false,
-      "utterance_id": "2412-153947",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 85714
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/213889_5.wav",
-      "duration": 1.7417913832199547,
-      "start_time": 12.361952777369723
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-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/371615_2.wav",
-      "duration": 1.6518890619173052,
-      "start_time": 6.518149037619826
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/cough/0025.wav",
-      "duration": 0.82,
-      "start_time": 8.40282071097319,
-      "speaker_id": "3853"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/laugh/0010.wav",
-      "duration": 1.26,
-      "start_time": 19.697614812097306,
-      "speaker_id": "3853"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/laugh/0025.wav",
-      "duration": 1.18,
-      "start_time": 19.439804414201372,
-      "speaker_id": "3000"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/cough/0046.wav",
-      "duration": 0.8567366277171449,
-      "start_time": 19.72716537651912,
-      "speaker_id": "3000"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/cough/0029.wav",
-      "duration": 0.3152727380279046,
-      "start_time": 31.549001850867523,
-      "speaker_id": "2412"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000197.json b/conversations/conv_000197.json
deleted file mode 100644
index 4e8e999674c11e603d19071785950e2d3ba45c6c..0000000000000000000000000000000000000000
--- a/conversations/conv_000197.json
+++ /dev/null
@@ -1,103 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 30.890081681651154,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 4.7835321013748535,
-      "duration": 4.7835321013748535,
-      "start_frame": 0,
-      "duration_frames": 76536,
-      "overlap": false,
-      "utterance_id": "7976-105575",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 5.684986852722499,
-      "end_time": 12.103477846953375,
-      "duration": 6.418490994230876,
-      "start_frame": 90959,
-      "duration_frames": 102695,
-      "overlap": false,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 12.555074965656221,
-      "end_time": 18.566290973336205,
-      "duration": 6.011216007679984,
-      "start_frame": 200881,
-      "duration_frames": 96179,
-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 19.352795971923616,
-      "end_time": 24.351816361050304,
-      "duration": 4.999020389126688,
-      "start_frame": 309644,
-      "duration_frames": 79984,
-      "overlap": false,
-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 24.559817692418275,
-      "end_time": 30.890081681651154,
-      "duration": 6.330263989232877,
-      "start_frame": 392957,
-      "duration_frames": 101284,
-      "overlap": false,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 102695
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/347708.wav",
-      "duration": 4.210684881263517,
-      "start_time": 5.338261996067626
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/laugh/0016.wav",
-      "duration": 1.64,
-      "start_time": 4.915542047276055,
-      "speaker_id": "7976"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/laugh/0024.wav",
-      "duration": 0.8768887452006906,
-      "start_time": 16.281410609085583,
-      "speaker_id": "3853"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000198.json b/conversations/conv_000198.json
deleted file mode 100644
index 8bc8e23c23b0af69bd30caac9ac545eb11275f7b..0000000000000000000000000000000000000000
--- a/conversations/conv_000198.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 4.506951859090582,
-      "duration": 4.506951859090582,
-      "start_frame": 0,
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-      "overlap": false,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "position_frames": 77689
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-      "segment_id": "seg0005",
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-      "start_time": 27.875411309629257,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
-      "real_speaker_id": "5694",
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
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-      "speaker_id": "5694"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000199.json b/conversations/conv_000199.json
deleted file mode 100644
index 0efaaf39ea7a75eb31e715e5d446b840c2361bef..0000000000000000000000000000000000000000
--- a/conversations/conv_000199.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "speaker_id": 0,
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-      "overlap": false,
-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.759154706215375,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-286674.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.91228403952003,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
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-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 82704
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-    {
-      "segment_id": "seg0005",
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-      "utterance_id": "7850-286674",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-286674.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 74057
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-  "background_events": [
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-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366511.wav",
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-  "foreground_events": [
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-  "paralinguistic_events": [
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-      "speaker_id": "652"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000200.json b/conversations/conv_000200.json
deleted file mode 100644
index f087226c6200160cf08a7eae1e3564e257193e2f..0000000000000000000000000000000000000000
--- a/conversations/conv_000200.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "5536-43358",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
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-      "real_speaker_id": "2086",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 78619
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "duration": 4.606726591544689,
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-      "duration_frames": 73707,
-      "overlap": false,
-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 55602
-    }
-  ],
-  "background_events": [
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-      "event_class": "Vacuum_cleaner",
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-      "event_class": "Electric_shaver_toothbrush",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/laugh/0016.wav",
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-      "start_time": 6.429905780448375,
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-    {
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/laugh/0034.wav",
-      "duration": 1.12,
-      "start_time": 18.62738189856038,
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-    {
-      "event_class": "cough",
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-      "speaker_id": "1272"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000201.json b/conversations/conv_000201.json
deleted file mode 100644
index b4ea231dbe87a85a76f72a5821cae2d5ad58fd0a..0000000000000000000000000000000000000000
--- a/conversations/conv_000201.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.314512237117643,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
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-      "utterance_id": "3536-8226",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
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-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
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-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/251/laugh/0053.wav",
-      "duration": 1.2947946362550165,
-      "start_time": 28.853810543975154,
-      "speaker_id": "251"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000202.json b/conversations/conv_000202.json
deleted file mode 100644
index 411aee7c79d22fb23b783d8e272a1ba3dc6f838b..0000000000000000000000000000000000000000
--- a/conversations/conv_000202.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 5.368676279563359,
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-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.493578787592771,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
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-      "position_frames": 0
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-      "speaker_id": 0,
-      "start_time": 11.294288342774054,
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-      "utterance_id": "5895-34615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 85898
-    },
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-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 21.388667090991962,
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-      "duration": 4.150858296090796,
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-      "duration_frames": 66413,
-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 83413
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-      "segment_id": "seg0005",
-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/239639.wav",
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-      "event_class": "laugh",
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-      "event_class": "cough",
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-      "speaker_id": "2902"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000203.json b/conversations/conv_000203.json
deleted file mode 100644
index 6210b934cb641c4105a50fe3f233502e6eaac33b..0000000000000000000000000000000000000000
--- a/conversations/conv_000203.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.918860443638017,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147965.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.07569493776233,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
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-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/353124.wav",
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-  "paralinguistic_events": [
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-    {
-      "event_class": "cough",
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-      "speaker_id": "1993"
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-    {
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-      "event_class": "cough",
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-      "speaker_id": "3081"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000204.json b/conversations/conv_000204.json
deleted file mode 100644
index 47ec6e9ed6b1fafce2d6b2d5a4e75a5f7e302be3..0000000000000000000000000000000000000000
--- a/conversations/conv_000204.json
+++ /dev/null
@@ -1,94 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 31.56349281192253,
-  "num_speakers": 3,
-  "overlap_rate": 0.4,
-  "segments": [
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-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
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-      "overlap": true,
-      "utterance_id": "84-121123",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121123.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
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-  "foreground_events": [
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-  "paralinguistic_events": []
-}
\ No newline at end of file
diff --git a/conversations/conv_000205.json b/conversations/conv_000205.json
deleted file mode 100644
index f56c313edfe4cd9adef4c948a9ea022e4bac3615..0000000000000000000000000000000000000000
--- a/conversations/conv_000205.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.75528938539754,
-  "num_speakers": 3,
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
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-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000206.json b/conversations/conv_000206.json
deleted file mode 100644
index 2e45506b3e4556778673a00cd137b8748288c2b9..0000000000000000000000000000000000000000
--- a/conversations/conv_000206.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.489169843409684,
-      "duration": 5.489169843409684,
-      "start_frame": 0,
-      "duration_frames": 87826,
-      "overlap": false,
-      "utterance_id": "6319-64726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 5.618562804816237,
-      "end_time": 11.040967360943174,
-      "duration": 5.422404556126937,
-      "start_frame": 89897,
-      "duration_frames": 86758,
-      "overlap": false,
-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 12.21035770062301,
-      "end_time": 15.557417844701304,
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-      "overlap": false,
-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 15.819362163944268,
-      "end_time": 19.36159374752122,
-      "duration": 3.5422315835769496,
-      "start_frame": 253109,
-      "duration_frames": 56675,
-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 19.98036956560182,
-      "end_time": 26.33976939744973,
-      "duration": 6.359399831847908,
-      "start_frame": 319685,
-      "duration_frames": 101750,
-      "overlap": false,
-      "utterance_id": "6319-64726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 87826
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.052178354896842,
-      "end_time": 30.549662944446787,
-      "duration": 3.497484589549943,
-      "start_frame": 432834,
-      "duration_frames": 55959,
-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 56675
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 31.08346930338557,
-      "end_time": 32.0,
-      "duration": 0.91653069661443,
-      "start_frame": 497335,
-      "duration_frames": 14664,
-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 112634
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/59513_1.wav",
-      "duration": 0.9632426303854875,
-      "start_time": 18.805349606213806
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-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/377982.wav",
-      "duration": 2.4674868259295537,
-      "start_time": 9.626168265942962
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6319/laugh/0035.wav",
-      "duration": 0.9548187053343553,
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-      "speaker_id": "6319"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6319/laugh/0027.wav",
-      "duration": 0.5601931836173837,
-      "start_time": 11.227316589825826,
-      "speaker_id": "6319"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2902/cough/0017.wav",
-      "duration": 0.3043250878659446,
-      "start_time": 30.689517903513867,
-      "speaker_id": "2902"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2902/laugh/0025.wav",
-      "duration": 1.1,
-      "start_time": 29.833235456103388,
-      "speaker_id": "2902"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000207.json b/conversations/conv_000207.json
deleted file mode 100644
index 7f77ebf9f4dd6fc6de28f309b00eb5950ac03017..0000000000000000000000000000000000000000
--- a/conversations/conv_000207.json
+++ /dev/null
@@ -1,108 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 3.7764409278509836,
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-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 3.8864872059953672,
-      "end_time": 9.83608702724121,
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 10.156170150194418,
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-      "duration_frames": 66955,
-      "overlap": true,
-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 60423
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 15.296941128650534,
-      "end_time": 20.58141306096288,
-      "duration": 5.284471932312347,
-      "start_frame": 244751,
-      "duration_frames": 84551,
-      "overlap": false,
-      "utterance_id": "6295-64301",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 21.49442862028333,
-      "end_time": 26.87009251055726,
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-      "duration_frames": 86010,
-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 95193
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 27.63967857124128,
-      "end_time": 32.0,
-      "duration": 4.36032142875872,
-      "start_frame": 442234,
-      "duration_frames": 69765,
-      "overlap": false,
-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 127378
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/325254_2.wav",
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-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/99181_1.wav",
-      "duration": 1.3461301152956682,
-      "start_time": 25.714047316618313
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-  ],
-  "paralinguistic_events": []
-}
\ No newline at end of file
diff --git a/conversations/conv_000208.json b/conversations/conv_000208.json
deleted file mode 100644
index ca29a142583b8736e866dd2977edac2e3be84ae3..0000000000000000000000000000000000000000
--- a/conversations/conv_000208.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 5.0462730005802605,
-      "duration": 5.0462730005802605,
-      "start_frame": 0,
-      "duration_frames": 80740,
-      "overlap": false,
-      "utterance_id": "1993-147964",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 6.537044654069625,
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-      "duration_frames": 72254,
-      "overlap": false,
-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
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-      "position_frames": 0
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-      "overlap": false,
-      "utterance_id": "1993-147966",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147966.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 18.534362416693803,
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-      "utterance_id": "6319-57405",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
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-      "position_frames": 0
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-    {
-      "segment_id": "seg0004",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147966.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 98621
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-    {
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-      "utterance_id": "6319-57405",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 75759
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-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366511.wav",
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-  "foreground_events": [
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-    {
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-      "event_class": "cough",
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6319/cough/0021.wav",
-      "duration": 0.6482405946078689,
-      "start_time": 31.35175940539213,
-      "speaker_id": "6319"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000209.json b/conversations/conv_000209.json
deleted file mode 100644
index a9f38a77826d3692223bb2e1438aa685ede77946..0000000000000000000000000000000000000000
--- a/conversations/conv_000209.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "utterance_id": "1919-142785",
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-      "utterance_id": "5536-43363",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43363.flac |",
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-  "background_events": [
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-      "speaker_id": "2035"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000210.json b/conversations/conv_000210.json
deleted file mode 100644
index 35835a0bffa8433a7f82b58eaafcbcdf4a56b4af..0000000000000000000000000000000000000000
--- a/conversations/conv_000210.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.561522845753643,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
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\ No newline at end of file
diff --git a/conversations/conv_000211.json b/conversations/conv_000211.json
deleted file mode 100644
index 6b261edc970537c82dcf74ac872d1285eadf6330..0000000000000000000000000000000000000000
--- a/conversations/conv_000211.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
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-}
\ No newline at end of file
diff --git a/conversations/conv_000212.json b/conversations/conv_000212.json
deleted file mode 100644
index a6586b93c7889e5aa53326b60603f01bd599688a..0000000000000000000000000000000000000000
--- a/conversations/conv_000212.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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\ No newline at end of file
diff --git a/conversations/conv_000213.json b/conversations/conv_000213.json
deleted file mode 100644
index 98f29f9331f50cd10f9cf621affb9cc47ac1bb18..0000000000000000000000000000000000000000
--- a/conversations/conv_000213.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/2503.wav",
-      "duration": 2.3350991690782625,
-      "start_time": 2.6193689190542755
-    }
-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/174/cough/0031.wav",
-      "duration": 1.32,
-      "start_time": 16.524238684225097,
-      "speaker_id": "174"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/laugh/0039.wav",
-      "duration": 0.92,
-      "start_time": 27.31589493773253,
-      "speaker_id": "2078"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/cough/0034.wav",
-      "duration": 0.6780249038576289,
-      "start_time": 27.681330492543793,
-      "speaker_id": "2078"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000214.json b/conversations/conv_000214.json
deleted file mode 100644
index ae6c6e0132ed05a755bc8b0ec25f90d2f20b2846..0000000000000000000000000000000000000000
--- a/conversations/conv_000214.json
+++ /dev/null
@@ -1,94 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 31.27884222110827,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 6.384767458434377,
-      "duration": 6.384767458434377,
-      "start_frame": 0,
-      "duration_frames": 102156,
-      "overlap": false,
-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 7.195031908181096,
-      "end_time": 12.694585434574066,
-      "duration": 5.499553526392971,
-      "start_frame": 115120,
-      "duration_frames": 87992,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 14.064451029819722,
-      "end_time": 17.32009932326955,
-      "duration": 3.255648293449828,
-      "start_frame": 225031,
-      "duration_frames": 52090,
-      "overlap": false,
-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 17.680015904220372,
-      "end_time": 24.18170723388028,
-      "duration": 6.501691329659909,
-      "start_frame": 282880,
-      "duration_frames": 104027,
-      "overlap": false,
-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 25.10436491322124,
-      "end_time": 31.27884222110827,
-      "duration": 6.174477307887029,
-      "start_frame": 401669,
-      "duration_frames": 98791,
-      "overlap": false,
-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 102156
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/417995.wav",
-      "duration": 4.826702148317963,
-      "start_time": 1.5142380246413936
-    },
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/417995.wav",
-      "duration": 4.673366642534682,
-      "start_time": 15.244881542561588
-    }
-  ],
-  "paralinguistic_events": []
-}
\ No newline at end of file
diff --git a/conversations/conv_000215.json b/conversations/conv_000215.json
deleted file mode 100644
index 3f9c4941ef3c70325945797f9470908c40b13aee..0000000000000000000000000000000000000000
--- a/conversations/conv_000215.json
+++ /dev/null
@@ -1,103 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 31.305744337548973,
-  "num_speakers": 3,
-  "overlap_rate": 0.2,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 6.937573411281859,
-      "duration": 6.937573411281859,
-      "start_frame": 0,
-      "duration_frames": 111001,
-      "overlap": false,
-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 7.268738062446454,
-      "end_time": 13.390731160387254,
-      "duration": 6.1219930979408,
-      "start_frame": 116299,
-      "duration_frames": 97951,
-      "overlap": true,
-      "utterance_id": "1272-141231",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 14.629456975977025,
-      "end_time": 19.304268928445133,
-      "duration": 4.674811952468106,
-      "start_frame": 234071,
-      "duration_frames": 74796,
-      "overlap": false,
-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 19.76430989673854,
-      "end_time": 26.391872623698127,
-      "duration": 6.6275627269595905,
-      "start_frame": 316228,
-      "duration_frames": 106041,
-      "overlap": false,
-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 26.834462755928946,
-      "end_time": 31.305744337548973,
-      "duration": 4.471281581620028,
-      "start_frame": 429351,
-      "duration_frames": 71540,
-      "overlap": false,
-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 74796
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/87621.wav",
-      "duration": 3.461061471883892,
-      "start_time": 3.2823235210841406
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2035/cough/0022.wav",
-      "duration": 0.46926110528428383,
-      "start_time": 7.058274511971783,
-      "speaker_id": "2035"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2902/laugh/0015.wav",
-      "duration": 1.28,
-      "start_time": 19.95112597878274,
-      "speaker_id": "2902"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000216.json b/conversations/conv_000216.json
deleted file mode 100644
index 1a83147b68179f1a35f7ab0e6bcd240c21884514..0000000000000000000000000000000000000000
--- a/conversations/conv_000216.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 4.199704731952859,
-      "duration": 4.199704731952859,
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-      "overlap": false,
-      "utterance_id": "5536-43359",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.448603973898241,
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-      "duration_frames": 67163,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 9.013351535344453,
-      "end_time": 14.558032732847003,
-      "duration": 5.544681197502551,
-      "start_frame": 144213,
-      "duration_frames": 88714,
-      "overlap": false,
-      "utterance_id": "5536-43358",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 15.249952062445793,
-      "end_time": 21.293055542221158,
-      "duration": 6.043103479775365,
-      "start_frame": 243999,
-      "duration_frames": 96689,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 67163
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 21.736507866206846,
-      "end_time": 27.254588637543016,
-      "duration": 5.5180807713361695,
-      "start_frame": 347784,
-      "duration_frames": 88289,
-      "overlap": false,
-      "utterance_id": "5536-43363",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43363.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 28.018390569285373,
-      "end_time": 32.0,
-      "duration": 3.9816094307146273,
-      "start_frame": 448294,
-      "duration_frames": 63705,
-      "overlap": false,
-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/352266.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5536/laugh/0023.wav",
-      "duration": 1.36,
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-      "speaker_id": "5536"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5536/cough/0037.wav",
-      "duration": 1.1,
-      "start_time": 25.358646432054876,
-      "speaker_id": "5536"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000217.json b/conversations/conv_000217.json
deleted file mode 100644
index 2382695a1729086f00f96eb2708e4739e87089fe..0000000000000000000000000000000000000000
--- a/conversations/conv_000217.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.19859731368696,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.610753922152961,
-      "duration": 5.610753922152961,
-      "start_frame": 0,
-      "duration_frames": 89772,
-      "overlap": false,
-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.94579662660055,
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-      "duration": 6.664721547845249,
-      "start_frame": 95132,
-      "duration_frames": 106635,
-      "overlap": false,
-      "utterance_id": "1993-147964",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 13.065894303593026,
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-      "duration": 3.0267401475597477,
-      "start_frame": 209054,
-      "duration_frames": 48427,
-      "overlap": false,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.533992627948876,
-      "end_time": 22.136508021304067,
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-      "duration_frames": 89640,
-      "overlap": false,
-      "utterance_id": "5694-64038",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.70537459568886,
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-      "overlap": true,
-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 29.779454639359667,
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-      "duration_frames": 22706,
-      "overlap": true,
-      "utterance_id": "5694-64038",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 89640
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/41634.wav",
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-      "event_class": "Alarm_bell_ringing",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0021.wav",
-      "duration": 1.38,
-      "start_time": 21.037250339550944,
-      "speaker_id": "1988"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000218.json b/conversations/conv_000218.json
deleted file mode 100644
index e2922b7b42eba51b7cd690826089de43e0b479a4..0000000000000000000000000000000000000000
--- a/conversations/conv_000218.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 7.2941365347201925,
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-      "utterance_id": "1462-170142",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170142.flac |",
-      "real_speaker_id": "1462",
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-    {
-      "segment_id": "seg0002",
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-      "start_time": 11.224810598910992,
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
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-      "utterance_id": "1462-170142",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170142.flac |",
-      "real_speaker_id": "1462",
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-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 31.352619601295764,
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 156362
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-  "background_events": [],
-  "foreground_events": [
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-      "duration": 1.18,
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-      "speaker_id": "1462"
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-      "event_class": "laugh",
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-      "duration": 1.34,
-      "start_time": 23.390896428348892,
-      "speaker_id": "1462"
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/laugh/0000.wav",
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-      "start_time": 30.93710268639662,
-      "speaker_id": "3000"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000219.json b/conversations/conv_000219.json
deleted file mode 100644
index e568f7ac31d46cee5e497c8aeeff0e06db87bcf4..0000000000000000000000000000000000000000
--- a/conversations/conv_000219.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "start_time": 0.0,
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-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 5.790326457423466,
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-      "duration": 3.924787852887183,
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
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-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 85103
-    },
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 15.086601670818656,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 62796
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-      "segment_id": "seg0004",
-      "speaker_id": 2,
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-      "utterance_id": "3536-8226",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.634678417849262,
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 140186
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-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/371913_1.wav",
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-      "speaker_id": "777"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000220.json b/conversations/conv_000220.json
deleted file mode 100644
index d76b4ffbf55d0dcfe25e683dc3d45cc8919e86ef..0000000000000000000000000000000000000000
--- a/conversations/conv_000220.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
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-      "speaker_id": 2,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-161169.flac |",
-      "real_speaker_id": "2803",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
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-      "utterance_id": "2803-154320",
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-      "speaker_id": 0,
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-  "foreground_events": [
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-      "duration": 1.22,
-      "start_time": 21.077182837659006,
-      "speaker_id": "2412"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000221.json b/conversations/conv_000221.json
deleted file mode 100644
index f427ed3950ce2569fdde7774d15fb9921eb9c81a..0000000000000000000000000000000000000000
--- a/conversations/conv_000221.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.685739599619424,
-  "num_speakers": 2,
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-      "utterance_id": "5338-284437",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-284437.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
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-      "utterance_id": "7976-110124",
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-  "background_events": [],
-  "foreground_events": [
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-  "paralinguistic_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000222.json b/conversations/conv_000222.json
deleted file mode 100644
index 6bb64eda5465f0d077446f76f31db3382c5206ed..0000000000000000000000000000000000000000
--- a/conversations/conv_000222.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275154.flac |",
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-    {
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
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\ No newline at end of file
diff --git a/conversations/conv_000223.json b/conversations/conv_000223.json
deleted file mode 100644
index 003bef615f49c6dce105c50f35553748ab598d58..0000000000000000000000000000000000000000
--- a/conversations/conv_000223.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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\ No newline at end of file
diff --git a/conversations/conv_000224.json b/conversations/conv_000224.json
deleted file mode 100644
index 125fc1635e1a3a0ff9d236af785d56eac3289bf1..0000000000000000000000000000000000000000
--- a/conversations/conv_000224.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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\ No newline at end of file
diff --git a/conversations/conv_000225.json b/conversations/conv_000225.json
deleted file mode 100644
index 69901166ac096f5ec164cfde41d74ac7735f2284..0000000000000000000000000000000000000000
--- a/conversations/conv_000225.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302196.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000226.json b/conversations/conv_000226.json
deleted file mode 100644
index 6a67e23fd0514eca55fab28a3f85357cf9a367ae..0000000000000000000000000000000000000000
--- a/conversations/conv_000226.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
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-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000227.json b/conversations/conv_000227.json
deleted file mode 100644
index 78803fef63716974a8747d998782ea2c675c72dd..0000000000000000000000000000000000000000
--- a/conversations/conv_000227.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000228.json b/conversations/conv_000228.json
deleted file mode 100644
index 98a9fcb99fb463777c8f7922078bdbc88fbf5ade..0000000000000000000000000000000000000000
--- a/conversations/conv_000228.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000229.json b/conversations/conv_000229.json
deleted file mode 100644
index 5df2f0d1e4015977616ac87c7fa53bf156643d91..0000000000000000000000000000000000000000
--- a/conversations/conv_000229.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
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-      "start_time": 30.5765178374518,
-      "speaker_id": "3000"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000230.json b/conversations/conv_000230.json
deleted file mode 100644
index a975d97dd0354e645540c34c2c94c832ef58d1d7..0000000000000000000000000000000000000000
--- a/conversations/conv_000230.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 4.434836795393217,
-      "duration": 4.434836795393217,
-      "start_frame": 0,
-      "duration_frames": 70957,
-      "overlap": false,
-      "utterance_id": "6345-64257",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-64257.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.535734283750443,
-      "end_time": 10.386267033105284,
-      "duration": 5.85053274935484,
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-      "duration_frames": 93608,
-      "overlap": false,
-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 10.91937884776993,
-      "end_time": 15.577017426192073,
-      "duration": 4.657638578422143,
-      "start_frame": 174710,
-      "duration_frames": 74522,
-      "overlap": false,
-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.475330830255068,
-      "end_time": 20.5663863543338,
-      "duration": 4.091055524078735,
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-      "duration_frames": 65456,
-      "overlap": false,
-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 20.74571473966669,
-      "end_time": 25.28022655367375,
-      "duration": 4.53451181400706,
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-      "overlap": false,
-      "utterance_id": "6345-64257",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-64257.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 70957
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 26.121369129434456,
-      "end_time": 30.26812624809957,
-      "duration": 4.146757118665114,
-      "start_frame": 417941,
-      "duration_frames": 66348,
-      "overlap": false,
-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 74522
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 30.39836282080757,
-      "end_time": 32.0,
-      "duration": 1.60163717919243,
-      "start_frame": 486373,
-      "duration_frames": 25626,
-      "overlap": false,
-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 65456
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/366069.wav",
-      "duration": 24.86152269565352,
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-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/54062.wav",
-      "duration": 1.0819138444975973,
-      "start_time": 8.6844865060527
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-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/cough/0056.wav",
-      "duration": 0.9634080105168634,
-      "start_time": 10.393936843290366,
-      "speaker_id": "652"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/777/laugh/0024.wav",
-      "duration": 0.8531752184404147,
-      "start_time": 12.345709589771849,
-      "speaker_id": "777"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/laugh/0007.wav",
-      "duration": 1.0031928712117337,
-      "start_time": 19.000434365942574,
-      "speaker_id": "652"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000231.json b/conversations/conv_000231.json
deleted file mode 100644
index 5faf4525c340a3a0b19f50940169428268a6c35c..0000000000000000000000000000000000000000
--- a/conversations/conv_000231.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.931127256058029,
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-      "overlap": false,
-      "utterance_id": "1462-170145",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 4.562387412339813,
-      "end_time": 9.970512787948753,
-      "duration": 5.40812537560894,
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-      "overlap": false,
-      "utterance_id": "2803-161169",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-161169.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 11.061725889994722,
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-      "overlap": false,
-      "utterance_id": "7850-111771",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-111771.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 15.658207100891605,
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-      "overlap": false,
-      "utterance_id": "1462-170138",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170138.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 20.112330860724374,
-      "end_time": 24.384364030046196,
-      "duration": 4.272033169321822,
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-      "duration_frames": 68352,
-      "overlap": true,
-      "utterance_id": "7850-73752",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-73752.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 25.29598403745277,
-      "end_time": 32.0,
-      "duration": 6.704015962547231,
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-      "overlap": false,
-      "utterance_id": "1462-170142",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170142.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/341090_0.wav",
-      "duration": 1.2386954413484288,
-      "start_time": 27.110674742345733
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-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/417995.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/laugh/0003.wav",
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-      "start_time": 0,
-      "speaker_id": "1462"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2803/laugh/0003.wav",
-      "duration": 1.3,
-      "start_time": 10.142271750035889,
-      "speaker_id": "2803"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7850/cough/0045.wav",
-      "duration": 0.5058117875762913,
-      "start_time": 10.361893749552118,
-      "speaker_id": "7850"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000232.json b/conversations/conv_000232.json
deleted file mode 100644
index a6d736a2b4ddc817b4a560c541ba126941bc1f7c..0000000000000000000000000000000000000000
--- a/conversations/conv_000232.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
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-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
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-      "real_speaker_id": "2078",
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-    {
-      "segment_id": "seg0003",
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-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 23.1970291011436,
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 175374
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "duration": 3.27669578342039,
-      "start_frame": 459572,
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/588_1.wav",
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-  "paralinguistic_events": [
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-    {
-      "event_class": "laugh",
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-    {
-      "event_class": "laugh",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000233.json b/conversations/conv_000233.json
deleted file mode 100644
index 417015ca5655dbd73ae01e07ab318e6fd86ba2cf..0000000000000000000000000000000000000000
--- a/conversations/conv_000233.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 30.914950360175137,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "1462-170138",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170138.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
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-      "speaker_id": "652"
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-      "event_class": "laugh",
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-      "speaker_id": "3853"
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-      "start_time": 26.09042299240316,
-      "speaker_id": "652"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000234.json b/conversations/conv_000234.json
deleted file mode 100644
index 542347702b6f781e485353512e37b6a3999e407a..0000000000000000000000000000000000000000
--- a/conversations/conv_000234.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149896.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149896.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
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-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.92494658136341,
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
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-      "segment_id": "seg0005",
-      "speaker_id": 2,
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-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
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-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
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-}
\ No newline at end of file
diff --git a/conversations/conv_000235.json b/conversations/conv_000235.json
deleted file mode 100644
index 436ce84c9696dcfcd83b7106c91d28251045e736..0000000000000000000000000000000000000000
--- a/conversations/conv_000235.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
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-      "speaker_id": 0,
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\ No newline at end of file
diff --git a/conversations/conv_000236.json b/conversations/conv_000236.json
deleted file mode 100644
index 26bf316d2350894ae148ace6fecede8ad661ab8a..0000000000000000000000000000000000000000
--- a/conversations/conv_000236.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000237.json b/conversations/conv_000237.json
deleted file mode 100644
index f6ab8d86a46304163281df3376254b20182f2e98..0000000000000000000000000000000000000000
--- a/conversations/conv_000237.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/laugh/0026.wav",
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-    {
-      "event_class": "cough",
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/laugh/0039.wav",
-      "duration": 0.8710072355770917,
-      "start_time": 22.30405447003763,
-      "speaker_id": "3000"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/laugh/0041.wav",
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-      "start_time": 27.985847783911527,
-      "speaker_id": "3000"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000238.json b/conversations/conv_000238.json
deleted file mode 100644
index 6275ba762cede21f43bf767afe2a793a1b7a8179..0000000000000000000000000000000000000000
--- a/conversations/conv_000238.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
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-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 4.21957402864173,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
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-      "speaker_id": 0,
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-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 65190
-    },
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-      "speaker_id": 1,
-      "start_time": 24.767280703443273,
-      "end_time": 29.043370108125487,
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-      "overlap": true,
-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 30.527031222392555,
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-      "duration": 1.472968777607445,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 134370
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
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-    {
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0055.wav",
-      "duration": 1.24,
-      "start_time": 22.87683483979856,
-      "speaker_id": "1988"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000239.json b/conversations/conv_000239.json
deleted file mode 100644
index b9e41e836a071fe7ae32a87ded926fc65fadd4c5..0000000000000000000000000000000000000000
--- a/conversations/conv_000239.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 2,
-  "overlap_rate": 0.3333333333333333,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93302.flac |",
-      "real_speaker_id": "6345",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154320.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-64257.flac |",
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-      "position_frames": 0
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-      "real_speaker_id": "2803",
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-      "segment_id": "seg0004",
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-      "utterance_id": "2803-154328",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93302.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 82708
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
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-  "paralinguistic_events": [
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-      "speaker_id": "2803"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000240.json b/conversations/conv_000240.json
deleted file mode 100644
index 28d3ad9b7da6c2c7c80f427ad651d97d7321e2c8..0000000000000000000000000000000000000000
--- a/conversations/conv_000240.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.58595411061855,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
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-  "paralinguistic_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000241.json b/conversations/conv_000241.json
deleted file mode 100644
index 42b2ec458fc5c2de7f7051f5c0016a8ff4fb7cb9..0000000000000000000000000000000000000000
--- a/conversations/conv_000241.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
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-      "real_speaker_id": "251",
-      "position_frames": 0
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 26.54964071131601,
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-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/87621.wav",
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-  "foreground_events": [
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-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/213889_4.wav",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3536/laugh/0054.wav",
-      "duration": 0.9407643781394979,
-      "start_time": 3.377076981863039,
-      "speaker_id": "3536"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/174/laugh/0057.wav",
-      "duration": 0.7773876150637533,
-      "start_time": 19.909790875787195,
-      "speaker_id": "174"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/174/cough/0030.wav",
-      "duration": 1.1829944364606941,
-      "start_time": 15.437316059655004,
-      "speaker_id": "174"
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-      "start_time": 21.06646122376128,
-      "speaker_id": "251"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000242.json b/conversations/conv_000242.json
deleted file mode 100644
index 75706d4b7f03681fc0be8ff4fa52d80f082892e0..0000000000000000000000000000000000000000
--- a/conversations/conv_000242.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 8.065694157550455,
-      "end_time": 13.988483391072727,
-      "duration": 5.922789233522271,
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-      "duration_frames": 94764,
-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 109669
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 14.560494253391559,
-      "end_time": 21.18659062390222,
-      "duration": 6.626096370510663,
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-      "overlap": false,
-      "utterance_id": "6241-61943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 21.762602141533048,
-      "end_time": 27.258429165807396,
-      "duration": 5.495827024274347,
-      "start_frame": 348201,
-      "duration_frames": 87933,
-      "overlap": false,
-      "utterance_id": "2035-147961",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 27.402913549898592,
-      "end_time": 32.0,
-      "duration": 4.597086450101408,
-      "start_frame": 438446,
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-      "overlap": false,
-      "utterance_id": "6241-66616",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/331161.wav",
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-  "foreground_events": [
-    {
-      "event_class": "Cat",
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-      "duration": 2.105961582739515,
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-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2035/cough/0068.wav",
-      "duration": 1.16,
-      "start_time": 27.436776258018956,
-      "speaker_id": "2035"
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-    {
-      "event_class": "laugh",
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-      "duration": 1.14,
-      "start_time": 25.980613871551064,
-      "speaker_id": "6241"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000243.json b/conversations/conv_000243.json
deleted file mode 100644
index 6b63859d7a51486fe69fcf8896ff30896cc779ad..0000000000000000000000000000000000000000
--- a/conversations/conv_000243.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "2803-154328",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
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-      "utterance_id": "1272-135031",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-135031.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.943245970748084,
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-      "overlap": false,
-      "utterance_id": "2412-153954",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 21.038315436218483,
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-      "duration_frames": 75920,
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-      "utterance_id": "1272-141231",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
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-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 26.561524551459108,
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-      "duration": 5.438475448540892,
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-      "utterance_id": "2803-154328",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 73038
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-  "background_events": [],
-  "foreground_events": [
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/588_1.wav",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000244.json b/conversations/conv_000244.json
deleted file mode 100644
index a6ce8deb710253bab447c9826e9f359252941021..0000000000000000000000000000000000000000
--- a/conversations/conv_000244.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "utterance_id": "174-50561",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-50561.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
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-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0003",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
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-      "real_speaker_id": "3853",
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-      "segment_id": "seg0005",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-50561.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 71595
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-    {
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-      "speaker_id": 1,
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-      "speaker_id": "1919"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000245.json b/conversations/conv_000245.json
deleted file mode 100644
index 74e19be90699a53f4522acd15181719e15e112ef..0000000000000000000000000000000000000000
--- a/conversations/conv_000245.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.952674414449582,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.8807844446924444,
-      "duration": 3.8807844446924444,
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-      "utterance_id": "8842-302203",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302203.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 4.459733021668856,
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-      "utterance_id": "5694-64029",
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-      "real_speaker_id": "5694",
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-    {
-      "segment_id": "seg0002",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/379144_1.wav",
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-      "event_class": "Running_water",
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-      "duration": 1.18,
-      "start_time": 4.049666674480977,
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-      "event_class": "cough",
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-      "event_class": "laugh",
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-      "duration": 1.08,
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-      "speaker_id": "5694"
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-    {
-      "event_class": "cough",
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-      "duration": 0.9844257829814773,
-      "start_time": 30.29406986373048,
-      "speaker_id": "5694"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000246.json b/conversations/conv_000246.json
deleted file mode 100644
index 7db8c7b725de479ae010197fd9e7852647ae9c40..0000000000000000000000000000000000000000
--- a/conversations/conv_000246.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "speaker_id": 0,
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-      "overlap": false,
-      "utterance_id": "6241-66616",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.980954650541136,
-      "end_time": 10.30156814759604,
-      "duration": 3.3206134970549033,
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-      "overlap": false,
-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130726.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
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-      "utterance_id": "6241-61946",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 28.02104369183164,
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-      "overlap": false,
-      "utterance_id": "652-130726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130726.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 55983
-    }
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-  "background_events": [],
-  "foreground_events": [
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/352272.wav",
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-      "event_class": "Cat",
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-  "paralinguistic_events": [
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-      "speaker_id": "652"
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-      "speaker_id": "652"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000247.json b/conversations/conv_000247.json
deleted file mode 100644
index 464b5439f4eaec0c8daab8f860915f0a50ee7423..0000000000000000000000000000000000000000
--- a/conversations/conv_000247.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "1993-147966",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147966.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
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-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147149.flac |",
-      "real_speaker_id": "1993",
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-      "utterance_id": "3536-8226",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 80733
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366511.wav",
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-  "foreground_events": [
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1993/laugh/0027.wav",
-      "duration": 1.56,
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-      "speaker_id": "1993"
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-    {
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-    {
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-      "duration": 0.92,
-      "start_time": 31.08,
-      "speaker_id": "3536"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000248.json b/conversations/conv_000248.json
deleted file mode 100644
index 883c17116782c5be9e754ff28f0185e4dcd443d9..0000000000000000000000000000000000000000
--- a/conversations/conv_000248.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
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-    },
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
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-    {
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-      "utterance_id": "6345-93306",
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-      "position_frames": 0
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-  "background_events": [
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-  "foreground_events": [
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0055.wav",
-      "duration": 1.24,
-      "start_time": 30.521582441338477,
-      "speaker_id": "1988"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000249.json b/conversations/conv_000249.json
deleted file mode 100644
index 2987db7deed045f596f50e1020a812b6094ea69a..0000000000000000000000000000000000000000
--- a/conversations/conv_000249.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 3.7086371280173713,
-      "duration": 3.7086371280173713,
-      "start_frame": 0,
-      "duration_frames": 59338,
-      "overlap": false,
-      "utterance_id": "6345-93302",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93302.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 4.6000865281602294,
-      "end_time": 10.030118047942203,
-      "duration": 5.4300315197819735,
-      "start_frame": 73601,
-      "duration_frames": 86880,
-      "overlap": false,
-      "utterance_id": "2277-149896",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149896.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 10.55245032531078,
-      "end_time": 16.65295199317933,
-      "duration": 6.100501667868549,
-      "start_frame": 168839,
-      "duration_frames": 97608,
-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 16.483085355617334,
-      "end_time": 21.806442088907488,
-      "duration": 5.323356733290155,
-      "start_frame": 263729,
-      "duration_frames": 85173,
-      "overlap": true,
-      "utterance_id": "6345-93306",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93306.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 23.24576230785199,
-      "end_time": 29.131151580910966,
-      "duration": 5.885389273058976,
-      "start_frame": 371932,
-      "duration_frames": 94166,
-      "overlap": false,
-      "utterance_id": "6345-93306",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93306.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 85173
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 30.221027955422485,
-      "end_time": 32.0,
-      "duration": 1.7789720445775146,
-      "start_frame": 483536,
-      "duration_frames": 28463,
-      "overlap": false,
-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366510.wav",
-      "duration": 10.552063551460297,
-      "start_time": 13.783534226513122
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/329896_2.wav",
-      "duration": 0.686780045351474,
-      "start_time": 22.60047316938352
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-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/35021_0.wav",
-      "duration": 4.467619047619047,
-      "start_time": 2.8564893948530616
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6345/laugh/0048.wav",
-      "duration": 1.1577037029423922,
-      "start_time": 0,
-      "speaker_id": "6345"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6345/cough/0009.wav",
-      "duration": 1.0,
-      "start_time": 0,
-      "speaker_id": "6345"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6345/laugh/0002.wav",
-      "duration": 1.1152069785821621,
-      "start_time": 15.073613038796672,
-      "speaker_id": "6345"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6345/cough/0035.wav",
-      "duration": 1.2527127302819445,
-      "start_time": 21.89144411445928,
-      "speaker_id": "6345"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000250.json b/conversations/conv_000250.json
deleted file mode 100644
index 40e9eee93b9449e3bea26a754a5c6a748f2d965d..0000000000000000000000000000000000000000
--- a/conversations/conv_000250.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 6.292473293484729,
-      "duration": 6.292473293484729,
-      "start_frame": 0,
-      "duration_frames": 100679,
-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 7.069880359174892,
-      "end_time": 12.529564840149245,
-      "duration": 5.459684480974353,
-      "start_frame": 113118,
-      "duration_frames": 87354,
-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 12.925665886789922,
-      "end_time": 16.1218978253336,
-      "duration": 3.1962319385436793,
-      "start_frame": 206810,
-      "duration_frames": 51139,
-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 100679
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.026308942305583,
-      "end_time": 19.69942552209134,
-      "duration": 3.6731165797857557,
-      "start_frame": 256420,
-      "duration_frames": 58769,
-      "overlap": true,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 87354
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 20.482450748869567,
-      "end_time": 24.699625628312,
-      "duration": 4.2171748794424335,
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-      "duration_frames": 67474,
-      "overlap": true,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 151818
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 25.422453851736385,
-      "end_time": 32.0,
-      "duration": 6.577546148263615,
-      "start_frame": 406759,
-      "duration_frames": 105240,
-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 146123
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/233645_1.wav",
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-      "start_time": 0.4018080217872456
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/cough/0043.wav",
-      "duration": 0.5250877893825081,
-      "start_time": 19.74397869737473,
-      "speaker_id": "3170"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000251.json b/conversations/conv_000251.json
deleted file mode 100644
index f19087cc294279f9cf52a8fb62841d02531e36be..0000000000000000000000000000000000000000
--- a/conversations/conv_000251.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.2,
-  "segments": [
-    {
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-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 4.5379194903939695,
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-      "overlap": false,
-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 4.536156780241539,
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-      "overlap": true,
-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 11.563138439541598,
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-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 72606
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 18.598313820712963,
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-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 89421
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 25.553992598188067,
-      "end_time": 32.0,
-      "duration": 6.446007401811933,
-      "start_frame": 408863,
-      "duration_frames": 103136,
-      "overlap": false,
-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 177634
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-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/132472.wav",
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-      "start_time": 11.606309134959371
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-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/341090_0.wav",
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-    {
-      "event_class": "Electric_shaver_toothbrush",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/84/laugh/0029.wav",
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-      "start_time": 18.213889027714412,
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/84/cough/0016.wav",
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/cough/0014.wav",
-      "duration": 1.22,
-      "start_time": 25.383746352585046,
-      "speaker_id": "2086"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000252.json b/conversations/conv_000252.json
deleted file mode 100644
index 258e58d49ef3d4fe710844f1d4d4b7f4565c4d75..0000000000000000000000000000000000000000
--- a/conversations/conv_000252.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
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-      "position_frames": 0
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-    {
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-      "start_time": 6.21950683074695,
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-      "utterance_id": "2412-153947",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
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-    {
-      "segment_id": "seg0002",
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-      "utterance_id": "7850-111771",
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-      "speaker_id": "2412"
-    }
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-}
\ No newline at end of file
diff --git a/conversations/conv_000253.json b/conversations/conv_000253.json
deleted file mode 100644
index 694c7f88ad2a8d9b915a15cf6b8610fc500722b8..0000000000000000000000000000000000000000
--- a/conversations/conv_000253.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
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-      "segment_id": "seg0003",
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-      "start_time": 16.317358458761525,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
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-      "position_frames": 76608
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
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-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "utterance_id": "2035-147961",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 96950
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
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-      "event_class": "cough",
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-      "speaker_id": "1673"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000254.json b/conversations/conv_000254.json
deleted file mode 100644
index 239f5ad1526327bf451b72ccb9fe503bee2f4c36..0000000000000000000000000000000000000000
--- a/conversations/conv_000254.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
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-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
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-      "start_time": 16.59168560665253,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 88980
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 21.286434211967507,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 77678
-    },
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-      "segment_id": "seg0005",
-      "speaker_id": 2,
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-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/35021_2.wav",
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-      "duration": 1.18,
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-      "speaker_id": "3752"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000255.json b/conversations/conv_000255.json
deleted file mode 100644
index 851a6c4cf118e3e90b53837a5cbddedad7b6c197..0000000000000000000000000000000000000000
--- a/conversations/conv_000255.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.5,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "real_speaker_id": "1673",
-      "position_frames": 0
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-      "real_speaker_id": "3170",
-      "position_frames": 87372
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-    {
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-}
\ No newline at end of file
diff --git a/conversations/conv_000256.json b/conversations/conv_000256.json
deleted file mode 100644
index c2149005403b54bf2bd37200f8ca7cbf97f860d4..0000000000000000000000000000000000000000
--- a/conversations/conv_000256.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
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-    {
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-  "paralinguistic_events": []
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\ No newline at end of file
diff --git a/conversations/conv_000257.json b/conversations/conv_000257.json
deleted file mode 100644
index 2ae0b1f37eea23dd38a70a0a3bf739a011bc1c86..0000000000000000000000000000000000000000
--- a/conversations/conv_000257.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
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-      "real_speaker_id": "174",
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-      "speaker_id": 0,
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-}
\ No newline at end of file
diff --git a/conversations/conv_000258.json b/conversations/conv_000258.json
deleted file mode 100644
index ecefb9f6d3d028d6fbb8ce33135eea9a732dcb70..0000000000000000000000000000000000000000
--- a/conversations/conv_000258.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
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-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
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-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 24.033098594683093,
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-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 145118
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
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-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
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-      "event_class": "Vacuum_cleaner",
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\ No newline at end of file
diff --git a/conversations/conv_000259.json b/conversations/conv_000259.json
deleted file mode 100644
index 20ce2db3a4bf40501f74b4f68bcdd84e644314ec..0000000000000000000000000000000000000000
--- a/conversations/conv_000259.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
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-      "real_speaker_id": "1462",
-      "position_frames": 53474
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 62393
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-      "segment_id": "seg0006",
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-  "background_events": [],
-  "foreground_events": [
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-      "speaker_id": "1462"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000260.json b/conversations/conv_000260.json
deleted file mode 100644
index dfd934ad24cd0566cdd996fbdf6f51ef20fe7b2b..0000000000000000000000000000000000000000
--- a/conversations/conv_000260.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "overlap": false,
-      "utterance_id": "5536-43359",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 7.228192547973283,
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-      "overlap": false,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-135031.flac |",
-      "real_speaker_id": "1272",
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-      "utterance_id": "5536-43363",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43363.flac |",
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-      "position_frames": 0
-    },
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-      "real_speaker_id": "1272",
-      "position_frames": 158110
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-  ],
-  "background_events": [
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-      "event_class": "Running_water",
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5536/laugh/0013.wav",
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-      "event_class": "laugh",
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-    {
-      "event_class": "cough",
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-      "duration": 1.0084624479007487,
-      "start_time": 29.2282835061748,
-      "speaker_id": "6313"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000261.json b/conversations/conv_000261.json
deleted file mode 100644
index bba08469d397c582c8a2027921be16d771134cb0..0000000000000000000000000000000000000000
--- a/conversations/conv_000261.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "utterance_id": "5536-43363",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43363.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
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-      "start_time": 4.156203810815663,
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-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
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-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 24.999371488448435,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
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-      "position_frames": 76858
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
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-      "duration": 0.7725151893197513,
-      "start_frame": 499639,
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-      "overlap": false,
-      "utterance_id": "5536-43359",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
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-  "background_events": [
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-      "speaker_id": "1919"
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-    {
-      "event_class": "cough",
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-      "start_time": 19.679342942864146,
-      "speaker_id": "1988"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000262.json b/conversations/conv_000262.json
deleted file mode 100644
index 84ebfe76d5d10e6ad13f58552efcbf194ec5849a..0000000000000000000000000000000000000000
--- a/conversations/conv_000262.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.297614821739394,
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-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93306.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302196.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 29.10596899638123,
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-      "duration_frames": 46304,
-      "overlap": false,
-      "utterance_id": "6345-93302",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93302.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/347708.wav",
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-      "speaker_id": "8842"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000263.json b/conversations/conv_000263.json
deleted file mode 100644
index f08c63e5807e99b1b7e7539016833801af08a0b8..0000000000000000000000000000000000000000
--- a/conversations/conv_000263.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.7084548203229,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
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-      "real_speaker_id": "8297",
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-      "segment_id": "seg0005",
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-      "real_speaker_id": "3000",
-      "position_frames": 140264
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/64011.wav",
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000264.json b/conversations/conv_000264.json
deleted file mode 100644
index bbf922abf58e082099ad25c50a04481a9a3f47a8..0000000000000000000000000000000000000000
--- a/conversations/conv_000264.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 31.434646802885858,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
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-    },
-    {
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-      "utterance_id": "1462-170138",
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-  "paralinguistic_events": [
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/laugh/0035.wav",
-      "duration": 1.36,
-      "start_time": 18.00782407141084,
-      "speaker_id": "1462"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/cough/0050.wav",
-      "duration": 1.2,
-      "start_time": 18.254647562253783,
-      "speaker_id": "1462"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000265.json b/conversations/conv_000265.json
deleted file mode 100644
index b56c4f3941a814522bbb730f1a03e52327f6cce8..0000000000000000000000000000000000000000
--- a/conversations/conv_000265.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.5126801212860967,
-      "duration": 3.5126801212860967,
-      "start_frame": 0,
-      "duration_frames": 56202,
-      "overlap": false,
-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 3.6818056448376475,
-      "end_time": 7.5525145331301164,
-      "duration": 3.870708888292469,
-      "start_frame": 58908,
-      "duration_frames": 61931,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
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-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 56202
-    },
-    {
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-      "speaker_id": 2,
-      "start_time": 14.162832827108188,
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-      "start_frame": 226605,
-      "duration_frames": 74123,
-      "overlap": true,
-      "utterance_id": "1462-170145",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 19.701012331358697,
-      "end_time": 26.489061229160132,
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-      "duration_frames": 108608,
-      "overlap": false,
-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.862367748706472,
-      "end_time": 32.0,
-      "duration": 4.137632251293528,
-      "start_frame": 445797,
-      "duration_frames": 66202,
-      "overlap": false,
-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 147549
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/215143.wav",
-      "duration": 15.284819237500002,
-      "start_time": 7.022323605864905
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/72558_0.wav",
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-      "start_time": 20.091365604866443
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-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/213889_1.wav",
-      "duration": 1.0652834467120182,
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/laugh/0009.wav",
-      "duration": 1.063634567760368,
-      "start_time": 7.5671652943342105,
-      "speaker_id": "422"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0015.wav",
-      "duration": 0.9518575439701408,
-      "start_time": 10.802249729329787,
-      "speaker_id": "1988"
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-    {
-      "event_class": "cough",
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-      "duration": 1.32,
-      "start_time": 10.009053409370221,
-      "speaker_id": "1988"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0022.wav",
-      "duration": 1.1989416374402468,
-      "start_time": 22.250015292777825,
-      "speaker_id": "1988"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/cough/0019.wav",
-      "duration": 0.6070071397820804,
-      "start_time": 31.39299286021792,
-      "speaker_id": "1988"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000266.json b/conversations/conv_000266.json
deleted file mode 100644
index 80ecdd0c45ab5d3a9e74eeb93f7738037474c526..0000000000000000000000000000000000000000
--- a/conversations/conv_000266.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
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-      "overlap": true,
-      "utterance_id": "2277-149874",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 14.739107527652088,
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-      "overlap": true,
-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 22.598405592865706,
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-      "utterance_id": "652-130726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130726.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 29.34828567630344,
-      "end_time": 32.0,
-      "duration": 2.6517143236965595,
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-      "duration_frames": 42427,
-      "overlap": false,
-      "utterance_id": "2277-149896",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149896.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/71936.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1919/laugh/0026.wav",
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-      "speaker_id": "1919"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1919/laugh/0003.wav",
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-      "speaker_id": "1919"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/laugh/0033.wav",
-      "duration": 0.92,
-      "start_time": 21.74709311017805,
-      "speaker_id": "652"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000267.json b/conversations/conv_000267.json
deleted file mode 100644
index 6520fad43b4757ba042b79af08925bc3302327af..0000000000000000000000000000000000000000
--- a/conversations/conv_000267.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
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-    {
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-      "speaker_id": 1,
-      "start_time": 21.369479667454655,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "position_frames": 143313
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "duration": 4.56769133387149,
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-      "overlap": false,
-      "utterance_id": "5895-34629",
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-      "real_speaker_id": "5895",
-      "position_frames": 0
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-  "background_events": [
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/417913.wav",
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-  "paralinguistic_events": [
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-    {
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-    {
-      "event_class": "cough",
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-      "duration": 0.84,
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-      "speaker_id": "3170"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000268.json b/conversations/conv_000268.json
deleted file mode 100644
index 50ee28b8d4fd66f5c1c7ca9ddd262b0bb6942a88..0000000000000000000000000000000000000000
--- a/conversations/conv_000268.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.67451118230131,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "position_frames": 0
-    },
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "start_frame": 420408,
-      "duration_frames": 86384,
-      "overlap": false,
-      "utterance_id": "7976-105575",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/35021_4.wav",
-      "duration": 2.6844897959183673,
-      "start_time": 14.620797941605943
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-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/232915.wav",
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-      "start_time": 11.06656927833181
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/laugh/0012.wav",
-      "duration": 0.6759348164647712,
-      "start_time": 3.8280923249228684,
-      "speaker_id": "7976"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/laugh/0024.wav",
-      "duration": 1.3558855492553206,
-      "start_time": 12.583608835230606,
-      "speaker_id": "3170"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3536/laugh/0046.wav",
-      "duration": 1.12,
-      "start_time": 18.28443709799233,
-      "speaker_id": "3536"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/cough/0059.wav",
-      "duration": 0.4340473466795658,
-      "start_time": 31.565952653320434,
-      "speaker_id": "7976"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000269.json b/conversations/conv_000269.json
deleted file mode 100644
index af37951607581fc373301b04ef832db33b1876be..0000000000000000000000000000000000000000
--- a/conversations/conv_000269.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.893875583128068,
-      "duration": 3.893875583128068,
-      "start_frame": 0,
-      "duration_frames": 62302,
-      "overlap": false,
-      "utterance_id": "5895-34615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 4.434497977372166,
-      "end_time": 9.03230743143039,
-      "duration": 4.597809454058225,
-      "start_frame": 70951,
-      "duration_frames": 73564,
-      "overlap": false,
-      "utterance_id": "7850-73752",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-73752.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 9.57891499285871,
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-      "duration_frames": 79150,
-      "overlap": false,
-      "utterance_id": "5895-34615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 62302
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 15.224378299146874,
-      "end_time": 20.768144816163133,
-      "duration": 5.543766517016259,
-      "start_frame": 243590,
-      "duration_frames": 88700,
-      "overlap": false,
-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 20.882075574241206,
-      "end_time": 24.47560246074204,
-      "duration": 3.5935268865008334,
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-      "duration_frames": 57496,
-      "overlap": false,
-      "utterance_id": "5895-34622",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34622.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 24.652767236847005,
-      "end_time": 29.152631674423386,
-      "duration": 4.499864437576381,
-      "start_frame": 394444,
-      "duration_frames": 71997,
-      "overlap": false,
-      "utterance_id": "7850-111771",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-111771.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 29.42417380494041,
-      "end_time": 32.0,
-      "duration": 2.575826195059591,
-      "start_frame": 470786,
-      "duration_frames": 41213,
-      "overlap": false,
-      "utterance_id": "5895-34622",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34622.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 57496
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/371913_1.wav",
-      "duration": 25.00498759319637,
-      "start_time": 4.945364775526213
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/59513_2.wav",
-      "duration": 0.5918140589569161,
-      "start_time": 25.055053305415235
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/laugh/0036.wav",
-      "duration": 0.829102369456072,
-      "start_time": 0,
-      "speaker_id": "5895"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/cough/0077.wav",
-      "duration": 0.82,
-      "start_time": 8.638986752069211,
-      "speaker_id": "5895"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7850/laugh/0025.wav",
-      "duration": 0.7706629979689533,
-      "start_time": 23.609745612726005,
-      "speaker_id": "7850"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/laugh/0038.wav",
-      "duration": 1.32,
-      "start_time": 30.452825631930168,
-      "speaker_id": "5895"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000270.json b/conversations/conv_000270.json
deleted file mode 100644
index 93f77d3d2c9a86a012e165331ef6b723eeac70bf..0000000000000000000000000000000000000000
--- a/conversations/conv_000270.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.451784469234186,
-      "duration": 5.451784469234186,
-      "start_frame": 0,
-      "duration_frames": 87228,
-      "overlap": false,
-      "utterance_id": "84-121123",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121123.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 6.203667080903311,
-      "end_time": 11.315762139243462,
-      "duration": 5.112095058340151,
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-      "duration_frames": 81793,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 10.760481079770752,
-      "end_time": 17.15385429055364,
-      "duration": 6.393373210782885,
-      "start_frame": 172167,
-      "duration_frames": 102293,
-      "overlap": true,
-      "utterance_id": "5895-34622",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34622.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 18.265397843539034,
-      "end_time": 22.060538026208476,
-      "duration": 3.7951401826694426,
-      "start_frame": 292246,
-      "duration_frames": 60722,
-      "overlap": false,
-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 21.97893282540685,
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-      "duration": 5.078512877435556,
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-      "duration_frames": 81256,
-      "overlap": true,
-      "utterance_id": "5895-34615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 28.047479101430746,
-      "end_time": 32.0,
-      "duration": 3.9525208985692544,
-      "start_frame": 448759,
-      "duration_frames": 63240,
-      "overlap": false,
-      "utterance_id": "84-121123",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121123.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 87228
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/56563_1.wav",
-      "duration": 2.29567930866667,
-      "start_time": 7.462657533143592
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-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/64005.wav",
-      "duration": 0.48210884353741496,
-      "start_time": 13.441205614064929
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/84/laugh/0055.wav",
-      "duration": 1.18,
-      "start_time": 0,
-      "speaker_id": "84"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3576/laugh/0028.wav",
-      "duration": 0.88,
-      "start_time": 11.595942174499955,
-      "speaker_id": "3576"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/cough/0028.wav",
-      "duration": 0.96,
-      "start_time": 17.335456616046482,
-      "speaker_id": "5895"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/84/laugh/0032.wav",
-      "duration": 1.16,
-      "start_time": 18.775476144168287,
-      "speaker_id": "84"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/laugh/0000.wav",
-      "duration": 0.6788133671209351,
-      "start_time": 21.1428717888113,
-      "speaker_id": "5895"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000271.json b/conversations/conv_000271.json
deleted file mode 100644
index 3b9bfe8f15a83e4fbe8de9671411b127518a48c6..0000000000000000000000000000000000000000
--- a/conversations/conv_000271.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 6.75088424398479,
-      "duration": 6.75088424398479,
-      "start_frame": 0,
-      "duration_frames": 108014,
-      "overlap": false,
-      "utterance_id": "5338-284437",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-284437.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 6.857273425294449,
-      "end_time": 11.929810130778103,
-      "duration": 5.072536705483654,
-      "start_frame": 109716,
-      "duration_frames": 81160,
-      "overlap": false,
-      "utterance_id": "5694-64029",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64029.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 12.030523630036225,
-      "end_time": 17.62347590550351,
-      "duration": 5.592952275467287,
-      "start_frame": 192488,
-      "duration_frames": 89487,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 17.89768014880557,
-      "end_time": 20.96833801555908,
-      "duration": 3.07065786675351,
-      "start_frame": 286362,
-      "duration_frames": 49130,
-      "overlap": false,
-      "utterance_id": "5338-284437",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-284437.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 108014
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 21.325896742871556,
-      "end_time": 26.523711496260002,
-      "duration": 5.197814753388446,
-      "start_frame": 341214,
-      "duration_frames": 83165,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 89487
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 26.85133743345999,
-      "end_time": 30.212702739811853,
-      "duration": 3.361365306351865,
-      "start_frame": 429621,
-      "duration_frames": 53781,
-      "overlap": false,
-      "utterance_id": "5338-24640",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 30.677815034717263,
-      "end_time": 32.0,
-      "duration": 1.3221849652827373,
-      "start_frame": 490845,
-      "duration_frames": 21154,
-      "overlap": false,
-      "utterance_id": "5338-24615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24615.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/140454.wav",
-      "duration": 16.143945578231293,
-      "start_time": 2.4019552700136635
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/417995.wav",
-      "duration": 1.172811457408696,
-      "start_time": 1.0233827729590148
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/laugh/0001.wav",
-      "duration": 1.32,
-      "start_time": 10.486475477397303,
-      "speaker_id": "422"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5338/cough/0016.wav",
-      "duration": 0.34929387360494224,
-      "start_time": 30.131712746861577,
-      "speaker_id": "5338"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000272.json b/conversations/conv_000272.json
deleted file mode 100644
index eca00b7dd95ab624ac422efafaa5f108bc05c80f..0000000000000000000000000000000000000000
--- a/conversations/conv_000272.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 4.162592791392242,
-      "duration": 4.162592791392242,
-      "start_frame": 0,
-      "duration_frames": 66601,
-      "overlap": false,
-      "utterance_id": "1993-147966",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147966.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
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\ No newline at end of file
diff --git a/conversations/conv_000273.json b/conversations/conv_000273.json
deleted file mode 100644
index e1a1e6e551dc06cc8a38be945acc82d5b9011e40..0000000000000000000000000000000000000000
--- a/conversations/conv_000273.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "6319-57405",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
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-      "position_frames": 0
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-      "segment_id": "seg0002",
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-      "start_time": 10.65530579472087,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
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-      "segment_id": "seg0003",
-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
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-      "position_frames": 0
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147965.flac |",
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-      "utterance_id": "1993-147149",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147149.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
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-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/371914_1.wav",
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-      "event_class": "Dishes",
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\ No newline at end of file
diff --git a/conversations/conv_000274.json b/conversations/conv_000274.json
deleted file mode 100644
index 203b5ccdd8be9905b9f89ccdf58a4e643d3de81c..0000000000000000000000000000000000000000
--- a/conversations/conv_000274.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 31.300714594861812,
-  "num_speakers": 2,
-  "overlap_rate": 0.4,
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
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-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
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-      "utterance_id": "2035-147961",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
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-  "foreground_events": [
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/22627_1.wav",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/laugh/0045.wav",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000275.json b/conversations/conv_000275.json
deleted file mode 100644
index deb2a7b31bf72ea8f0f0998079421b7356d8b2c1..0000000000000000000000000000000000000000
--- a/conversations/conv_000275.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 3,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43363.flac |",
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-      "segment_id": "seg0005",
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-      "utterance_id": "1673-143396",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000276.json b/conversations/conv_000276.json
deleted file mode 100644
index 38bfc37f4aa9fab253d48144ed35f0f5e1c25f22..0000000000000000000000000000000000000000
--- a/conversations/conv_000276.json
+++ /dev/null
@@ -1,103 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "utterance_id": "6319-64726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
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-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
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-      "speaker_id": 0,
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-      "utterance_id": "6319-57405",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 78127
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-  ],
-  "background_events": [
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-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/331161.wav",
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-  "foreground_events": [
-    {
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/91517.wav",
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-  "paralinguistic_events": [
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-      "event_class": "cough",
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-      "speaker_id": "6319"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000277.json b/conversations/conv_000277.json
deleted file mode 100644
index add6ae2b80783b491b51da6e9b220cf7a7281870..0000000000000000000000000000000000000000
--- a/conversations/conv_000277.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 4.165839858834495,
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-      "overlap": false,
-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.783173961755811,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
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-      "speaker_id": 0,
-      "start_time": 9.327091526855572,
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-      "overlap": false,
-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 13.902804429075463,
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-      "duration_frames": 77519,
-      "overlap": false,
-      "utterance_id": "5694-64025",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 19.47596087276346,
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-      "overlap": false,
-      "utterance_id": "2035-147961",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 25.853488890941453,
-      "end_time": 29.686244788916685,
-      "duration": 3.8327558979752334,
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-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 67324
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 30.534761951953215,
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-      "start_frame": 488556,
-      "duration_frames": 23443,
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-      "utterance_id": "2035-147961",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 93984
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/366510.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2035/laugh/0034.wav",
-      "duration": 1.46,
-      "start_time": 25.414461901602806,
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-    {
-      "event_class": "laugh",
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-      "duration": 1.28,
-      "start_time": 30.72,
-      "speaker_id": "2035"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000278.json b/conversations/conv_000278.json
deleted file mode 100644
index 5ec885b057fffe920fa8d8bce36498cd94e9cd1b..0000000000000000000000000000000000000000
--- a/conversations/conv_000278.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 0,
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.366204145743317,
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-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
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-      "segment_id": "seg0003",
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-      "utterance_id": "2803-161169",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-161169.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
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-      "segment_id": "seg0005",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 50304
-    }
-  ],
-  "background_events": [
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-  "foreground_events": [
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-    {
-      "event_class": "laugh",
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-      "start_time": 5.636300796075986,
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-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2803/cough/0055.wav",
-      "duration": 1.0878927065083153,
-      "start_time": 9.096849918719602,
-      "speaker_id": "2803"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3081/laugh/0073.wav",
-      "duration": 1.24,
-      "start_time": 29.053820678288503,
-      "speaker_id": "3081"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000279.json b/conversations/conv_000279.json
deleted file mode 100644
index 0dd6dddddf576fc7cd4cc55b997414797e6ef9c0..0000000000000000000000000000000000000000
--- a/conversations/conv_000279.json
+++ /dev/null
@@ -1,115 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.294328137599347,
-  "num_speakers": 2,
-  "overlap_rate": 0.5,
-  "segments": [
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-      "start_time": 0.0,
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-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
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-    {
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-      "utterance_id": "5895-34622",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34622.flac |",
-      "real_speaker_id": "5895",
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-      "real_speaker_id": "422",
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-      "segment_id": "seg0003",
-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
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-      "real_speaker_id": "422",
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-      "real_speaker_id": "5895",
-      "position_frames": 71596
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-  ],
-  "background_events": [
-    {
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/417913.wav",
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-  "foreground_events": [
-    {
-      "event_class": "Dishes",
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-      "duration": 1.4336793816617335,
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-  ],
-  "paralinguistic_events": []
-}
\ No newline at end of file
diff --git a/conversations/conv_000280.json b/conversations/conv_000280.json
deleted file mode 100644
index 0f194443454919c86f4c8b8de7f773cb4760ff34..0000000000000000000000000000000000000000
--- a/conversations/conv_000280.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.882726715034224,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "speaker_id": 1,
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-      "start_frame": 0,
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-      "utterance_id": "6345-64257",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-64257.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "utterance_id": "6345-93302",
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-      "speaker_id": "2086"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000281.json b/conversations/conv_000281.json
deleted file mode 100644
index 2fe383b6e6c62d0ff18339ca1a2a9b64c0e3f48c..0000000000000000000000000000000000000000
--- a/conversations/conv_000281.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.71055937543934,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
-      "real_speaker_id": "2277",
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-      "segment_id": "seg0005",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275155.flac |",
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-      "position_frames": 0
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-      "event_class": "Vacuum_cleaner",
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\ No newline at end of file
diff --git a/conversations/conv_000282.json b/conversations/conv_000282.json
deleted file mode 100644
index 3cb8b971451526c053e8d47915c917f87bc70b36..0000000000000000000000000000000000000000
--- a/conversations/conv_000282.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
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\ No newline at end of file
diff --git a/conversations/conv_000283.json b/conversations/conv_000283.json
deleted file mode 100644
index 55ea487351784041ab96eabde80c60e512751ecb..0000000000000000000000000000000000000000
--- a/conversations/conv_000283.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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\ No newline at end of file
diff --git a/conversations/conv_000284.json b/conversations/conv_000284.json
deleted file mode 100644
index f577e324516ce2df38d7a6db6cb7d6c91f902d4e..0000000000000000000000000000000000000000
--- a/conversations/conv_000284.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149896.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 74845
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-      "event_class": "Running_water",
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-      "speaker_id": "2035"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000285.json b/conversations/conv_000285.json
deleted file mode 100644
index 191182cd06feb6a8340fc15d2fb4f9cb6f787f08..0000000000000000000000000000000000000000
--- a/conversations/conv_000285.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 2,
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-      "position_frames": 0
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-      "start_time": 6.07879347430019,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
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-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 31.311904515456117,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
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-      "position_frames": 63209
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-  "background_events": [
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-      "event_class": "Electric_shaver_toothbrush",
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-      "speaker_id": "2078"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000286.json b/conversations/conv_000286.json
deleted file mode 100644
index 82c40c21a61418536b43d87e51a13e43dab4c8a4..0000000000000000000000000000000000000000
--- a/conversations/conv_000286.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 3,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
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-      "duration_frames": 75794,
-      "overlap": true,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 92340
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/347708.wav",
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-      "speaker_id": "1988"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000287.json b/conversations/conv_000287.json
deleted file mode 100644
index 6f9634d556a119575a113d255cb2ebdd5b52c1db..0000000000000000000000000000000000000000
--- a/conversations/conv_000287.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 3,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
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-  "paralinguistic_events": [
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000288.json b/conversations/conv_000288.json
deleted file mode 100644
index d0d5f79a7f14ee279bb21f3f064226bfa79e023f..0000000000000000000000000000000000000000
--- a/conversations/conv_000288.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000289.json b/conversations/conv_000289.json
deleted file mode 100644
index a0ce24fc2018d5434102c8fcd7e616de778c7739..0000000000000000000000000000000000000000
--- a/conversations/conv_000289.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
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-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000290.json b/conversations/conv_000290.json
deleted file mode 100644
index 460d9461494071434445da60dba5b2eba74d6156..0000000000000000000000000000000000000000
--- a/conversations/conv_000290.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
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-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000291.json b/conversations/conv_000291.json
deleted file mode 100644
index 439559ea15e7e8c5d93634a7f71b6b145699f1e8..0000000000000000000000000000000000000000
--- a/conversations/conv_000291.json
+++ /dev/null
@@ -1,159 +0,0 @@
-{
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
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-  "background_events": [
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-      "event_class": "Blender",
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-      "speaker_id": "7976"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000292.json b/conversations/conv_000292.json
deleted file mode 100644
index 4ade51e32d1571cd7e65985b11a1674ebdc8ee61..0000000000000000000000000000000000000000
--- a/conversations/conv_000292.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 0
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\ No newline at end of file
diff --git a/conversations/conv_000293.json b/conversations/conv_000293.json
deleted file mode 100644
index a5371a4191c68ee9a195f52b2524b6731cd69336..0000000000000000000000000000000000000000
--- a/conversations/conv_000293.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 5,
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-  "paralinguistic_events": [
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-      "speaker_id": "8842"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000294.json b/conversations/conv_000294.json
deleted file mode 100644
index 5d6a85e4a1168ae41e008a0dfdcfdc03e1c50c0e..0000000000000000000000000000000000000000
--- a/conversations/conv_000294.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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\ No newline at end of file
diff --git a/conversations/conv_000295.json b/conversations/conv_000295.json
deleted file mode 100644
index 196676ad534698b3371bb74a1550864352ddb17a..0000000000000000000000000000000000000000
--- a/conversations/conv_000295.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
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-  "num_speakers": 3,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
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-      "real_speaker_id": "6295",
-      "position_frames": 0
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-      "segment_id": "seg0005",
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-      "segment_id": "seg0006",
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-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
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-  "foreground_events": [
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-      "event_class": "Vacuum_cleaner",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000296.json b/conversations/conv_000296.json
deleted file mode 100644
index 222835fe5f8167f01b076a052fc778179d7245cf..0000000000000000000000000000000000000000
--- a/conversations/conv_000296.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "utterance_id": "6295-64301",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
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-      "speaker_id": 2,
-      "start_time": 15.62307512166339,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.155652495518225,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 81724
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 71970
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-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
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-      "start_time": 30.96,
-      "speaker_id": "3170"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000297.json b/conversations/conv_000297.json
deleted file mode 100644
index ccdec266dcb6bf0dd6e0e62f926560ce3603ea68..0000000000000000000000000000000000000000
--- a/conversations/conv_000297.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
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\ No newline at end of file
diff --git a/conversations/conv_000298.json b/conversations/conv_000298.json
deleted file mode 100644
index 49c73d3a4e227b904d8da0cb561a63430bcc1c08..0000000000000000000000000000000000000000
--- a/conversations/conv_000298.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000299.json b/conversations/conv_000299.json
deleted file mode 100644
index 0b6cf0e31e20c8a30f8f2e6d032dd04137578765..0000000000000000000000000000000000000000
--- a/conversations/conv_000299.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "utterance_id": "3536-8226",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
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-      "speaker_id": 0,
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-  "paralinguistic_events": [
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\ No newline at end of file
diff --git a/conversations/conv_000300.json b/conversations/conv_000300.json
deleted file mode 100644
index 41af2c61fcae3310161878d0cc0f75cff95d8027..0000000000000000000000000000000000000000
--- a/conversations/conv_000300.json
+++ /dev/null
@@ -1,115 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
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-      "speaker_id": 2,
-      "start_time": 6.2577915235719805,
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-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
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-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 18.869289101331873,
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-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 0
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 22.87801517019023,
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-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 96175
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-  "background_events": [
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-  ],
-  "paralinguistic_events": []
-}
\ No newline at end of file
diff --git a/conversations/conv_000301.json b/conversations/conv_000301.json
deleted file mode 100644
index ab59cf10b28422ea167eb9c8769d87fd28ab84bb..0000000000000000000000000000000000000000
--- a/conversations/conv_000301.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
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-      "segment_id": "seg0005",
-      "speaker_id": 1,
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-      "duration": 4.885831168651368,
-      "start_frame": 433826,
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-      "utterance_id": "1993-147966",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147966.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
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-  ],
-  "background_events": [
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-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/591.wav",
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-    {
-      "event_class": "cough",
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-      "speaker_id": "1993"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000302.json b/conversations/conv_000302.json
deleted file mode 100644
index 84b96d3b0d655a8c296caedbbf1e607c9468f224..0000000000000000000000000000000000000000
--- a/conversations/conv_000302.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "7850-286674",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-286674.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
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-      "real_speaker_id": "3170",
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-  "paralinguistic_events": [
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-      "speaker_id": "6241"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000303.json b/conversations/conv_000303.json
deleted file mode 100644
index 2421cf9caabd68911d6bb56317267d417098b370..0000000000000000000000000000000000000000
--- a/conversations/conv_000303.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.4660424376156,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "1272-135031",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-135031.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 4.116735575294297,
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-      "overlap": false,
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\ No newline at end of file
diff --git a/conversations/conv_000304.json b/conversations/conv_000304.json
deleted file mode 100644
index 65741e25125cb1b08df6e4f644b94ff414597433..0000000000000000000000000000000000000000
--- a/conversations/conv_000304.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000305.json b/conversations/conv_000305.json
deleted file mode 100644
index 5417994ba9e284254179adecdfe04798d07cf245..0000000000000000000000000000000000000000
--- a/conversations/conv_000305.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000306.json b/conversations/conv_000306.json
deleted file mode 100644
index 582b26a6f22d23e5e95af96e0272236171599637..0000000000000000000000000000000000000000
--- a/conversations/conv_000306.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
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-      "speaker_id": "174"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000307.json b/conversations/conv_000307.json
deleted file mode 100644
index 4bb96b128361e4ad18b5e24710d749ea5560ae57..0000000000000000000000000000000000000000
--- a/conversations/conv_000307.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000308.json b/conversations/conv_000308.json
deleted file mode 100644
index 1394725b34fa3c2fc6fb2823a1429235dc62cd56..0000000000000000000000000000000000000000
--- a/conversations/conv_000308.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-}
\ No newline at end of file
diff --git a/conversations/conv_000309.json b/conversations/conv_000309.json
deleted file mode 100644
index 985d207ca043d2f5359d7b4b62504d9beef739eb..0000000000000000000000000000000000000000
--- a/conversations/conv_000309.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
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\ No newline at end of file
diff --git a/conversations/conv_000310.json b/conversations/conv_000310.json
deleted file mode 100644
index 0d642ec39b58bd3eea11ee4c087e9fdcac339543..0000000000000000000000000000000000000000
--- a/conversations/conv_000310.json
+++ /dev/null
@@ -1,166 +0,0 @@
-{
-  "num_segments": 8,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.375,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
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-    {
-      "segment_id": "seg0007",
-      "speaker_id": 0,
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-      "start_frame": 483027,
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 159148
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-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/156110.wav",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3081/laugh/0075.wav",
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-      "speaker_id": "1919"
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-      "speaker_id": "1919"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000311.json b/conversations/conv_000311.json
deleted file mode 100644
index d15e938b655ae6218fdaf5d869bb5a6f7e2e18c4..0000000000000000000000000000000000000000
--- a/conversations/conv_000311.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.20720366941526,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 3.8395302017410127,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
-      "real_speaker_id": "2428",
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-      "speaker_id": 2,
-      "start_time": 8.962047203909576,
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-      "utterance_id": "174-84280",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
-      "real_speaker_id": "174",
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-      "speaker_id": 0,
-      "start_time": 13.134419927250331,
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-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
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-      "speaker_id": 1,
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-      "duration_frames": 52000,
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-      "utterance_id": "5338-24615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24615.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 22.639171146615652,
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-      "overlap": false,
-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 145898
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-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 29.687714809023547,
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-      "utterance_id": "174-84280",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 55910
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-  "background_events": [
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-      "event_class": "Frying",
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-      "event_class": "laugh",
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-      "speaker_id": "174"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000312.json b/conversations/conv_000312.json
deleted file mode 100644
index 6c8ead763ed189f145ca6503164ee6cee658b7d2..0000000000000000000000000000000000000000
--- a/conversations/conv_000312.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
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-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
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-      "real_speaker_id": "7976",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
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-      "speaker_id": 1,
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-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 78219
-    },
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-      "segment_id": "seg0005",
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-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
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-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/235566.wav",
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-  "foreground_events": [
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-      "event_class": "Cat",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
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-      "speaker_id": "3752"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000313.json b/conversations/conv_000313.json
deleted file mode 100644
index 18c73de1c68d6ca02477499390df17f8ff541861..0000000000000000000000000000000000000000
--- a/conversations/conv_000313.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
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-    {
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
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-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
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-      "real_speaker_id": "3576",
-      "position_frames": 86220
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "duration": 4.765330880587118,
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-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 137024
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/232915.wav",
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-  "paralinguistic_events": [
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-      "start_time": 0,
-      "speaker_id": "3576"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1673/laugh/0010.wav",
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1673/laugh/0030.wav",
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2902/cough/0018.wav",
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-      "start_time": 16.29041175392354,
-      "speaker_id": "2902"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000314.json b/conversations/conv_000314.json
deleted file mode 100644
index 00ae72216c7285078b983bffca918a35813bd2de..0000000000000000000000000000000000000000
--- a/conversations/conv_000314.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93306.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-168635.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000315.json b/conversations/conv_000315.json
deleted file mode 100644
index e5a939105b2bd03a0d28f38a59c470e3ba58eec9..0000000000000000000000000000000000000000
--- a/conversations/conv_000315.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.231098462762446,
-  "num_speakers": 3,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000316.json b/conversations/conv_000316.json
deleted file mode 100644
index 5ea6902dfd6741d15a8f28e324d2c73fb2b997b8..0000000000000000000000000000000000000000
--- a/conversations/conv_000316.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-  "foreground_events": [
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\ No newline at end of file
diff --git a/conversations/conv_000317.json b/conversations/conv_000317.json
deleted file mode 100644
index f8b9836e7db85806b72d398725110cf0f095e391..0000000000000000000000000000000000000000
--- a/conversations/conv_000317.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.12554458181995,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
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-      "speaker_id": "1272"
-    }
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-}
\ No newline at end of file
diff --git a/conversations/conv_000318.json b/conversations/conv_000318.json
deleted file mode 100644
index b171f84bd0b96def76da8a51c2be789eb9c0f463..0000000000000000000000000000000000000000
--- a/conversations/conv_000318.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "7850-286674",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-286674.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
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-      "position_frames": 0
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-      "speaker_id": 2,
-      "start_time": 16.917066007939123,
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-      "overlap": false,
-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 21.836174428442384,
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-      "utterance_id": "7850-111771",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-111771.flac |",
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 28.489405439750534,
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-      "duration": 3.5105945602494657,
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-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/362765_1.wav",
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\ No newline at end of file
diff --git a/conversations/conv_000319.json b/conversations/conv_000319.json
deleted file mode 100644
index ee575ee1911b94084d5d8debd4c3087f44897125..0000000000000000000000000000000000000000
--- a/conversations/conv_000319.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
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-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 7.228214697093264,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
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-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/59327.wav",
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-    {
-      "event_class": "laugh",
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-      "speaker_id": "3170"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000320.json b/conversations/conv_000320.json
deleted file mode 100644
index 1f930668618c2732d6c7d5c504abe425ad428e9a..0000000000000000000000000000000000000000
--- a/conversations/conv_000320.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302196.flac |",
-      "real_speaker_id": "8842",
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\ No newline at end of file
diff --git a/conversations/conv_000321.json b/conversations/conv_000321.json
deleted file mode 100644
index 0dfc2fc06a1de4ae3858a5f62aa362069efda014..0000000000000000000000000000000000000000
--- a/conversations/conv_000321.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
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-      "position_frames": 72311
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366512.wav",
-      "duration": 15.289090449768402,
-      "start_time": 8.243892601094325
-    }
-  ],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/187340.wav",
-      "duration": 1.1456469139304706,
-      "start_time": 6.636983651285444
-    }
-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1993/laugh/0026.wav",
-      "duration": 0.5165541188124643,
-      "start_time": 3.9747580529301025,
-      "speaker_id": "1993"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1993/cough/0019.wav",
-      "duration": 0.7444790367215841,
-      "start_time": 0,
-      "speaker_id": "1993"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2035/cough/0029.wav",
-      "duration": 0.5348172596899051,
-      "start_time": 8.926912342512267,
-      "speaker_id": "2035"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2035/laugh/0066.wav",
-      "duration": 0.98,
-      "start_time": 26.773374871129338,
-      "speaker_id": "2035"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000322.json b/conversations/conv_000322.json
deleted file mode 100644
index 5f32fa103217ed1aaa264f0ed9c95ccfa52221dd..0000000000000000000000000000000000000000
--- a/conversations/conv_000322.json
+++ /dev/null
@@ -1,159 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.5656215093128147,
-      "duration": 3.5656215093128147,
-      "start_frame": 0,
-      "duration_frames": 57049,
-      "overlap": false,
-      "utterance_id": "5694-64025",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 3.807383575036908,
-      "end_time": 7.735587846470576,
-      "duration": 3.928204271433668,
-      "start_frame": 60918,
-      "duration_frames": 62851,
-      "overlap": false,
-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 8.184269052277646,
-      "end_time": 11.742329931856244,
-      "duration": 3.5580608795785977,
-      "start_frame": 130948,
-      "duration_frames": 56928,
-      "overlap": false,
-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 11.946226187608112,
-      "end_time": 16.001197306994833,
-      "duration": 4.054971119386723,
-      "start_frame": 191139,
-      "duration_frames": 64879,
-      "overlap": false,
-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 62851
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 16.216663856649124,
-      "end_time": 20.118949937941103,
-      "duration": 3.9022860812919777,
-      "start_frame": 259466,
-      "duration_frames": 62436,
-      "overlap": true,
-      "utterance_id": "5694-64029",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64029.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 21.893494837488216,
-      "end_time": 27.478554266497746,
-      "duration": 5.5850594290095295,
-      "start_frame": 350295,
-      "duration_frames": 89360,
-      "overlap": false,
-      "utterance_id": "6295-64301",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 27.68693639341484,
-      "end_time": 32.0,
-      "duration": 4.31306360658516,
-      "start_frame": 442990,
-      "duration_frames": 69009,
-      "overlap": false,
-      "utterance_id": "5694-64029",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64029.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 62436
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/239565.wav",
-      "duration": 20.346579737274638,
-      "start_time": 11.425907821098994
-    }
-  ],
-  "foreground_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/417995.wav",
-      "duration": 1.5684754119032323,
-      "start_time": 9.977117805087332
-    }
-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2035/laugh/0066.wav",
-      "duration": 0.8245853575115134,
-      "start_time": 2.82040098788461,
-      "speaker_id": "2035"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2035/cough/0048.wav",
-      "duration": 0.8530875741226405,
-      "start_time": 11.083344336628368,
-      "speaker_id": "2035"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5694/laugh/0015.wav",
-      "duration": 1.0594524619510781,
-      "start_time": 20.164619928670238,
-      "speaker_id": "5694"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5694/laugh/0012.wav",
-      "duration": 1.26,
-      "start_time": 30.74,
-      "speaker_id": "5694"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5694/cough/0000.wav",
-      "duration": 0.8291743533954097,
-      "start_time": 29.2849623111439,
-      "speaker_id": "5694"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000323.json b/conversations/conv_000323.json
deleted file mode 100644
index ab1ea9f5a648117310c1452b50c4a39baffa8e1f..0000000000000000000000000000000000000000
--- a/conversations/conv_000323.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 5.938426147603707,
-      "duration": 5.938426147603707,
-      "start_frame": 0,
-      "duration_frames": 95014,
-      "overlap": false,
-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 6.78101042273628,
-      "end_time": 11.814528693199506,
-      "duration": 5.033518270463226,
-      "start_frame": 108496,
-      "duration_frames": 80536,
-      "overlap": false,
-      "utterance_id": "2428-83699",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 12.264652136706697,
-      "end_time": 17.67815425076098,
-      "duration": 5.413502114054282,
-      "start_frame": 196234,
-      "duration_frames": 86616,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 18.35174308289952,
-      "end_time": 23.85660677613911,
-      "duration": 5.5048636932395905,
-      "start_frame": 293627,
-      "duration_frames": 88077,
-      "overlap": false,
-      "utterance_id": "7850-73752",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-73752.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 24.127284807246554,
-      "end_time": 28.711158660102086,
-      "duration": 4.583873852855534,
-      "start_frame": 386036,
-      "duration_frames": 73341,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 86616
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 29.123904527998324,
-      "end_time": 32.0,
-      "duration": 2.8760954720016763,
-      "start_frame": 465982,
-      "duration_frames": 46017,
-      "overlap": false,
-      "utterance_id": "2428-83699",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 80536
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/156110.wav",
-      "duration": 10.255945671617383,
-      "start_time": 10.206769831112087
-    }
-  ],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/408348_1.wav",
-      "duration": 1.752149245164441,
-      "start_time": 19.587484744402218
-    },
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/325254_2.wav",
-      "duration": 0.254421768707483,
-      "start_time": 30.377476404065973
-    }
-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7850/cough/0037.wav",
-      "duration": 0.837976943927121,
-      "start_time": 0,
-      "speaker_id": "7850"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2428/laugh/0075.wav",
-      "duration": 0.7581620937323583,
-      "start_time": 11.814603100312048,
-      "speaker_id": "2428"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2428/cough/0044.wav",
-      "duration": 1.04,
-      "start_time": 5.638744069673153,
-      "speaker_id": "2428"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7850/cough/0022.wav",
-      "duration": 0.8966436032075584,
-      "start_time": 17.260654891404094,
-      "speaker_id": "7850"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2428/cough/0055.wav",
-      "duration": 0.96,
-      "start_time": 31.04,
-      "speaker_id": "2428"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000324.json b/conversations/conv_000324.json
deleted file mode 100644
index aaa727d768568ee56981c2ac10b90dd2c39dc093..0000000000000000000000000000000000000000
--- a/conversations/conv_000324.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.787160915393147,
-      "duration": 3.787160915393147,
-      "start_frame": 0,
-      "duration_frames": 60594,
-      "overlap": false,
-      "utterance_id": "5536-43358",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.5968123304457364,
-      "end_time": 9.240868843784964,
-      "duration": 4.644056513339228,
-      "start_frame": 73548,
-      "duration_frames": 74304,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 9.969087821432012,
-      "end_time": 14.384990087598117,
-      "duration": 4.415902266166105,
-      "start_frame": 159505,
-      "duration_frames": 70654,
-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 15.483474630031026,
-      "end_time": 22.27009228268004,
-      "duration": 6.786617652649012,
-      "start_frame": 247735,
-      "duration_frames": 108585,
-      "overlap": false,
-      "utterance_id": "5536-43363",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43363.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 22.94509673734908,
-      "end_time": 28.847930487851905,
-      "duration": 5.902833750502827,
-      "start_frame": 367121,
-      "duration_frames": 94445,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 74304
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 29.78037111650351,
-      "end_time": 32.0,
-      "duration": 2.2196288834964903,
-      "start_frame": 476485,
-      "duration_frames": 35514,
-      "overlap": false,
-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/132472.wav",
-      "duration": 16.561632653061224,
-      "start_time": 8.076525907740503
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/79440_2.wav",
-      "duration": 3.8235992444253046,
-      "start_time": 12.153490623278627
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-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/20079_2.wav",
-      "duration": 0.16310657596371883,
-      "start_time": 18.445076194891325
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/laugh/0005.wav",
-      "duration": 0.731322122732871,
-      "start_time": 4.699853483618606,
-      "speaker_id": "422"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5536/laugh/0024.wav",
-      "duration": 1.535167658837773,
-      "start_time": 20.454760204586524,
-      "speaker_id": "5536"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/laugh/0001.wav",
-      "duration": 1.32,
-      "start_time": 21.482095588501195,
-      "speaker_id": "422"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2902/laugh/0004.wav",
-      "duration": 0.7654402520456585,
-      "start_time": 31.234559747954343,
-      "speaker_id": "2902"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2902/cough/0028.wav",
-      "duration": 0.3599923410058998,
-      "start_time": 30.072085475404915,
-      "speaker_id": "2902"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000325.json b/conversations/conv_000325.json
deleted file mode 100644
index 0b843d9b2bfd1e247eaf2f5d8570ccd2de328b47..0000000000000000000000000000000000000000
--- a/conversations/conv_000325.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 5.4387489105766775,
-      "duration": 5.4387489105766775,
-      "start_frame": 0,
-      "duration_frames": 87019,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.767317874898254,
-      "end_time": 10.123669835545378,
-      "duration": 4.3563519606471255,
-      "start_frame": 92277,
-      "duration_frames": 69701,
-      "overlap": false,
-      "utterance_id": "8297-275154",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275154.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 10.384490097538254,
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-      "duration": 5.897252200929135,
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-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.658651285428824,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 87019
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 22.950241303864573,
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-      "utterance_id": "8297-275156",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275156.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 28.980192074031752,
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-      "duration": 3.019807925968248,
-      "start_frame": 463683,
-      "duration_frames": 48316,
-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 94356
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/366069.wav",
-      "duration": 16.222741069499197,
-      "start_time": 0.16710955601813773
-    }
-  ],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/20079_1.wav",
-      "duration": 0.8380952380952381,
-      "start_time": 14.01903409927662
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-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/340831.wav",
-      "duration": 2.305044781868265,
-      "start_time": 16.079092970154342
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8297/laugh/0016.wav",
-      "duration": 1.0858324745458288,
-      "start_time": 10.36994158415594,
-      "speaker_id": "8297"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/cough/0001.wav",
-      "duration": 0.8738993861737372,
-      "start_time": 16.475422378794374,
-      "speaker_id": "3170"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3576/laugh/0009.wav",
-      "duration": 0.5416386038310477,
-      "start_time": 19.654394549748183,
-      "speaker_id": "3576"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8297/laugh/0058.wav",
-      "duration": 0.5955634562574699,
-      "start_time": 22.27153028150081,
-      "speaker_id": "8297"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/laugh/0028.wav",
-      "duration": 1.12,
-      "start_time": 30.88,
-      "speaker_id": "3170"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000326.json b/conversations/conv_000326.json
deleted file mode 100644
index 0a1735595e7d0d03a12b2eb53d59b2652015a055..0000000000000000000000000000000000000000
--- a/conversations/conv_000326.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.6102143504885977,
-      "duration": 3.6102143504885977,
-      "start_frame": 0,
-      "duration_frames": 57763,
-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 4.2579137278289805,
-      "end_time": 7.865634426683673,
-      "duration": 3.6077206988546933,
-      "start_frame": 68126,
-      "duration_frames": 57723,
-      "overlap": false,
-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 8.60372977230574,
-      "end_time": 11.945763100538684,
-      "duration": 3.3420333282329446,
-      "start_frame": 137659,
-      "duration_frames": 53472,
-      "overlap": false,
-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 11.770219187045464,
-      "end_time": 16.64538681794092,
-      "duration": 4.875167630895456,
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-      "duration_frames": 78002,
-      "overlap": true,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 57763
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 16.97523021442288,
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-      "overlap": true,
-      "utterance_id": "652-130726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130726.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 22.06101933334801,
-      "end_time": 27.50695677490612,
-      "duration": 5.445937441558108,
-      "start_frame": 352976,
-      "duration_frames": 87134,
-      "overlap": false,
-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 53472
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 27.89919252757305,
-      "end_time": 32.0,
-      "duration": 4.1008074724269505,
-      "start_frame": 446387,
-      "duration_frames": 65612,
-      "overlap": false,
-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 57723
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/371913_1.wav",
-      "duration": 26.607777777777777,
-      "start_time": 2.4027039470428306
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/213889_6.wav",
-      "duration": 1.2077777777777778,
-      "start_time": 23.704851555325035
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-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/347708.wav",
-      "duration": 3.5436031467127727,
-      "start_time": 14.78091322324414
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/cough/0043.wav",
-      "duration": 0.9460160675048028,
-      "start_time": 15.960027892738038,
-      "speaker_id": "652"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2428/laugh/0044.wav",
-      "duration": 1.16,
-      "start_time": 28.14310184149886,
-      "speaker_id": "2428"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000327.json b/conversations/conv_000327.json
deleted file mode 100644
index 976f936e36237e5059976a72d8f64b833f0d183f..0000000000000000000000000000000000000000
--- a/conversations/conv_000327.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.6028920731361698,
-      "duration": 3.6028920731361698,
-      "start_frame": 0,
-      "duration_frames": 57646,
-      "overlap": false,
-      "utterance_id": "1462-170138",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170138.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
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-      "start_time": 4.336045211696529,
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-      "overlap": false,
-      "utterance_id": "8297-275156",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275156.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
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-      "utterance_id": "174-168635",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-168635.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 16.322123641138127,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275156.flac |",
-      "real_speaker_id": "8297",
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-    {
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-      "position_frames": 57646
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-    {
-      "segment_id": "seg0005",
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-      "end_time": 32.0,
-      "duration": 4.3869663441320625,
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-      "overlap": false,
-      "utterance_id": "174-50561",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-50561.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/189735.wav",
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-  "foreground_events": [
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-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
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-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8297/laugh/0033.wav",
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/laugh/0072.wav",
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/174/laugh/0044.wav",
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-      "speaker_id": "174"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000328.json b/conversations/conv_000328.json
deleted file mode 100644
index ffe34d7828238bd93a31e22bd4a9a2e65b024da3..0000000000000000000000000000000000000000
--- a/conversations/conv_000328.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "utterance_id": "8842-304647",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-304647.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-304647.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000329.json b/conversations/conv_000329.json
deleted file mode 100644
index 9e903d7d8ae059670d774717619b9ea48c72ce68..0000000000000000000000000000000000000000
--- a/conversations/conv_000329.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
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-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Frying",
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\ No newline at end of file
diff --git a/conversations/conv_000330.json b/conversations/conv_000330.json
deleted file mode 100644
index a4eb7094914353ff6f2f52095ee007135765f086..0000000000000000000000000000000000000000
--- a/conversations/conv_000330.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
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\ No newline at end of file
diff --git a/conversations/conv_000331.json b/conversations/conv_000331.json
deleted file mode 100644
index f74fc331725b470af8bba80e59d7458cfd04c2a8..0000000000000000000000000000000000000000
--- a/conversations/conv_000331.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000332.json b/conversations/conv_000332.json
deleted file mode 100644
index bd4c258131f139e1be0a2d86b35763de5c385538..0000000000000000000000000000000000000000
--- a/conversations/conv_000332.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.240681548679188,
-  "num_speakers": 2,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302203.flac |",
-      "real_speaker_id": "8842",
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\ No newline at end of file
diff --git a/conversations/conv_000333.json b/conversations/conv_000333.json
deleted file mode 100644
index 650abbdba703ed1293f6365d1d7d0a201b325485..0000000000000000000000000000000000000000
--- a/conversations/conv_000333.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000334.json b/conversations/conv_000334.json
deleted file mode 100644
index 01c1e21db4d9451baa0e12ed11db66686c52857c..0000000000000000000000000000000000000000
--- a/conversations/conv_000334.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
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\ No newline at end of file
diff --git a/conversations/conv_000335.json b/conversations/conv_000335.json
deleted file mode 100644
index b703d7967335995264824d4241827fb5fab0d4b2..0000000000000000000000000000000000000000
--- a/conversations/conv_000335.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
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-      "position_frames": 0
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-}
\ No newline at end of file
diff --git a/conversations/conv_000336.json b/conversations/conv_000336.json
deleted file mode 100644
index 23df8a656b0b0610bc6cc8e2b148c950af2a4bff..0000000000000000000000000000000000000000
--- a/conversations/conv_000336.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000337.json b/conversations/conv_000337.json
deleted file mode 100644
index b30e066ae85b81cff53c24040441b6af6f236621..0000000000000000000000000000000000000000
--- a/conversations/conv_000337.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
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-  "total_duration": 32.0,
-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000338.json b/conversations/conv_000338.json
deleted file mode 100644
index 965193bbda2e1767625ca15ffdb2c04f20bb4492..0000000000000000000000000000000000000000
--- a/conversations/conv_000338.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000339.json b/conversations/conv_000339.json
deleted file mode 100644
index ee120afc0a0276308b0632df3f51ca72e636fc67..0000000000000000000000000000000000000000
--- a/conversations/conv_000339.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000340.json b/conversations/conv_000340.json
deleted file mode 100644
index a0ef0e3e037b739a779e4da9a8348a549718f5b0..0000000000000000000000000000000000000000
--- a/conversations/conv_000340.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "num_segments": 5,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000341.json b/conversations/conv_000341.json
deleted file mode 100644
index ae336318459270b3f10378c9cc4667570b4a94e7..0000000000000000000000000000000000000000
--- a/conversations/conv_000341.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "6319-57405",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
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-      "start_time": 3.96377353468747,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
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-      "position_frames": 56070
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 22.227059503460985,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
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-  ],
-  "background_events": [
-    {
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/378702.wav",
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-      "speaker_id": "251"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000342.json b/conversations/conv_000342.json
deleted file mode 100644
index 7dc60e8d6f76ed81d0893a4d1331481a9868772c..0000000000000000000000000000000000000000
--- a/conversations/conv_000342.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43363.flac |",
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-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
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-      "real_speaker_id": "422",
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-      "speaker_id": 2,
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-      "real_speaker_id": "2803",
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-      "real_speaker_id": "422",
-      "position_frames": 120616
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-  ],
-  "background_events": [
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-  "paralinguistic_events": [
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-      "start_time": 0,
-      "speaker_id": "5536"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000343.json b/conversations/conv_000343.json
deleted file mode 100644
index d0f71afe1554ac9cce4df6318291986b8d1af154..0000000000000000000000000000000000000000
--- a/conversations/conv_000343.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.346719935969695,
-  "num_speakers": 2,
-  "overlap_rate": 0.14285714285714285,
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-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
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-      "utterance_id": "1272-128104",
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-  "foreground_events": [
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-    {
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-      "duration": 1.36,
-      "start_time": 30.64,
-      "speaker_id": "251"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000344.json b/conversations/conv_000344.json
deleted file mode 100644
index 5ec2638089cf64e89986171e6921937a580aedf8..0000000000000000000000000000000000000000
--- a/conversations/conv_000344.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
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\ No newline at end of file
diff --git a/conversations/conv_000345.json b/conversations/conv_000345.json
deleted file mode 100644
index 5b9f01a0563f7b2e213c23ec4cc02ceeb1c2145f..0000000000000000000000000000000000000000
--- a/conversations/conv_000345.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.2857142857142857,
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\ No newline at end of file
diff --git a/conversations/conv_000346.json b/conversations/conv_000346.json
deleted file mode 100644
index e4dd5e00dcfa4a1eab2b3b8432af17dd95e6129c..0000000000000000000000000000000000000000
--- a/conversations/conv_000346.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000347.json b/conversations/conv_000347.json
deleted file mode 100644
index 7ffd85cd888ff291f4cb546260df3b9a571aec67..0000000000000000000000000000000000000000
--- a/conversations/conv_000347.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
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-  "num_speakers": 3,
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5338/laugh/0045.wav",
-      "duration": 1.56,
-      "start_time": 26.829826605017445,
-      "speaker_id": "5338"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000348.json b/conversations/conv_000348.json
deleted file mode 100644
index baa9435c487c7e2a949c37b831c25414a51f2f85..0000000000000000000000000000000000000000
--- a/conversations/conv_000348.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.407360429796984,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.8268138815173716,
-      "duration": 3.8268138815173716,
-      "start_frame": 0,
-      "duration_frames": 61229,
-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 5.020417100631883,
-      "end_time": 9.482550516488908,
-      "duration": 4.462133415857025,
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-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 61229
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-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 9.693323564370411,
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-      "duration_frames": 88920,
-      "overlap": false,
-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 16.066776738001035,
-      "end_time": 21.305155050197936,
-      "duration": 5.238378312196901,
-      "start_frame": 257068,
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-      "overlap": false,
-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 21.28928587252205,
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-      "start_frame": 340628,
-      "duration_frames": 88681,
-      "overlap": true,
-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 28.13624864291667,
-      "end_time": 31.407360429796984,
-      "duration": 3.271111786880315,
-      "start_frame": 450179,
-      "duration_frames": 52337,
-      "overlap": true,
-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 83814
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/235566.wav",
-      "duration": 18.14519516389038,
-      "start_time": 13.126457720671038
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/379144_0.wav",
-      "duration": 0.22993197278911565,
-      "start_time": 25.815047203181305
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-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/56563_1.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/cough/0054.wav",
-      "duration": 0.7319836136762314,
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-      "speaker_id": "652"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1272/cough/0008.wav",
-      "duration": 0.44748470029981297,
-      "start_time": 15.45579912928359,
-      "speaker_id": "1272"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/652/laugh/0042.wav",
-      "duration": 1.1325140042957764,
-      "start_time": 23.89941083077226,
-      "speaker_id": "652"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1272/laugh/0023.wav",
-      "duration": 0.9337671905784992,
-      "start_time": 31.0662328094215,
-      "speaker_id": "1272"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000349.json b/conversations/conv_000349.json
deleted file mode 100644
index b8472fd10c27b7006d17d6d9f63ee51ac598e42e..0000000000000000000000000000000000000000
--- a/conversations/conv_000349.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.407115250044733,
-      "duration": 3.407115250044733,
-      "start_frame": 0,
-      "duration_frames": 54513,
-      "overlap": false,
-      "utterance_id": "1993-147966",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147966.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 3.8625019206925915,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43363.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
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-      "utterance_id": "1993-147964",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 13.912531040080488,
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-      "overlap": false,
-      "utterance_id": "5536-43359",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 20.57833823001121,
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-      "overlap": false,
-      "utterance_id": "1993-147964",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 82780
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 28.03895813484325,
-      "end_time": 32.0,
-      "duration": 3.9610418651567514,
-      "start_frame": 448623,
-      "duration_frames": 63376,
-      "overlap": false,
-      "utterance_id": "1993-147149",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147149.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366512.wav",
-      "duration": 19.84233512382664,
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-  ],
-  "foreground_events": [
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-      "event_class": "Cat",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1993/laugh/0048.wav",
-      "duration": 1.14,
-      "start_time": 3.5558842457436386,
-      "speaker_id": "1993"
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-    {
-      "event_class": "cough",
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-      "start_time": 0,
-      "speaker_id": "1993"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5536/laugh/0028.wav",
-      "duration": 0.8617057801225111,
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1993/laugh/0045.wav",
-      "duration": 0.8897615874895515,
-      "start_time": 31.110238412510448,
-      "speaker_id": "1993"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000350.json b/conversations/conv_000350.json
deleted file mode 100644
index ccd4874e9b29cc78e1c777ffed4f8db20966c18c..0000000000000000000000000000000000000000
--- a/conversations/conv_000350.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
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-      "segment_id": "seg0004",
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-    {
-      "segment_id": "seg0005",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 74348
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-  "background_events": [
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-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/71218_1.wav",
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-      "speaker_id": "6295"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000351.json b/conversations/conv_000351.json
deleted file mode 100644
index 5ea9dd1562a79ded2ead22d85f7ac8e6b16114e0..0000000000000000000000000000000000000000
--- a/conversations/conv_000351.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
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-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/20093.wav",
-      "duration": 0.47965986394557825,
-      "start_time": 3.674030224044829
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-  ],
-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3536/laugh/0041.wav",
-      "duration": 0.7804494590955693,
-      "start_time": 0,
-      "speaker_id": "3536"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2428/laugh/0040.wav",
-      "duration": 0.98,
-      "start_time": 15.639404629196193,
-      "speaker_id": "2428"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3536/laugh/0013.wav",
-      "duration": 0.9199820966319676,
-      "start_time": 30.766796075864413,
-      "speaker_id": "3536"
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-    {
-      "event_class": "laugh",
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-      "duration": 1.06,
-      "start_time": 30.94,
-      "speaker_id": "3536"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000352.json b/conversations/conv_000352.json
deleted file mode 100644
index dc1b5c35169dda0e7e5722ec9ba5c31beab17634..0000000000000000000000000000000000000000
--- a/conversations/conv_000352.json
+++ /dev/null
@@ -1,103 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 5.470748806594443,
-      "duration": 5.470748806594443,
-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "5895-34622",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34622.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.981012746233931,
-      "end_time": 12.495003403784494,
-      "duration": 6.513990657550564,
-      "start_frame": 95696,
-      "duration_frames": 104223,
-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 13.257216994381096,
-      "end_time": 19.136578260369895,
-      "duration": 5.879361265988798,
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-      "duration_frames": 94069,
-      "overlap": false,
-      "utterance_id": "5895-34629",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 19.535425378202028,
-      "end_time": 26.133552436929662,
-      "duration": 6.598127058727636,
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-      "overlap": true,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 27.153472676054808,
-      "end_time": 32.0,
-      "duration": 4.8465273239451925,
-      "start_frame": 434455,
-      "duration_frames": 77544,
-      "overlap": false,
-      "utterance_id": "5895-34622",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34622.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 87531
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/378308.wav",
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/347708.wav",
-      "duration": 3.5353814314676697,
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/cough/0060.wav",
-      "duration": 1.1,
-      "start_time": 12.033905499012938,
-      "speaker_id": "5895"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000353.json b/conversations/conv_000353.json
deleted file mode 100644
index 9e27a46809a7cd7d57d1a69a3a41fe8799792ead..0000000000000000000000000000000000000000
--- a/conversations/conv_000353.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 5.188166778914386,
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-      "overlap": false,
-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.945042064280785,
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-      "duration": 3.134823797113283,
-      "start_frame": 79120,
-      "duration_frames": 50157,
-      "overlap": true,
-      "utterance_id": "1993-147966",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147966.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 8.649375025235596,
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-      "overlap": false,
-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 14.973557021662522,
-      "end_time": 19.51307915877503,
-      "duration": 4.539522137112509,
-      "start_frame": 239576,
-      "duration_frames": 72632,
-      "overlap": false,
-      "utterance_id": "1993-147965",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147965.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 19.26547108734459,
-      "end_time": 24.39428786859937,
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-      "overlap": true,
-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 25.877478269600772,
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-      "duration": 6.122521730399228,
-      "start_frame": 414039,
-      "duration_frames": 97960,
-      "overlap": false,
-      "utterance_id": "1993-147964",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/371920_1.wav",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1993/cough/0053.wav",
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-      "speaker_id": "1993"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/251/cough/0015.wav",
-      "duration": 1.22,
-      "start_time": 21.93625188986058,
-      "speaker_id": "251"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000354.json b/conversations/conv_000354.json
deleted file mode 100644
index 25596ee1f4bfcdc1ada5e6fe534423217924538f..0000000000000000000000000000000000000000
--- a/conversations/conv_000354.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.574711689161802,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.594378778503893,
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-      "utterance_id": "6241-66616",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
-      "real_speaker_id": "6241",
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-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 11.272200159439393,
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-      "duration_frames": 64963,
-      "overlap": true,
-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 15.85007182420275,
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-      "start_frame": 253601,
-      "duration_frames": 93223,
-      "overlap": false,
-      "utterance_id": "652-130726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130726.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 22.467254297082086,
-      "end_time": 26.72734671538696,
-      "duration": 4.260092418304875,
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-      "duration_frames": 68161,
-      "overlap": false,
-      "utterance_id": "2035-147961",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "duration_frames": 70305,
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-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/371920_2.wav",
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-    {
-      "event_class": "laugh",
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-    {
-      "event_class": "laugh",
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-      "duration": 1.3,
-      "start_time": 25.64288306967352,
-      "speaker_id": "652"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000355.json b/conversations/conv_000355.json
deleted file mode 100644
index 0f113b54975014ac85a846d895f3f6cab8dfb682..0000000000000000000000000000000000000000
--- a/conversations/conv_000355.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.72338949910989,
-  "num_speakers": 3,
-  "overlap_rate": 0.5,
-  "segments": [
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-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 3.623159362899103,
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-      "overlap": true,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
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-      "start_time": 10.742996774992392,
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-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 17.247038310966037,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 95971
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 25.00310873771619,
-      "end_time": 30.25875745304318,
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-      "duration_frames": 84090,
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
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-      "duration": 1.4804683698629724,
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-      "overlap": true,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 185160
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
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-  "paralinguistic_events": [
-    {
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/laugh/0038.wav",
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/laugh/0040.wav",
-      "duration": 0.96,
-      "start_time": 31.04,
-      "speaker_id": "2078"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000356.json b/conversations/conv_000356.json
deleted file mode 100644
index 6b9b05d28fb0ccb635315a00fd7dbfbe3c39d748..0000000000000000000000000000000000000000
--- a/conversations/conv_000356.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
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\ No newline at end of file
diff --git a/conversations/conv_000357.json b/conversations/conv_000357.json
deleted file mode 100644
index 401c459a0895a5076d173641dcf8b773180817cb..0000000000000000000000000000000000000000
--- a/conversations/conv_000357.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.4,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149897.flac |",
-      "real_speaker_id": "2277",
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-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
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-      "position_frames": 0
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-  "background_events": [
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\ No newline at end of file
diff --git a/conversations/conv_000358.json b/conversations/conv_000358.json
deleted file mode 100644
index 3a1bb7d57925b3492dc76126a804a7931a5a69ca..0000000000000000000000000000000000000000
--- a/conversations/conv_000358.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "position_frames": 109693
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-      "utterance_id": "8842-302203",
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-      "real_speaker_id": "8842",
-      "position_frames": 0
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-  "background_events": [
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\ No newline at end of file
diff --git a/conversations/conv_000359.json b/conversations/conv_000359.json
deleted file mode 100644
index b434ea70b33b4ed63e8e8607bd1febaa6db2ade2..0000000000000000000000000000000000000000
--- a/conversations/conv_000359.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
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-      "position_frames": 0
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-  "foreground_events": [
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-      "duration": 0.43352627530296267,
-      "start_time": 22.241876057545532,
-      "speaker_id": "2428"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000360.json b/conversations/conv_000360.json
deleted file mode 100644
index 59298ea850d50b209bfc1c1869926df097754488..0000000000000000000000000000000000000000
--- a/conversations/conv_000360.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 5.169983195029417,
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-      "duration_frames": 82719,
-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 5.97049577646565,
-      "end_time": 11.082201464544845,
-      "duration": 5.111705688079196,
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-      "duration_frames": 81787,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
-    },
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-      "speaker_id": 2,
-      "start_time": 12.125355255735748,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 82719
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 24.39210220568127,
-      "end_time": 30.049587583742305,
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-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 81787
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 30.29874587633778,
-      "end_time": 32.0,
-      "duration": 1.7012541236622205,
-      "start_frame": 484779,
-      "duration_frames": 27220,
-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 84387
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/189735.wav",
-      "duration": 26.969514436123283,
-      "start_time": 4.5412943393472744
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/56563_1.wav",
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-      "start_time": 2.1487524961111353
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/laugh/0003.wav",
-      "duration": 0.5542829060230365,
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-    {
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-    {
-      "event_class": "laugh",
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-      "duration": 1.16,
-      "start_time": 11.233438939206204,
-      "speaker_id": "3576"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/laugh/0022.wav",
-      "duration": 0.603160899246069,
-      "start_time": 11.468241531585308,
-      "speaker_id": "3170"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/cough/0022.wav",
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/cough/0008.wav",
-      "duration": 1.24,
-      "start_time": 23.541679888253658,
-      "speaker_id": "3853"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000361.json b/conversations/conv_000361.json
deleted file mode 100644
index 69af64a1502ec26b6610f811c9e43350ede8ac4e..0000000000000000000000000000000000000000
--- a/conversations/conv_000361.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
-    },
-    {
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-      "start_time": 4.46999204680383,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 74144
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-      "segment_id": "seg0003",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 97642
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 23.58303338116253,
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 140695
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 28.421969455305497,
-      "end_time": 32.0,
-      "duration": 3.578030544694503,
-      "start_frame": 454751,
-      "duration_frames": 57248,
-      "overlap": false,
-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 192217
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/239565.wav",
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-      "event_class": "Vacuum_cleaner",
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-  "paralinguistic_events": [
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-      "duration": 1.02,
-      "start_time": 0,
-      "speaker_id": "2078"
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-    {
-      "event_class": "laugh",
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-    {
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-      "duration": 1.1698473195782306,
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-      "speaker_id": "2078"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000362.json b/conversations/conv_000362.json
deleted file mode 100644
index bb8333d40de3b142f7fb147cf2a0abd34c8653b1..0000000000000000000000000000000000000000
--- a/conversations/conv_000362.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
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-      "segment_id": "seg0005",
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-  "background_events": [
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-  "paralinguistic_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000363.json b/conversations/conv_000363.json
deleted file mode 100644
index 4022833e3c83ef2c66d0dbab50861acc74094ba1..0000000000000000000000000000000000000000
--- a/conversations/conv_000363.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.487770893737633,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
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-      "event_class": "Blender",
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-      "speaker_id": "6295"
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-      "speaker_id": "6295"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000364.json b/conversations/conv_000364.json
deleted file mode 100644
index e789eaf130ecb27b5eb557c35d859cefccab3e31..0000000000000000000000000000000000000000
--- a/conversations/conv_000364.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "2803-161169",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-161169.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
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-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 7.718084418543057,
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
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-      "position_frames": 0
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 73600
-    },
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 18.988825390917476,
-      "end_time": 22.96006132404454,
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 166504
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 24.010483609198953,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-161169.flac |",
-      "real_speaker_id": "2803",
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 28.57982873377687,
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-      "utterance_id": "2803-161169",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-161169.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 169153
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/20079_0.wav",
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-      "duration": 1.0,
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-    {
-      "event_class": "laugh",
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-      "start_time": 30.96,
-      "speaker_id": "2803"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000365.json b/conversations/conv_000365.json
deleted file mode 100644
index 92c385020df8e6c275c83fc9332e38956a82bcf9..0000000000000000000000000000000000000000
--- a/conversations/conv_000365.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.679061028496676,
-  "num_speakers": 3,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "real_speaker_id": "3170",
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
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-  "background_events": [],
-  "foreground_events": [
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\ No newline at end of file
diff --git a/conversations/conv_000366.json b/conversations/conv_000366.json
deleted file mode 100644
index 0efc45281b34cef75a6b8c3d2e5e1eeb11bdf64f..0000000000000000000000000000000000000000
--- a/conversations/conv_000366.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000367.json b/conversations/conv_000367.json
deleted file mode 100644
index 1bef0c6a0222dcef2b4b864bd1915c415b60c63a..0000000000000000000000000000000000000000
--- a/conversations/conv_000367.json
+++ /dev/null
@@ -1,102 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.677738862995714,
-  "num_speakers": 3,
-  "overlap_rate": 0.5,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
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-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
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-  "background_events": [],
-  "foreground_events": [
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/233645_7.wav",
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-  "paralinguistic_events": []
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\ No newline at end of file
diff --git a/conversations/conv_000368.json b/conversations/conv_000368.json
deleted file mode 100644
index 4dced263e7d7cae019ca905a86bbc3399e7194da..0000000000000000000000000000000000000000
--- a/conversations/conv_000368.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
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-      "speaker_id": 0,
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-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
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-      "segment_id": "seg0005",
-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000369.json b/conversations/conv_000369.json
deleted file mode 100644
index 197928442f54d66bd9bcb9ddeb12c16f8f6136b2..0000000000000000000000000000000000000000
--- a/conversations/conv_000369.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "segment_id": "seg0004",
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-      "real_speaker_id": "2412",
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
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-      "position_frames": 86381
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-}
\ No newline at end of file
diff --git a/conversations/conv_000370.json b/conversations/conv_000370.json
deleted file mode 100644
index 53ce7533d2829e8214e816b10b303cab3d2224ff..0000000000000000000000000000000000000000
--- a/conversations/conv_000370.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000371.json b/conversations/conv_000371.json
deleted file mode 100644
index 50c3b069b512df632c2a1fdfcd1853b9da048df0..0000000000000000000000000000000000000000
--- a/conversations/conv_000371.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275154.flac |",
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-      "start_time": 29.1776722856849,
-      "speaker_id": "8297"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6313/cough/0082.wav",
-      "duration": 0.7424634187423559,
-      "start_time": 29.87441943364862,
-      "speaker_id": "6313"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000372.json b/conversations/conv_000372.json
deleted file mode 100644
index f701930b365f3c2feaf4527d83a5e7876a38bf7f..0000000000000000000000000000000000000000
--- a/conversations/conv_000372.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.519681587241477,
-      "duration": 5.519681587241477,
-      "start_frame": 0,
-      "duration_frames": 88314,
-      "overlap": false,
-      "utterance_id": "1272-141231",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.040789447187088,
-      "end_time": 10.94937081789099,
-      "duration": 4.908581370703902,
-      "start_frame": 96652,
-      "duration_frames": 78537,
-      "overlap": false,
-      "utterance_id": "6345-93306",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93306.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 11.425470982822542,
-      "end_time": 15.857197842610947,
-      "duration": 4.431726859788404,
-      "start_frame": 182807,
-      "duration_frames": 70907,
-      "overlap": false,
-      "utterance_id": "1272-141231",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 88314
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.66442279193446,
-      "end_time": 21.6827194372609,
-      "duration": 5.018296645326442,
-      "start_frame": 266630,
-      "duration_frames": 80292,
-      "overlap": false,
-      "utterance_id": "6345-93306",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93306.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 78537
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 21.852118645046666,
-      "end_time": 26.673625737167747,
-      "duration": 4.821507092121083,
-      "start_frame": 349633,
-      "duration_frames": 77144,
-      "overlap": false,
-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.427590097317946,
-      "end_time": 32.0,
-      "duration": 4.572409902682054,
-      "start_frame": 438841,
-      "duration_frames": 73158,
-      "overlap": false,
-      "utterance_id": "6345-93302",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93302.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/417229.wav",
-      "duration": 10.359664591161678,
-      "start_time": 6.415157262469054
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/329896_10.wav",
-      "duration": 0.5341496598639456,
-      "start_time": 2.0234484801862225
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-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/59513_7.wav",
-      "duration": 0.29401360544217686,
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1272/laugh/0023.wav",
-      "duration": 1.1284526714617207,
-      "start_time": 1.8459532346716359,
-      "speaker_id": "1272"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6345/cough/0070.wav",
-      "duration": 0.8280025534509015,
-      "start_time": 8.732844977187433,
-      "speaker_id": "6345"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1272/cough/0063.wav",
-      "duration": 1.1563199908857424,
-      "start_time": 16.0062091848759,
-      "speaker_id": "1272"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6345/laugh/0042.wav",
-      "duration": 1.52,
-      "start_time": 30.48,
-      "speaker_id": "6345"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6345/cough/0035.wav",
-      "duration": 0.42802531485986756,
-      "start_time": 26.915331786655248,
-      "speaker_id": "6345"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000373.json b/conversations/conv_000373.json
deleted file mode 100644
index 22fb01b8f715dc20790090f624a9a8f6d14234c5..0000000000000000000000000000000000000000
--- a/conversations/conv_000373.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.644961345339912,
-      "duration": 5.644961345339912,
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-      "overlap": false,
-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.389629148579347,
-      "end_time": 11.131317533846413,
-      "duration": 4.741688385267067,
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-      "duration_frames": 75867,
-      "overlap": false,
-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 12.036808693558598,
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-      "duration": 6.305936091279022,
-      "start_frame": 192588,
-      "duration_frames": 100894,
-      "overlap": false,
-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 18.996568609092975,
-      "end_time": 22.782952174572877,
-      "duration": 3.786383565479901,
-      "start_frame": 303945,
-      "duration_frames": 60582,
-      "overlap": false,
-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 22.930588580894238,
-      "end_time": 27.118948654707005,
-      "duration": 4.188360073812765,
-      "start_frame": 366889,
-      "duration_frames": 67013,
-      "overlap": false,
-      "utterance_id": "2803-161169",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-161169.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 28.01775209549177,
-      "end_time": 32.0,
-      "duration": 3.982247904508231,
-      "start_frame": 448284,
-      "duration_frames": 63715,
-      "overlap": false,
-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 60582
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/377500.wav",
-      "duration": 0.236984126984127,
-      "start_time": 4.705280914967189
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/laugh/0015.wav",
-      "duration": 1.62,
-      "start_time": 30.38,
-      "speaker_id": "7976"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000374.json b/conversations/conv_000374.json
deleted file mode 100644
index 20f5b6cc344bc052f02496fc1fc1eb9c4cee6e8e..0000000000000000000000000000000000000000
--- a/conversations/conv_000374.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 4.7100951749324995,
-      "duration": 4.7100951749324995,
-      "start_frame": 0,
-      "duration_frames": 75361,
-      "overlap": false,
-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.141757573413788,
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-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
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-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 66399
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 15.831219005429432,
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-      "duration": 6.160171400573861,
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-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 75361
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 22.66246938905673,
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-      "duration_frames": 94351,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 29.135509185794596,
-      "end_time": 32.0,
-      "duration": 2.8644908142054035,
-      "start_frame": 466168,
-      "duration_frames": 45831,
-      "overlap": false,
-      "utterance_id": "6319-57405",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366510.wav",
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-  "foreground_events": [
-    {
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/366511.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1919/laugh/0062.wav",
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6319/laugh/0011.wav",
-      "duration": 1.14337949751506,
-      "start_time": 22.02376098184777,
-      "speaker_id": "6319"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6319/cough/0050.wav",
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6319/laugh/0007.wav",
-      "duration": 1.2027374306571907,
-      "start_time": 30.79726256934281,
-      "speaker_id": "6319"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000375.json b/conversations/conv_000375.json
deleted file mode 100644
index d37c4fd0028c3ab8bac9adac73ffe61efa326daa..0000000000000000000000000000000000000000
--- a/conversations/conv_000375.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 4.550071804775754,
-      "duration": 4.550071804775754,
-      "start_frame": 0,
-      "duration_frames": 72801,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 4.7654351711926,
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-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
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-      "segment_id": "seg0002",
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-      "utterance_id": "1462-170145",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 15.684687979424027,
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-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
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-    {
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-  "foreground_events": [
-    {
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-      "duration": 0.9,
-      "start_time": 14.918562123687991,
-      "speaker_id": "1462"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6313/laugh/0004.wav",
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-      "start_time": 20.548605826344343,
-      "speaker_id": "6313"
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-    {
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/laugh/0091.wav",
-      "duration": 1.2580336647952073,
-      "start_time": 25.82636436702772,
-      "speaker_id": "1462"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000376.json b/conversations/conv_000376.json
deleted file mode 100644
index d94e29985497a138af7705cd33cec16e12e578fa..0000000000000000000000000000000000000000
--- a/conversations/conv_000376.json
+++ /dev/null
@@ -1,173 +0,0 @@
-{
-  "num_segments": 8,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.125,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.776944993884179,
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-      "duration_frames": 60431,
-      "overlap": false,
-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 3.9182927695752188,
-      "end_time": 7.037012818097196,
-      "duration": 3.1187200485219773,
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-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 60431
-    },
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-      "speaker_id": 2,
-      "start_time": 7.531164681001615,
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-      "overlap": false,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
-    },
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-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
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-      "speaker_id": 0,
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-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
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-      "speaker_id": 2,
-      "start_time": 20.85831764880561,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 58923
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-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 24.06148182623418,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 57777
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-      "segment_id": "seg0007",
-      "speaker_id": 2,
-      "start_time": 29.372053321936285,
-      "end_time": 32.0,
-      "duration": 2.627946678063715,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 116965
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-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/170745.wav",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/laugh/0041.wav",
-      "duration": 0.6327884783421549,
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-      "speaker_id": "2086"
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-    {
-      "event_class": "laugh",
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-      "speaker_id": "2902"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/laugh/0034.wav",
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-      "speaker_id": "3170"
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-      "event_class": "cough",
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-      "speaker_id": "3170"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000377.json b/conversations/conv_000377.json
deleted file mode 100644
index dc32ec067997affe93d3d049d840a539bd7466c8..0000000000000000000000000000000000000000
--- a/conversations/conv_000377.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 69350
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 23.684376641786045,
-      "end_time": 28.16519426294112,
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-      "duration_frames": 71693,
-      "overlap": false,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 29.531810911651952,
-      "end_time": 32.0,
-      "duration": 2.4681890883480477,
-      "start_frame": 472508,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 161691
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/340831.wav",
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-  "paralinguistic_events": [
-    {
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-      "duration": 1.24,
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-    {
-      "event_class": "laugh",
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-      "duration": 1.1,
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-    {
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/cough/0047.wav",
-      "duration": 1.0889502982676122,
-      "start_time": 16.033659530189336,
-      "speaker_id": "3170"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000378.json b/conversations/conv_000378.json
deleted file mode 100644
index 1aa958302ff3fdd0e7f36dc863a7ebe96eedb463..0000000000000000000000000000000000000000
--- a/conversations/conv_000378.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 31.241097110629852,
-  "num_speakers": 2,
-  "overlap_rate": 0.6,
-  "segments": [
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-      "utterance_id": "6345-64257",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-64257.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147966.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
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-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93302.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 24.452020319319985,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 57794
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-    {
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-      "event_class": "Frying",
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-      "speaker_id": "1993"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000379.json b/conversations/conv_000379.json
deleted file mode 100644
index 7084021158a6c07dab3c627e381ee09379c56306..0000000000000000000000000000000000000000
--- a/conversations/conv_000379.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.992670976421454,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302196.flac |",
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-      "segment_id": "seg0005",
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-      "start_time": 27.802907477264768,
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-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 89740
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/59327.wav",
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3536/laugh/0063.wav",
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-    {
-      "event_class": "laugh",
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-      "duration": 1.02,
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-      "speaker_id": "3536"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3536/laugh/0045.wav",
-      "duration": 0.9521950317246599,
-      "start_time": 18.181834644987546,
-      "speaker_id": "3536"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/laugh/0047.wav",
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-      "speaker_id": "8842"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000380.json b/conversations/conv_000380.json
deleted file mode 100644
index ab23cd1d34fd630e999282c77665768322d66076..0000000000000000000000000000000000000000
--- a/conversations/conv_000380.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 5.463985248080327,
-      "duration": 5.463985248080327,
-      "start_frame": 0,
-      "duration_frames": 87423,
-      "overlap": false,
-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 6.741257444259079,
-      "end_time": 11.32893834161548,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
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-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 16.285409193903806,
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-      "start_frame": 260566,
-      "duration_frames": 60344,
-      "overlap": false,
-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 21.14235953827245,
-      "end_time": 24.64964651993626,
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-      "overlap": false,
-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 87423
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 25.292120671131762,
-      "end_time": 29.137531835772272,
-      "duration": 3.8454111646405087,
-      "start_frame": 404673,
-      "duration_frames": 61526,
-      "overlap": false,
-      "utterance_id": "5536-43358",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 73402
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 29.481502282245614,
-      "end_time": 32.0,
-      "duration": 2.5184977177543857,
-      "start_frame": 471704,
-      "duration_frames": 40295,
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-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 143539
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-  "background_events": [
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-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/2503.wav",
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-  "foreground_events": [
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-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/233645_5.wav",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2902/laugh/0029.wav",
-      "duration": 0.870999802152812,
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-    {
-      "event_class": "laugh",
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-      "duration": 1.16,
-      "start_time": 24.689566815947664,
-      "speaker_id": "2902"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000381.json b/conversations/conv_000381.json
deleted file mode 100644
index e28e05417fabf34ee6f3b1313cf3f133b22a1e8a..0000000000000000000000000000000000000000
--- a/conversations/conv_000381.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 2,
-      "start_time": 0.0,
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-      "start_frame": 0,
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-      "utterance_id": "174-84280",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    },
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-      "speaker_id": 0,
-      "start_time": 5.654453623406879,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
-      "real_speaker_id": "174",
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-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
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-      "real_speaker_id": "3081",
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 28.336125336203274,
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-      "duration": 3.663874663796726,
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-      "duration_frames": 58621,
-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 190444
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/408348_1.wav",
-      "duration": 14.63,
-      "start_time": 6.55069499733668
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-  "foreground_events": [
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-      "event_class": "Cat",
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-  "paralinguistic_events": [
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/laugh/0039.wav",
-      "duration": 1.1,
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-    {
-      "event_class": "laugh",
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-      "speaker_id": "3081"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000382.json b/conversations/conv_000382.json
deleted file mode 100644
index d0b21af29d4c217b2bb869c3bf97db7b3b5c42b1..0000000000000000000000000000000000000000
--- a/conversations/conv_000382.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "overlap": false,
-      "utterance_id": "5895-34615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
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-      "utterance_id": "5895-34615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
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-    {
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-      "speaker_id": 0,
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-      "utterance_id": "7850-286674",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-286674.flac |",
-      "real_speaker_id": "7850",
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-      "segment_id": "seg0004",
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-      "utterance_id": "5895-34629",
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-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 27.653990636950674,
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-      "duration": 4.346009363049326,
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 102731
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/91516.wav",
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-    {
-      "event_class": "Blender",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1919/laugh/0019.wav",
-      "duration": 1.08,
-      "start_time": 11.815875963631346,
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/cough/0058.wav",
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-      "speaker_id": "5895"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1919/laugh/0005.wav",
-      "duration": 1.0894256542676082,
-      "start_time": 30.910574345732392,
-      "speaker_id": "1919"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000383.json b/conversations/conv_000383.json
deleted file mode 100644
index dabb37a5861af14bfdca6dd5c07007a5f8e5c34b..0000000000000000000000000000000000000000
--- a/conversations/conv_000383.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.243236823824,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
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\ No newline at end of file
diff --git a/conversations/conv_000384.json b/conversations/conv_000384.json
deleted file mode 100644
index 2cb3ed1d61fc4a590419fec411204a89e9b1c5e0..0000000000000000000000000000000000000000
--- a/conversations/conv_000384.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
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\ No newline at end of file
diff --git a/conversations/conv_000385.json b/conversations/conv_000385.json
deleted file mode 100644
index 1c428436c4ff02aba37e2d58c06bbc7a9c62f32f..0000000000000000000000000000000000000000
--- a/conversations/conv_000385.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000386.json b/conversations/conv_000386.json
deleted file mode 100644
index 8c791d00da46af6cc7f516bfd0964d3683a4deaf..0000000000000000000000000000000000000000
--- a/conversations/conv_000386.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-}
\ No newline at end of file
diff --git a/conversations/conv_000387.json b/conversations/conv_000387.json
deleted file mode 100644
index 5a1284a14c6b5a14f3fac464ecad771cd8bf5377..0000000000000000000000000000000000000000
--- a/conversations/conv_000387.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 30.88514291090845,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "overlap": false,
-      "utterance_id": "7850-286674",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-286674.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
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-      "speaker_id": 0,
-      "start_time": 5.292173839183305,
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-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
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-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 10.188426267550184,
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-      "duration_frames": 90449,
-      "overlap": false,
-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 15.795570724840085,
-      "end_time": 20.814850328573492,
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-      "duration_frames": 80308,
-      "overlap": true,
-      "utterance_id": "8297-275156",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275156.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.088438509106858,
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-      "utterance_id": "7850-111771",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-111771.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 26.720536831503317,
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-      "duration_frames": 66633,
-      "overlap": true,
-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 55472
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/371913_1.wav",
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-      "event_class": "laugh",
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-      "duration": 1.42,
-      "start_time": 6.35199042570368,
-      "speaker_id": "7850"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000388.json b/conversations/conv_000388.json
deleted file mode 100644
index 8af84b76876895138c32b14e2e228ff890f5e545..0000000000000000000000000000000000000000
--- a/conversations/conv_000388.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121123.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
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-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 20.241095257557536,
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-      "overlap": false,
-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 72670
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 25.381735092968842,
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-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/156110.wav",
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-  "paralinguistic_events": [
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-      "speaker_id": "84"
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-    {
-      "event_class": "laugh",
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-      "start_time": 31.10561059964343,
-      "speaker_id": "6295"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000389.json b/conversations/conv_000389.json
deleted file mode 100644
index 3b012b6f8a2980639fd5232e2b8b8d6b1e4c7660..0000000000000000000000000000000000000000
--- a/conversations/conv_000389.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.3333333333333333,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
-    },
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
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-      "real_speaker_id": "1919",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130726.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 88335
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-  ],
-  "background_events": [
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-  "paralinguistic_events": [
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-    {
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-    {
-      "event_class": "laugh",
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-      "duration": 1.08,
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-      "event_class": "cough",
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-      "speaker_id": "1919"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000390.json b/conversations/conv_000390.json
deleted file mode 100644
index b7ffab8fc518bc228304c0891f1c66e0f39d5ba1..0000000000000000000000000000000000000000
--- a/conversations/conv_000390.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149896.flac |",
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-      "duration": 1.26,
-      "start_time": 24.13797906989025,
-      "speaker_id": "1919"
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-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2277/cough/0082.wav",
-      "duration": 0.9611007690798414,
-      "start_time": 31.03889923092016,
-      "speaker_id": "2277"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000391.json b/conversations/conv_000391.json
deleted file mode 100644
index 83681032843ac2864b8bc600a0a8330d063c003f..0000000000000000000000000000000000000000
--- a/conversations/conv_000391.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 5.768680020032444,
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-      "duration_frames": 92298,
-      "overlap": false,
-      "utterance_id": "2277-149897",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149897.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 6.32246459762694,
-      "end_time": 10.49661108078466,
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-      "start_frame": 101159,
-      "duration_frames": 66786,
-      "overlap": false,
-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
-      "real_speaker_id": "6313",
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-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
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-      "position_frames": 0
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-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 22.049777546395937,
-      "end_time": 25.279628862410217,
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-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 57460
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 26.00491657027995,
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-      "duration": 3.0161553173747606,
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-      "overlap": false,
-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 29.29048470932828,
-      "end_time": 32.0,
-      "duration": 2.709515290671721,
-      "start_frame": 468647,
-      "duration_frames": 43352,
-      "overlap": false,
-      "utterance_id": "2277-149874",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 86145
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/71218_1.wav",
-      "duration": 10.67328798185941,
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-  "foreground_events": [
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
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-      "duration": 0.98,
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-      "start_time": 0,
-      "speaker_id": "2277"
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-    {
-      "event_class": "laugh",
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-    {
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-      "duration": 1.14,
-      "start_time": 30.86,
-      "speaker_id": "2277"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000392.json b/conversations/conv_000392.json
deleted file mode 100644
index ea71e25f8f5f985f9e4d17a4f9b679453b04e36c..0000000000000000000000000000000000000000
--- a/conversations/conv_000392.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
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-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
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-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
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-      "utterance_id": "7976-105575",
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-      "real_speaker_id": "7976",
-      "position_frames": 78175
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 22.673760076967348,
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-      "overlap": false,
-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 28.179216882299368,
-      "end_time": 32.0,
-      "duration": 3.820783117700632,
-      "start_frame": 450867,
-      "duration_frames": 61132,
-      "overlap": false,
-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 89672
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/272022_0.wav",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/laugh/0075.wav",
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-    {
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-    {
-      "event_class": "cough",
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-      "duration": 0.33511855336289653,
-      "start_time": 28.084799157895585,
-      "speaker_id": "1673"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000393.json b/conversations/conv_000393.json
deleted file mode 100644
index faf9417e471851ab13c09a0b067804b798108192..0000000000000000000000000000000000000000
--- a/conversations/conv_000393.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "7976-105575",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
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-    {
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-      "start_time": 30.126364000168795,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
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-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
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-  "paralinguistic_events": [
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-    {
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-      "start_time": 20.808921677761656,
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-    {
-      "event_class": "laugh",
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-      "duration": 1.14,
-      "start_time": 27.733813052427372,
-      "speaker_id": "3000"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000394.json b/conversations/conv_000394.json
deleted file mode 100644
index 2c08718915cb29af91b2e684868192bb11d7332e..0000000000000000000000000000000000000000
--- a/conversations/conv_000394.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "2277-149897",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149897.flac |",
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-      "position_frames": 0
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-    {
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\ No newline at end of file
diff --git a/conversations/conv_000395.json b/conversations/conv_000395.json
deleted file mode 100644
index eaf0e25405b9bf63e3e5a8cd8cab763e6e073628..0000000000000000000000000000000000000000
--- a/conversations/conv_000395.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
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-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000396.json b/conversations/conv_000396.json
deleted file mode 100644
index 25fcb5d2734a7dc5c730dae000b65766bcd8b5b8..0000000000000000000000000000000000000000
--- a/conversations/conv_000396.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
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-      "position_frames": 0
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-      "speaker_id": "6241"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000397.json b/conversations/conv_000397.json
deleted file mode 100644
index e6e02547663ea88e9b1ba9416d334c4de00ecd4c..0000000000000000000000000000000000000000
--- a/conversations/conv_000397.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000398.json b/conversations/conv_000398.json
deleted file mode 100644
index c5a67ee71750e547907c50e138c2ffb87ec2fb20..0000000000000000000000000000000000000000
--- a/conversations/conv_000398.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
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-      "real_speaker_id": "6295",
-      "position_frames": 84683
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/56563_1.wav",
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-  "paralinguistic_events": [
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-      "speaker_id": "6295"
-    }
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-}
\ No newline at end of file
diff --git a/conversations/conv_000399.json b/conversations/conv_000399.json
deleted file mode 100644
index a313e88bb79b27ad3c42c2f425bffc65e53e716c..0000000000000000000000000000000000000000
--- a/conversations/conv_000399.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "start_time": 0.0,
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-      "utterance_id": "3536-8226",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 4.571010574860497,
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-      "utterance_id": "6319-64726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
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-      "real_speaker_id": "2902",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 28.555949967082515,
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-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
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-      "speaker_id": "3536"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000400.json b/conversations/conv_000400.json
deleted file mode 100644
index 6bbbc97d9ebde90342a3aeb01f226d6d4a1926d6..0000000000000000000000000000000000000000
--- a/conversations/conv_000400.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-64257.flac |",
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-      "real_speaker_id": "6345",
-      "position_frames": 75291
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
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-      "utterance_id": "6345-93302",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93302.flac |",
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-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366510.wav",
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-  "foreground_events": [
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-  "paralinguistic_events": [
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-    {
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-      "duration": 1.1,
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000401.json b/conversations/conv_000401.json
deleted file mode 100644
index 2ef16a9dc7f0866b1598c37f95ebfc3faaf0b98f..0000000000000000000000000000000000000000
--- a/conversations/conv_000401.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.334990256725575,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 0
-    },
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 145110
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-      "segment_id": "seg0005",
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-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 218144
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-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Dog",
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-      "duration": 0.24006802721088435,
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-      "event_class": "Cat",
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-  "paralinguistic_events": [
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-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6295/cough/0058.wav",
-      "duration": 0.5203092843653305,
-      "start_time": 5.742833046665972,
-      "speaker_id": "6295"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3081/cough/0054.wav",
-      "duration": 1.18,
-      "start_time": 9.902320656463692,
-      "speaker_id": "3081"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3081/laugh/0010.wav",
-      "duration": 0.84,
-      "start_time": 25.9368327543712,
-      "speaker_id": "3081"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000402.json b/conversations/conv_000402.json
deleted file mode 100644
index ff2e3cc5952747493ac3f53ab63909ee6c55feb5..0000000000000000000000000000000000000000
--- a/conversations/conv_000402.json
+++ /dev/null
@@ -1,108 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 1,
-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 5.873699396347679,
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-      "overlap": false,
-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
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-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 12.4193436700174,
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-      "duration": 3.713791022562281,
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-      "overlap": false,
-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 16.345407265545877,
-      "end_time": 23.086116023566888,
-      "duration": 6.740708758021009,
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-      "duration_frames": 107851,
-      "overlap": false,
-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 23.44442149840429,
-      "end_time": 26.97140887827564,
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-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 28.47334331297302,
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-      "duration": 3.5266566870269784,
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-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 82787
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/406067_1.wav",
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-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/371615_1.wav",
-      "duration": 4.3925439928985615,
-      "start_time": 26.716159563303865
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-  ],
-  "paralinguistic_events": []
-}
\ No newline at end of file
diff --git a/conversations/conv_000403.json b/conversations/conv_000403.json
deleted file mode 100644
index 0b58937c7a01c36bf2abb2905e2fb1f265057285..0000000000000000000000000000000000000000
--- a/conversations/conv_000403.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "start_time": 0.0,
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-      "utterance_id": "8842-302201",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
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-      "segment_id": "seg0003",
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-      "start_time": 14.708442644011924,
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-      "utterance_id": "5338-24640",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
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-      "segment_id": "seg0004",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
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-      "segment_id": "seg0005",
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-      "utterance_id": "8842-304647",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-304647.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 31.130916495744202,
-      "end_time": 32.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24640.flac |",
-      "real_speaker_id": "5338",
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-  ],
-  "background_events": [
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-      "duration": 1.62,
-      "start_time": 5.662442841554997,
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-      "speaker_id": "8842"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000404.json b/conversations/conv_000404.json
deleted file mode 100644
index 3c2fa0d3f5853b91dab4de09d43dbb7e271070a3..0000000000000000000000000000000000000000
--- a/conversations/conv_000404.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "8842-302196",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302196.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
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-      "utterance_id": "5895-34629",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0003",
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-      "utterance_id": "8842-304647",
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 21.936949026161656,
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-    {
-      "segment_id": "seg0005",
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-      "utterance_id": "5895-34622",
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-  "background_events": [],
-  "foreground_events": [
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-  "paralinguistic_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000405.json b/conversations/conv_000405.json
deleted file mode 100644
index b641d2926b293f00d0540293976f7884dcc1a9fb..0000000000000000000000000000000000000000
--- a/conversations/conv_000405.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 5.035826670290692,
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-      "overlap": false,
-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "segment_id": "seg0002",
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-      "utterance_id": "1673-143396",
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-    }
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-}
\ No newline at end of file
diff --git a/conversations/conv_000406.json b/conversations/conv_000406.json
deleted file mode 100644
index 87d22f4a7a7f2709ddc21e29ddb0430b5db075f5..0000000000000000000000000000000000000000
--- a/conversations/conv_000406.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
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-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
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-      "speaker_id": 0,
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-      "real_speaker_id": "6241",
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-      "speaker_id": 2,
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-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 28.651292324025963,
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-  "background_events": [],
-  "foreground_events": [
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\ No newline at end of file
diff --git a/conversations/conv_000407.json b/conversations/conv_000407.json
deleted file mode 100644
index 54504325d40c7471fc180aff55c2656b8dba4950..0000000000000000000000000000000000000000
--- a/conversations/conv_000407.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
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-      "utterance_id": "652-130737",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-130737.flac |",
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-      "position_frames": 0
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-  "foreground_events": [
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000408.json b/conversations/conv_000408.json
deleted file mode 100644
index 1cc587dd9beff664e620ddbd211c61bc7a9da009..0000000000000000000000000000000000000000
--- a/conversations/conv_000408.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-    {
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-}
\ No newline at end of file
diff --git a/conversations/conv_000409.json b/conversations/conv_000409.json
deleted file mode 100644
index ae6dfb55d02b32ff13388e41c49e5517ffb1a651..0000000000000000000000000000000000000000
--- a/conversations/conv_000409.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "real_speaker_id": "777",
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-      "segment_id": "seg0005",
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-      "start_time": 30.94,
-      "speaker_id": "3536"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000410.json b/conversations/conv_000410.json
deleted file mode 100644
index 8471eff782bfd99306b6f8a3c0bc8bcc5c5e46a3..0000000000000000000000000000000000000000
--- a/conversations/conv_000410.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.66009254002734,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
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-  "foreground_events": [
-    {
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\ No newline at end of file
diff --git a/conversations/conv_000411.json b/conversations/conv_000411.json
deleted file mode 100644
index 438803f14306dc8ef335b3038f2a125aaec06980..0000000000000000000000000000000000000000
--- a/conversations/conv_000411.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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\ No newline at end of file
diff --git a/conversations/conv_000412.json b/conversations/conv_000412.json
deleted file mode 100644
index c88ac157e9feaaa322286d40c79c74f262a65776..0000000000000000000000000000000000000000
--- a/conversations/conv_000412.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "num_segments": 5,
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-  "num_speakers": 3,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000413.json b/conversations/conv_000413.json
deleted file mode 100644
index 7c07a06be2befc6057f32a6817c71c89bb2e5034..0000000000000000000000000000000000000000
--- a/conversations/conv_000413.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
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-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 144576
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 30.042890969973442,
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-      "duration": 1.9571090300265581,
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-      "duration_frames": 31313,
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-      "utterance_id": "6241-61943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/239565.wav",
-      "duration": 19.282605584385117,
-      "start_time": 10.761725845865245
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/213889_1.wav",
-      "duration": 1.0652834467120182,
-      "start_time": 12.091412723299813
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-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/340831.wav",
-      "duration": 4.1391834004460755,
-      "start_time": 12.05654063973551
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/251/laugh/0055.wav",
-      "duration": 1.2,
-      "start_time": 4.03797848969517,
-      "speaker_id": "251"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/251/cough/0035.wav",
-      "duration": 0.7605085722424636,
-      "start_time": 4.525245678014923,
-      "speaker_id": "251"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/laugh/0009.wav",
-      "duration": 1.0724199580275737,
-      "start_time": 11.854831875080524,
-      "speaker_id": "3853"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6241/cough/0000.wav",
-      "duration": 0.86,
-      "start_time": 31.05751593617978,
-      "speaker_id": "6241"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000414.json b/conversations/conv_000414.json
deleted file mode 100644
index 3a4633f97adff3498f1cb6d0bee65a8ba4ad434f..0000000000000000000000000000000000000000
--- a/conversations/conv_000414.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 3.584839741034015,
-      "duration": 3.584839741034015,
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-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 4.721006527164723,
-      "end_time": 8.503039283990375,
-      "duration": 3.7820327568256538,
-      "start_frame": 75536,
-      "duration_frames": 60512,
-      "overlap": true,
-      "utterance_id": "5536-43363",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43363.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 9.434716251140536,
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-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 57357
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-      "speaker_id": 0,
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
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-      "utterance_id": "5536-43359",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
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-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 63200
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 30.05732428305507,
-      "end_time": 32.0,
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-      "duration_frames": 31082,
-      "overlap": false,
-      "utterance_id": "5536-43359",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 96060
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/340831.wav",
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-  "paralinguistic_events": [
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-    {
-      "event_class": "laugh",
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-      "duration": 1.36,
-      "start_time": 4.894296993690157,
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/laugh/0037.wav",
-      "duration": 1.28,
-      "start_time": 23.071620304328185,
-      "speaker_id": "3000"
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-      "event_class": "cough",
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-      "speaker_id": "5536"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000415.json b/conversations/conv_000415.json
deleted file mode 100644
index ac5305342334b19c73c22d5b6f02f8d008055f8c..0000000000000000000000000000000000000000
--- a/conversations/conv_000415.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 4.7746758630666655,
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-      "utterance_id": "6319-57405",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
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-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
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-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 16.309277003217908,
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-      "overlap": false,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
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-      "segment_id": "seg0004",
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-      "utterance_id": "2412-153947",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.34212450969451,
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-      "duration": 4.657875490305489,
-      "start_frame": 437473,
-      "duration_frames": 74526,
-      "overlap": false,
-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/589_1.wav",
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-  "foreground_events": [
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/371914_1.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0028.wav",
-      "duration": 1.3404212736000523,
-      "start_time": 0,
-      "speaker_id": "1988"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/laugh/0030.wav",
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-      "speaker_id": "2412"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2412/laugh/0046.wav",
-      "duration": 1.26,
-      "start_time": 27.94763817312958,
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-    {
-      "event_class": "cough",
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-      "start_time": 31.67619797044134,
-      "speaker_id": "2412"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000416.json b/conversations/conv_000416.json
deleted file mode 100644
index ab268c73c139b44b8edde83451466a0b8bc8029d..0000000000000000000000000000000000000000
--- a/conversations/conv_000416.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
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-      "position_frames": 0
-    },
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-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
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-    {
-      "segment_id": "seg0003",
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-    {
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-    {
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-    {
-      "segment_id": "seg0006",
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-      "start_time": 30.84403864430398,
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-      "duration": 1.1559613556960215,
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-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
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-      "position_frames": 104926
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-  "background_events": [],
-  "foreground_events": [
-    {
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-      "event_class": "Dog",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6295/laugh/0044.wav",
-      "duration": 0.5897690578793704,
-      "start_time": 10.361837455667674,
-      "speaker_id": "6295"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000417.json b/conversations/conv_000417.json
deleted file mode 100644
index e488a7f14b043f738eb186653dabe3dec264a821..0000000000000000000000000000000000000000
--- a/conversations/conv_000417.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.888135017084203,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 6.2572544880733965,
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-      "utterance_id": "6345-64257",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-64257.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
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-      "start_time": 11.696845259318987,
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-      "duration_frames": 91533,
-      "overlap": false,
-      "utterance_id": "2277-149897",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149897.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 17.838647616990343,
-      "end_time": 24.293248348410568,
-      "duration": 6.454600731420225,
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-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 88406
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 23.696217823393237,
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-      "utterance_id": "2277-149897",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149897.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 91533
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 28.051111591498948,
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-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 191679
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/146200_0.wav",
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-  "paralinguistic_events": [
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-      "duration": 1.2,
-      "start_time": 25.147930269365197,
-      "speaker_id": "2277"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000418.json b/conversations/conv_000418.json
deleted file mode 100644
index d014ada59904d1c5539a53308894ceb73c362fb1..0000000000000000000000000000000000000000
--- a/conversations/conv_000418.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
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-      "speaker_id": 1,
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-      "utterance_id": "7850-286674",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-286674.flac |",
-      "real_speaker_id": "7850",
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-      "segment_id": "seg0003",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 97785
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 24.939652769548903,
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-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 180758
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 30.41246340043874,
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-      "duration": 1.5875365995612611,
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/371918.wav",
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-  "paralinguistic_events": [
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-      "duration": 1.0,
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-      "speaker_id": "84"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000419.json b/conversations/conv_000419.json
deleted file mode 100644
index da1c48c6f8d99078941ffc2c188b902fa1c1cf2f..0000000000000000000000000000000000000000
--- a/conversations/conv_000419.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.592401354298715,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "5536-43359",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
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-      "real_speaker_id": "3000",
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-  "background_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000420.json b/conversations/conv_000420.json
deleted file mode 100644
index e4b99eb3255eab5e74e5ffedc15ea39489e48584..0000000000000000000000000000000000000000
--- a/conversations/conv_000420.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
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-      "start_time": 16.54414807377554,
-      "speaker_id": "6295"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/laugh/0025.wav",
-      "duration": 0.9045257355691275,
-      "start_time": 26.705161777268785,
-      "speaker_id": "1462"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000421.json b/conversations/conv_000421.json
deleted file mode 100644
index ab193c10187561dd4b11326aaac82477f5970a9c..0000000000000000000000000000000000000000
--- a/conversations/conv_000421.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.088027452466747,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 4.641726633579366,
-      "duration": 4.641726633579366,
-      "start_frame": 0,
-      "duration_frames": 74267,
-      "overlap": false,
-      "utterance_id": "1462-170142",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170142.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 5.014590551980239,
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-      "utterance_id": "1462-170142",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170142.flac |",
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-      "position_frames": 74267
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-      "overlap": false,
-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 17.572332168002134,
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-      "duration_frames": 65636,
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-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 81984
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.719296410856355,
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-      "overlap": false,
-      "utterance_id": "1462-170145",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 28.722924370967313,
-      "end_time": 31.088027452466747,
-      "duration": 2.3651030814994343,
-      "start_frame": 459566,
-      "duration_frames": 37841,
-      "overlap": true,
-      "utterance_id": "2035-147961",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/71936.wav",
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-  "foreground_events": [
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/laugh/0071.wav",
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-      "start_time": 11.71247531755419,
-      "speaker_id": "1462"
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-      "event_class": "cough",
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-      "duration": 0.8,
-      "start_time": 13.460861847951717,
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-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2035/laugh/0053.wav",
-      "duration": 0.88,
-      "start_time": 20.082393994137046,
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2035/cough/0014.wav",
-      "duration": 0.92,
-      "start_time": 21.783187123703346,
-      "speaker_id": "2035"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000422.json b/conversations/conv_000422.json
deleted file mode 100644
index 68190d239e56380beff25832dab4a9c3cd596261..0000000000000000000000000000000000000000
--- a/conversations/conv_000422.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 3.2573751101675894,
-      "duration": 3.2573751101675894,
-      "start_frame": 0,
-      "duration_frames": 52118,
-      "overlap": false,
-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 3.86067263248413,
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-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
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-      "overlap": false,
-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 52118
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 16.929392789371956,
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-      "duration": 5.539373254693751,
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-      "duration_frames": 88629,
-      "overlap": true,
-      "utterance_id": "2428-83699",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 23.247802797165175,
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-      "duration": 6.927354982606581,
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-      "overlap": false,
-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 30.487820353409333,
-      "end_time": 32.0,
-      "duration": 1.512179646590667,
-      "start_frame": 487805,
-      "duration_frames": 24194,
-      "overlap": false,
-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/71936.wav",
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-      "start_time": 2.0383745299980425
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-  "foreground_events": [
-    {
-      "event_class": "Dog",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dog/59513_6.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0057.wav",
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-      "speaker_id": "1988"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2428/laugh/0061.wav",
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-      "speaker_id": "2428"
-    },
-    {
-      "event_class": "cough",
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-      "duration": 1.1,
-      "start_time": 8.638289932026797,
-      "speaker_id": "2428"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0070.wav",
-      "duration": 0.9095298821543303,
-      "start_time": 22.234839627940342,
-      "speaker_id": "1988"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/cough/0047.wav",
-      "duration": 1.0177980180750072,
-      "start_time": 30.326679803083664,
-      "speaker_id": "1988"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000423.json b/conversations/conv_000423.json
deleted file mode 100644
index bbd250f9ad19e48c282ac10dc7aaa22c773fc3bf..0000000000000000000000000000000000000000
--- a/conversations/conv_000423.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.050761434865382,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "8842-302201",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
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-      "utterance_id": "8842-302203",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302203.flac |",
-      "real_speaker_id": "8842",
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
-    },
-    {
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-    {
-      "segment_id": "seg0005",
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-      "duration_frames": 62949,
-      "overlap": false,
-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 61541
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/156110.wav",
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-    {
-      "event_class": "Dishes",
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-  "paralinguistic_events": [
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-    {
-      "event_class": "cough",
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3170/cough/0034.wav",
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-      "speaker_id": "3170"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000424.json b/conversations/conv_000424.json
deleted file mode 100644
index 149393333f002f1a75ce2ff6f8559881e1baab91..0000000000000000000000000000000000000000
--- a/conversations/conv_000424.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
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-      "position_frames": 0
-    },
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
-      "real_speaker_id": "6241",
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-      "segment_id": "seg0005",
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-      "start_time": 28.625513043753053,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 231376
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-  "background_events": [
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-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/81574.wav",
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/64009.wav",
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-      "duration": 1.36,
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-    {
-      "event_class": "cough",
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-      "duration": 0.74,
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-      "event_class": "laugh",
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-      "duration": 0.9514964715254997,
-      "start_time": 27.038606778808308,
-      "speaker_id": "6241"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000425.json b/conversations/conv_000425.json
deleted file mode 100644
index cdaf43b4db28c7dcf45cb6a56ba5986c8e275f6b..0000000000000000000000000000000000000000
--- a/conversations/conv_000425.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 4.333639599659193,
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-      "utterance_id": "5895-34629",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.028703085442633,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
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-      "position_frames": 0
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-      "utterance_id": "5694-64029",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64029.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 16.061175247515415,
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-      "duration": 5.844454486705523,
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-      "duration_frames": 93511,
-      "overlap": true,
-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 76897
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 23.397410107362926,
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-      "duration": 5.985066445995098,
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-      "utterance_id": "5694-64025",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
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-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 29.87978304291272,
-      "end_time": 32.0,
-      "duration": 2.1202169570872798,
-      "start_frame": 478076,
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-      "overlap": false,
-      "utterance_id": "5895-34615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
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-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/271460.wav",
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-      "start_time": 14.8472866829828
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-  ],
-  "paralinguistic_events": []
-}
\ No newline at end of file
diff --git a/conversations/conv_000426.json b/conversations/conv_000426.json
deleted file mode 100644
index f3f3c5b6a3f75e69a7f665b53026a562dc7a3713..0000000000000000000000000000000000000000
--- a/conversations/conv_000426.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "5694-64025",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 7.540405350554018,
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-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
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-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
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-      "real_speaker_id": "5694",
-      "position_frames": 194703
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-      "duration": 2.781046336062662,
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-      "duration_frames": 44496,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 144997
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/170745.wav",
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-      "speaker_id": "5694"
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-    {
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-      "speaker_id": "422"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000427.json b/conversations/conv_000427.json
deleted file mode 100644
index c278e37ed62b85c5e3a787dcf813350695492c28..0000000000000000000000000000000000000000
--- a/conversations/conv_000427.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "speaker_id": 0,
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-      "end_time": 6.97057943770313,
-      "duration": 6.97057943770313,
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-      "overlap": false,
-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 7.694468054998386,
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-      "duration_frames": 59086,
-      "overlap": false,
-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
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-    },
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-      "overlap": true,
-      "utterance_id": "7976-105575",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
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-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
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-    {
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-      "real_speaker_id": "7976",
-      "position_frames": 0
-    }
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-  "background_events": [
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-    {
-      "event_class": "laugh",
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-      "speaker_id": "1988"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/laugh/0039.wav",
-      "duration": 1.3,
-      "start_time": 22.940291392573723,
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-    {
-      "event_class": "cough",
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-    {
-      "event_class": "cough",
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-      "duration": 0.36542578674177906,
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-      "speaker_id": "7976"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000428.json b/conversations/conv_000428.json
deleted file mode 100644
index 5ff19f32155a6fe772e3e9735156431497224027..0000000000000000000000000000000000000000
--- a/conversations/conv_000428.json
+++ /dev/null
@@ -1,102 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 5.137592007658947,
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
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-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
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-      "segment_id": "seg0003",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 131371
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-  "background_events": [],
-  "foreground_events": [
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/371615_1.wav",
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-  ],
-  "paralinguistic_events": []
-}
\ No newline at end of file
diff --git a/conversations/conv_000429.json b/conversations/conv_000429.json
deleted file mode 100644
index f103a0975d791c7800862f7ff75ddd0992f9610e..0000000000000000000000000000000000000000
--- a/conversations/conv_000429.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "7976-105575",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
-      "real_speaker_id": "7976",
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-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
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-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
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-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
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-  "foreground_events": [
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-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/56563_1.wav",
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-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/379144_0.wav",
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\ No newline at end of file
diff --git a/conversations/conv_000430.json b/conversations/conv_000430.json
deleted file mode 100644
index 4eb4b1cee9c426db84c209ea0bdab6c75113a786..0000000000000000000000000000000000000000
--- a/conversations/conv_000430.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
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\ No newline at end of file
diff --git a/conversations/conv_000431.json b/conversations/conv_000431.json
deleted file mode 100644
index 036075780162fe9b9b162109b52b746730029f71..0000000000000000000000000000000000000000
--- a/conversations/conv_000431.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000432.json b/conversations/conv_000432.json
deleted file mode 100644
index 0cc77221bc3dc756d7f799e4ccff2d7f47e34164..0000000000000000000000000000000000000000
--- a/conversations/conv_000432.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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\ No newline at end of file
diff --git a/conversations/conv_000433.json b/conversations/conv_000433.json
deleted file mode 100644
index e2cb0e55404b6e3a5a66b93500fffd3ac087ae0a..0000000000000000000000000000000000000000
--- a/conversations/conv_000433.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
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-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
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-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Dog",
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\ No newline at end of file
diff --git a/conversations/conv_000434.json b/conversations/conv_000434.json
deleted file mode 100644
index 8a2ea9110d94be4c59801b8864c7ed957de8fe69..0000000000000000000000000000000000000000
--- a/conversations/conv_000434.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "speaker_id": "84"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000435.json b/conversations/conv_000435.json
deleted file mode 100644
index 5a9507abfa7efebb4c80e2660b62f83d95de2c2d..0000000000000000000000000000000000000000
--- a/conversations/conv_000435.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
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-}
\ No newline at end of file
diff --git a/conversations/conv_000436.json b/conversations/conv_000436.json
deleted file mode 100644
index 7bae4f11fcb098f46c3edeb2c22856f0b6c90587..0000000000000000000000000000000000000000
--- a/conversations/conv_000436.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
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-      "duration_frames": 48432,
-      "overlap": false,
-      "utterance_id": "8842-302201",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302201.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 58189
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 26.8626832284402,
-      "end_time": 32.0,
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-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 161801
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/233645_1.wav",
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-      "event_class": "Vacuum_cleaner",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/laugh/0022.wav",
-      "duration": 1.1728714582742013,
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-      "speaker_id": "8842"
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-    {
-      "event_class": "laugh",
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-      "duration": 0.9090527747053101,
-      "start_time": 16.422694562865995,
-      "speaker_id": "3752"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3752/laugh/0028.wav",
-      "duration": 1.08,
-      "start_time": 25.576159680255582,
-      "speaker_id": "3752"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000437.json b/conversations/conv_000437.json
deleted file mode 100644
index 34ad734f35c2ae2ce2bd7c4228979704aaaf8c92..0000000000000000000000000000000000000000
--- a/conversations/conv_000437.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.053144111533109,
-      "duration": 5.053144111533109,
-      "start_frame": 0,
-      "duration_frames": 80850,
-      "overlap": false,
-      "utterance_id": "6319-64726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 5.55312398566597,
-      "end_time": 9.408875574054768,
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-      "utterance_id": "5694-64025",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
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-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
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-      "overlap": false,
-      "utterance_id": "5694-64029",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64029.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 19.718583474411037,
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-      "overlap": false,
-      "utterance_id": "6319-57405",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 24.03463459702063,
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-      "utterance_id": "5694-64038",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 31.199965527396305,
-      "end_time": 32.0,
-      "duration": 0.800034472603695,
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-      "utterance_id": "5694-64029",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64029.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 66620
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-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366511.wav",
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-  "foreground_events": [
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-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/35021_2.wav",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
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-      "speaker_id": "5694"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000438.json b/conversations/conv_000438.json
deleted file mode 100644
index 254353d93162bfc295c9bef472edcb090dde750d..0000000000000000000000000000000000000000
--- a/conversations/conv_000438.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.2857142857142857,
-  "segments": [
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-      "start_time": 0.0,
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-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 4.845651645479201,
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-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
-      "real_speaker_id": "6313",
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-      "segment_id": "seg0002",
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-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
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-      "segment_id": "seg0003",
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-      "start_time": 13.805808866166789,
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-      "position_frames": 74264
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 70749
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-    {
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 123328
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-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 29.29044715635005,
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-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
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-  ],
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-  "foreground_events": [
-    {
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/72558_5.wav",
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-  "paralinguistic_events": [
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6313/laugh/0090.wav",
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-      "start_time": 19.078592681029416,
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1673/laugh/0034.wav",
-      "duration": 0.5166103136981313,
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000439.json b/conversations/conv_000439.json
deleted file mode 100644
index e9702c46e9807ec324cbfbbb25440c28f262a57b..0000000000000000000000000000000000000000
--- a/conversations/conv_000439.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.63488016032028,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
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-      "overlap": false,
-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
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-    {
-      "segment_id": "seg0004",
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-      "utterance_id": "6319-275224",
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-      "real_speaker_id": "6319",
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "position_frames": 0
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-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/59326.wav",
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-  "foreground_events": [
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-    {
-      "event_class": "Vacuum_cleaner",
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-  "paralinguistic_events": [
-    {
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6319/cough/0048.wav",
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-    {
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6319/cough/0019.wav",
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-      "speaker_id": "6319"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000440.json b/conversations/conv_000440.json
deleted file mode 100644
index 0f1f9588823a8b0b16965fedbc9521f8d1dbd992..0000000000000000000000000000000000000000
--- a/conversations/conv_000440.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.92974690735276,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "speaker_id": "2902"
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\ No newline at end of file
diff --git a/conversations/conv_000441.json b/conversations/conv_000441.json
deleted file mode 100644
index b14832160403f37b0f129a1fa751d7a3389cc701..0000000000000000000000000000000000000000
--- a/conversations/conv_000441.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-50561.flac |",
-      "real_speaker_id": "174",
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-  "background_events": [],
-  "foreground_events": [
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\ No newline at end of file
diff --git a/conversations/conv_000442.json b/conversations/conv_000442.json
deleted file mode 100644
index d8674011ca347350cd79c8acd1dbd1ba9cc25f0c..0000000000000000000000000000000000000000
--- a/conversations/conv_000442.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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\ No newline at end of file
diff --git a/conversations/conv_000443.json b/conversations/conv_000443.json
deleted file mode 100644
index c3d8e9c4017dc9b71b486a17530a59a41716551d..0000000000000000000000000000000000000000
--- a/conversations/conv_000443.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
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-}
\ No newline at end of file
diff --git a/conversations/conv_000444.json b/conversations/conv_000444.json
deleted file mode 100644
index 3fcabcb5d11fa62d6cd56c9c9e0338b38fed96a1..0000000000000000000000000000000000000000
--- a/conversations/conv_000444.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 30.927927179768464,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
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-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/271460.wav",
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\ No newline at end of file
diff --git a/conversations/conv_000445.json b/conversations/conv_000445.json
deleted file mode 100644
index b6aae6dac7118e79502057fa8c21bc146e141170..0000000000000000000000000000000000000000
--- a/conversations/conv_000445.json
+++ /dev/null
@@ -1,159 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
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-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
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-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
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-      "position_frames": 0
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-  "background_events": [
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\ No newline at end of file
diff --git a/conversations/conv_000446.json b/conversations/conv_000446.json
deleted file mode 100644
index fc5dcc707f3c47866dbbada266f030c4e0d48610..0000000000000000000000000000000000000000
--- a/conversations/conv_000446.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 3,
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-      "utterance_id": "3536-8226",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000447.json b/conversations/conv_000447.json
deleted file mode 100644
index 1d8c6be572e00add5eaadadb4c68f01f6be62c01..0000000000000000000000000000000000000000
--- a/conversations/conv_000447.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "position_frames": 87167
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-  "background_events": [],
-  "foreground_events": [
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000448.json b/conversations/conv_000448.json
deleted file mode 100644
index 84360a3815588181f8da37e0a91c3fe5d64811f7..0000000000000000000000000000000000000000
--- a/conversations/conv_000448.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.557500941937087,
-      "duration": 5.557500941937087,
-      "start_frame": 0,
-      "duration_frames": 88920,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 6.366245187194462,
-      "end_time": 12.881916651255741,
-      "duration": 6.515671464061279,
-      "start_frame": 101859,
-      "duration_frames": 104250,
-      "overlap": false,
-      "utterance_id": "7976-105575",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 12.612855478842755,
-      "end_time": 17.85336792871079,
-      "duration": 5.240512449868033,
-      "start_frame": 201805,
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-      "overlap": true,
-      "utterance_id": "174-168635",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-168635.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 19.259496500320168,
-      "end_time": 25.26244524981749,
-      "duration": 6.002948749497319,
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-      "duration_frames": 96047,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 88920
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 25.908470418185622,
-      "end_time": 31.244582947204123,
-      "duration": 5.336112529018501,
-      "start_frame": 414535,
-      "duration_frames": 85377,
-      "overlap": false,
-      "utterance_id": "174-84280",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 31.378104733265296,
-      "end_time": 32.0,
-      "duration": 0.621895266734704,
-      "start_frame": 502049,
-      "duration_frames": 9950,
-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 184967
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Frying/417995.wav",
-      "duration": 2.299496543201688,
-      "start_time": 9.9913758604464
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-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/371920_2.wav",
-      "duration": 0.6760544217687074,
-      "start_time": 1.1789421511124039
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7976/laugh/0039.wav",
-      "duration": 0.9350282547286779,
-      "start_time": 11.906763647705809,
-      "speaker_id": "7976"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/174/laugh/0016.wav",
-      "duration": 1.42,
-      "start_time": 17.880599908023353,
-      "speaker_id": "174"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3576/cough/0029.wav",
-      "duration": 0.96,
-      "start_time": 23.56698132743628,
-      "speaker_id": "3576"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/174/laugh/0003.wav",
-      "duration": 1.44,
-      "start_time": 30.56,
-      "speaker_id": "174"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000449.json b/conversations/conv_000449.json
deleted file mode 100644
index 2e4766c70ba4310c469260ff8e86ec7c5fbb9dc5..0000000000000000000000000000000000000000
--- a/conversations/conv_000449.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 4.8733643832187115,
-      "duration": 4.8733643832187115,
-      "start_frame": 0,
-      "duration_frames": 77973,
-      "overlap": false,
-      "utterance_id": "8297-275155",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275155.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 5.549807789331945,
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-      "duration": 4.655285368326363,
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-      "overlap": false,
-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 10.550992746422864,
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-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
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-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 74484
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 21.87750656691897,
-      "end_time": 26.40925667470622,
-      "duration": 4.531750107787251,
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-      "overlap": false,
-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 77969
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 27.55922820526846,
-      "end_time": 32.0,
-      "duration": 4.440771794731539,
-      "start_frame": 440947,
-      "duration_frames": 71052,
-      "overlap": false,
-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 158561
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/271460.wav",
-      "duration": 16.848412698412698,
-      "start_time": 3.865085574758035
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/50114.wav",
-      "duration": 0.6340362811791384,
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8297/cough/0018.wav",
-      "duration": 0.32399279041001194,
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3081/cough/0016.wav",
-      "duration": 1.22,
-      "start_time": 11.80950297344321,
-      "speaker_id": "3081"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000450.json b/conversations/conv_000450.json
deleted file mode 100644
index 4a698522b8fe7ffe1cd802e69486c965341061e8..0000000000000000000000000000000000000000
--- a/conversations/conv_000450.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "speaker_id": 2,
-      "start_time": 0.0,
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-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "1462-170145",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 4.412852933751433,
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-      "duration": 3.7813924186144794,
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-      "duration_frames": 60502,
-      "overlap": false,
-      "utterance_id": "6241-61946",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
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-    {
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-      "utterance_id": "2277-149897",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149897.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
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-      "segment_id": "seg0003",
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-      "real_speaker_id": "2277",
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-    {
-      "segment_id": "seg0006",
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-      "position_frames": 79242
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-  "background_events": [
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-  "foreground_events": [
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-    {
-      "event_class": "Dog",
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-  "paralinguistic_events": [
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-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/cough/0014.wav",
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-    {
-      "event_class": "laugh",
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-      "duration": 1.04,
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000451.json b/conversations/conv_000451.json
deleted file mode 100644
index 41cca345ce2e0f0d22ae5f23ee1b5641ea97ea82..0000000000000000000000000000000000000000
--- a/conversations/conv_000451.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
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-    },
-    {
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-      "utterance_id": "3853-163249",
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-  "foreground_events": [
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-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/329896_10.wav",
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/laugh/0008.wav",
-      "duration": 0.5689007105836773,
-      "start_time": 3.0986886571796735,
-      "speaker_id": "3853"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0071.wav",
-      "duration": 0.6542265413436512,
-      "start_time": 22.593982385179785,
-      "speaker_id": "1988"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3576/laugh/0001.wav",
-      "duration": 0.88,
-      "start_time": 24.84974708044894,
-      "speaker_id": "3576"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3576/cough/0001.wav",
-      "duration": 0.9272420450872387,
-      "start_time": 29.758931537030225,
-      "speaker_id": "3576"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000452.json b/conversations/conv_000452.json
deleted file mode 100644
index 8f9bb232332cbb26a4036587bb23edb8d7b06c84..0000000000000000000000000000000000000000
--- a/conversations/conv_000452.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.15820658808152,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.192287274889421,
-      "duration": 5.192287274889421,
-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "2803-154320",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154320.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.3378764333360404,
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-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 12.648576436526772,
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-      "duration_frames": 58865,
-      "overlap": false,
-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 17.710889717426706,
-      "end_time": 22.95030310399977,
-      "duration": 5.239413386573062,
-      "start_frame": 283374,
-      "duration_frames": 83830,
-      "overlap": false,
-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 23.33804153300573,
-      "end_time": 28.71107874928286,
-      "duration": 5.37303721627713,
-      "start_frame": 373408,
-      "duration_frames": 85968,
-      "overlap": false,
-      "utterance_id": "7850-286674",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-286674.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 28.45074363616133,
-      "end_time": 31.15820658808152,
-      "duration": 2.7074629519201885,
-      "start_frame": 455211,
-      "duration_frames": 43319,
-      "overlap": true,
-      "utterance_id": "2803-154328",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/91517.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2803/cough/0049.wav",
-      "duration": 0.31842733365039666,
-      "start_time": 0.6609781333614203,
-      "speaker_id": "2803"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7850/laugh/0000.wav",
-      "duration": 0.5134675763850605,
-      "start_time": 14.611755240970405,
-      "speaker_id": "7850"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000453.json b/conversations/conv_000453.json
deleted file mode 100644
index 9a2d8079d28a7a226d2ed610793b796f613f58d8..0000000000000000000000000000000000000000
--- a/conversations/conv_000453.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.255596893045674,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "speaker_id": 2,
-      "start_time": 0.0,
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-      "duration": 6.822251258296844,
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-      "overlap": false,
-      "utterance_id": "8297-275155",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275155.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 7.3059672221181815,
-      "end_time": 10.47205991970268,
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-      "start_frame": 116895,
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-      "overlap": false,
-      "utterance_id": "2277-149874",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
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-      "start_time": 11.09583087477743,
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-      "overlap": false,
-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 16.043365019524646,
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-      "overlap": false,
-      "utterance_id": "8297-275155",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275155.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 109156
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 21.098220512157692,
-      "end_time": 25.70627614470952,
-      "duration": 4.608055632551829,
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-      "utterance_id": "2277-149896",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149896.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 26.413360797958127,
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-      "duration_frames": 68770,
-      "overlap": false,
-      "utterance_id": "1988-148538",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-148538.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 30.423640266564533,
-      "end_time": 31.255596893045674,
-      "duration": 0.8319566264811407,
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-      "duration_frames": 13311,
-      "overlap": true,
-      "utterance_id": "2277-149896",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149896.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 73728
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/232915.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8297/laugh/0038.wav",
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-      "speaker_id": "8297"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2277/laugh/0016.wav",
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/cough/0002.wav",
-      "duration": 0.5151354115818148,
-      "start_time": 25.79196193832031,
-      "speaker_id": "1988"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2277/laugh/0012.wav",
-      "duration": 1.2,
-      "start_time": 30.423640266564533,
-      "speaker_id": "2277"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2277/cough/0090.wav",
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-      "start_time": 29.88708212758464,
-      "speaker_id": "2277"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000454.json b/conversations/conv_000454.json
deleted file mode 100644
index 159225de3c29c6980a66931383b4e32a7f4b6c22..0000000000000000000000000000000000000000
--- a/conversations/conv_000454.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
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-      "speaker_id": 2,
-      "start_time": 7.809710457800225,
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-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0002",
-      "speaker_id": 1,
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-      "start_frame": 201351,
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-      "overlap": false,
-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 18.664120180579022,
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-      "duration_frames": 97739,
-      "overlap": true,
-      "utterance_id": "1988-147956",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-147956.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 25.90300313884561,
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-      "duration": 3.0559261405904463,
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-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 29.419389614994962,
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-      "duration": 2.5806103850050377,
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-      "overlap": false,
-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/591.wav",
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-  "foreground_events": [
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-  "paralinguistic_events": [
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-      "speaker_id": "7976"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/251/laugh/0010.wav",
-      "duration": 1.38,
-      "start_time": 27.295763142603903,
-      "speaker_id": "251"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0015.wav",
-      "duration": 0.5108366970417918,
-      "start_time": 28.73841824268049,
-      "speaker_id": "1988"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/cough/0004.wav",
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-      "start_time": 28.153818340198093,
-      "speaker_id": "1988"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000455.json b/conversations/conv_000455.json
deleted file mode 100644
index 60e9833262f275fead3843e654c80dc16dde249d..0000000000000000000000000000000000000000
--- a/conversations/conv_000455.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 1,
-      "start_time": 0.0,
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-      "duration": 5.800749868718775,
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-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
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-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
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-      "utterance_id": "1272-135031",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-135031.flac |",
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-      "position_frames": 0
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-    {
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-      "utterance_id": "251-137823",
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\ No newline at end of file
diff --git a/conversations/conv_000456.json b/conversations/conv_000456.json
deleted file mode 100644
index 075ddeee4f3eb8ed848d6cbd68a8cce264faa4a3..0000000000000000000000000000000000000000
--- a/conversations/conv_000456.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
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-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
-      "real_speaker_id": "6313",
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-  "foreground_events": [
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\ No newline at end of file
diff --git a/conversations/conv_000457.json b/conversations/conv_000457.json
deleted file mode 100644
index 99f8f924680e1d56d717c07cffd5af455ec6ca6b..0000000000000000000000000000000000000000
--- a/conversations/conv_000457.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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\ No newline at end of file
diff --git a/conversations/conv_000458.json b/conversations/conv_000458.json
deleted file mode 100644
index 53bbb011e3a0b5abae45d0e97422483c586a5a1e..0000000000000000000000000000000000000000
--- a/conversations/conv_000458.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000459.json b/conversations/conv_000459.json
deleted file mode 100644
index fffdf75b9fe15c5f23bea5d52bee7c234d31254a..0000000000000000000000000000000000000000
--- a/conversations/conv_000459.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 30.403252517479242,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
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-      "duration": 1.24,
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-      "event_class": "laugh",
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-      "duration": 0.5082365743080339,
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-      "speaker_id": "3170"
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-      "speaker_id": "6295"
-    }
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-}
\ No newline at end of file
diff --git a/conversations/conv_000460.json b/conversations/conv_000460.json
deleted file mode 100644
index b2b7d661efb78d48b0f83349b6346521d3246972..0000000000000000000000000000000000000000
--- a/conversations/conv_000460.json
+++ /dev/null
@@ -1,159 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "start_time": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.921476490894578,
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-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0002",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
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-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
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-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-64301.flac |",
-      "real_speaker_id": "6295",
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-      "segment_id": "seg0005",
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-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 28.849769284587246,
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-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
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-  "background_events": [
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-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/271460.wav",
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-      "speaker_id": "6295"
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\ No newline at end of file
diff --git a/conversations/conv_000461.json b/conversations/conv_000461.json
deleted file mode 100644
index c8cd8d3c0a28f5ed86d5f3f4753a9e93d6742f1c..0000000000000000000000000000000000000000
--- a/conversations/conv_000461.json
+++ /dev/null
@@ -1,102 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 29.805855957555117,
-  "num_speakers": 3,
-  "overlap_rate": 0.2,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/371913_1.wav",
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-  "paralinguistic_events": [
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-      "start_time": 22.250880193420848,
-      "speaker_id": "652"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000462.json b/conversations/conv_000462.json
deleted file mode 100644
index 72274196862bdc69bef558c60a5a6f71e9911091..0000000000000000000000000000000000000000
--- a/conversations/conv_000462.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
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-      "utterance_id": "7850-111771",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-111771.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-286674.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
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-    },
-    {
-      "segment_id": "seg0004",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 153858
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-  "foreground_events": [
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-  "paralinguistic_events": [
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-      "duration": 1.18,
-      "start_time": 30.82,
-      "speaker_id": "3000"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000463.json b/conversations/conv_000463.json
deleted file mode 100644
index 011e89b10ac3255a4e0deb6fd9d5fd8e99e57719..0000000000000000000000000000000000000000
--- a/conversations/conv_000463.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "utterance_id": "6241-61946",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "utterance_id": "5338-24615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24615.flac |",
-      "real_speaker_id": "5338",
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-    {
-      "segment_id": "seg0002",
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-    }
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-}
\ No newline at end of file
diff --git a/conversations/conv_000464.json b/conversations/conv_000464.json
deleted file mode 100644
index 9597b5b709f74f5acff3ce11c31d4771ab1f9c43..0000000000000000000000000000000000000000
--- a/conversations/conv_000464.json
+++ /dev/null
@@ -1,165 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
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-}
\ No newline at end of file
diff --git a/conversations/conv_000465.json b/conversations/conv_000465.json
deleted file mode 100644
index ab7ab7d6df0bf77918f7d63baaa23793eb167101..0000000000000000000000000000000000000000
--- a/conversations/conv_000465.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
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-  "num_speakers": 3,
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-}
\ No newline at end of file
diff --git a/conversations/conv_000466.json b/conversations/conv_000466.json
deleted file mode 100644
index 9baf05677e966787def79db6e8cb847268a4b171..0000000000000000000000000000000000000000
--- a/conversations/conv_000466.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/220019.wav",
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-      "start_time": 31.437301150539234,
-      "speaker_id": "1462"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000467.json b/conversations/conv_000467.json
deleted file mode 100644
index f2ded04a28563e9aac9f61b74c5bfed054300590..0000000000000000000000000000000000000000
--- a/conversations/conv_000467.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
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-      "start_time": 6.06221467906667,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
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-      "overlap": false,
-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
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-      "segment_id": "seg0003",
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-      "utterance_id": "5694-64029",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64029.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 21.838423375664547,
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-      "duration": 6.171961021814872,
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-      "overlap": true,
-      "utterance_id": "6345-93302",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93302.flac |",
-      "real_speaker_id": "6345",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 28.659293567988694,
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-      "duration": 3.340706432011306,
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-      "overlap": false,
-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 86782
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/271460.wav",
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-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/232915.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/laugh/0010.wav",
-      "duration": 1.36,
-      "start_time": 16.918442903929837,
-      "speaker_id": "2086"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6345/laugh/0029.wav",
-      "duration": 1.02,
-      "start_time": 24.6573526106386,
-      "speaker_id": "6345"
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-    {
-      "event_class": "cough",
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-      "duration": 0.44935895385732477,
-      "start_time": 28.02918862640023,
-      "speaker_id": "6345"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000468.json b/conversations/conv_000468.json
deleted file mode 100644
index 8644dabb56ee74c777740f5484b2cf4835586c5c..0000000000000000000000000000000000000000
--- a/conversations/conv_000468.json
+++ /dev/null
@@ -1,165 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "utterance_id": "251-118436",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-118436.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.255724050461071,
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-      "utterance_id": "7850-73752",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-73752.flac |",
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-      "position_frames": 0
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-      "overlap": false,
-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
-      "start_time": 15.328497864383056,
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-      "overlap": false,
-      "utterance_id": "2803-154328",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 21.223417098870023,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 26.96587297488602,
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-      "utterance_id": "2803-154328",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 89298
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-      "segment_id": "seg0006",
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-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 96684
-    }
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-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Vacuum_cleaner/352273.wav",
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-      "start_time": 8.667426656032438
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-  "paralinguistic_events": [
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-      "event_class": "cough",
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-      "duration": 1.2848940940715214,
-      "start_time": 14.020761685872712,
-      "speaker_id": "2803"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000469.json b/conversations/conv_000469.json
deleted file mode 100644
index 1efcda1dd9104814b2582d48635df8eda9818de8..0000000000000000000000000000000000000000
--- a/conversations/conv_000469.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
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-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
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-      "utterance_id": "1993-147964",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
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-      "speaker_id": 1,
-      "start_time": 21.468404648394873,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43363.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "overlap": false,
-      "utterance_id": "1993-147149",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147149.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 30.09025523362874,
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-      "duration": 1.9097447663712614,
-      "start_frame": 481444,
-      "duration_frames": 30555,
-      "overlap": false,
-      "utterance_id": "1993-147966",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147966.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
-    }
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-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/331161.wav",
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-  "foreground_events": [
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-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/329896_16.wav",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
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-      "speaker_id": "1993"
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-    {
-      "event_class": "laugh",
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-      "duration": 1.2405561573581603,
-      "start_time": 30.45870176057776,
-      "speaker_id": "1993"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000470.json b/conversations/conv_000470.json
deleted file mode 100644
index 541906da84d161ef2c1e9306f0ee95191fdef043..0000000000000000000000000000000000000000
--- a/conversations/conv_000470.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "1272-135031",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-135031.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "start_time": 6.786860917482152,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
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-      "segment_id": "seg0006",
-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
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-  "background_events": [],
-  "foreground_events": [
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/406230.wav",
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\ No newline at end of file
diff --git a/conversations/conv_000471.json b/conversations/conv_000471.json
deleted file mode 100644
index d5d08e3958ee936474e434cd6e2cf8106cd06c8d..0000000000000000000000000000000000000000
--- a/conversations/conv_000471.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
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-      "position_frames": 0
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-      "real_speaker_id": "1272",
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-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 152021
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-  "background_events": [
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-      "speaker_id": "1272"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000472.json b/conversations/conv_000472.json
deleted file mode 100644
index 06ac7d11baee5d09ecb5da9e339b3ffeed531bfd..0000000000000000000000000000000000000000
--- a/conversations/conv_000472.json
+++ /dev/null
@@ -1,166 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
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-  ],
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-}
\ No newline at end of file
diff --git a/conversations/conv_000473.json b/conversations/conv_000473.json
deleted file mode 100644
index da6a7d033fec98d7b8e3eabff933f985c2e981b5..0000000000000000000000000000000000000000
--- a/conversations/conv_000473.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/266610_1.wav",
-      "duration": 0.672108843537415,
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8297/laugh/0017.wav",
-      "duration": 0.6814099787258481,
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-      "speaker_id": "8297"
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-      "event_class": "cough",
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-      "duration": 1.08,
-      "start_time": 6.696846091742231,
-      "speaker_id": "2902"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8297/cough/0065.wav",
-      "duration": 0.84,
-      "start_time": 17.87780430638329,
-      "speaker_id": "8297"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2902/laugh/0023.wav",
-      "duration": 1.16,
-      "start_time": 21.502840146498507,
-      "speaker_id": "2902"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2902/cough/0014.wav",
-      "duration": 0.3991569508165664,
-      "start_time": 31.600843049183435,
-      "speaker_id": "2902"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000474.json b/conversations/conv_000474.json
deleted file mode 100644
index e01f473c948cc7fa15c2682e22ec60fa563added..0000000000000000000000000000000000000000
--- a/conversations/conv_000474.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.553382565535824,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "start_time": 0.0,
-      "end_time": 4.712062636211138,
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-      "duration_frames": 75393,
-      "overlap": false,
-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.550554766376801,
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-      "duration": 5.180171850041271,
-      "start_frame": 88808,
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-      "overlap": false,
-      "utterance_id": "652-129742",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/652-129742.flac |",
-      "real_speaker_id": "652",
-      "position_frames": 0
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-      "speaker_id": 0,
-      "start_time": 11.103448335935571,
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-      "utterance_id": "7850-286674",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-286674.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 15.100320882824516,
-      "end_time": 20.740750859144086,
-      "duration": 5.640429976319572,
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-      "overlap": false,
-      "utterance_id": "2412-153954",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153954.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 21.45134169369979,
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-      "overlap": false,
-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 26.87007378812791,
-      "end_time": 31.553382565535824,
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-      "overlap": false,
-      "utterance_id": "2412-153948",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153948.flac |",
-      "real_speaker_id": "2412",
-      "position_frames": 75393
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/588_1.wav",
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-  "foreground_events": [
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-      "event_class": "Blender",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
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-      "event_class": "cough",
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-      "duration": 1.5,
-      "start_time": 19.01993264839157,
-      "speaker_id": "2412"
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-    {
-      "event_class": "cough",
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-      "duration": 0.6958490996804141,
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-      "speaker_id": "2412"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000475.json b/conversations/conv_000475.json
deleted file mode 100644
index a444d08141b9d235e050a6dc7ed802eff1abded3..0000000000000000000000000000000000000000
--- a/conversations/conv_000475.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.223826662937035,
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-      "utterance_id": "5694-64025",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
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-      "overlap": false,
-      "utterance_id": "5694-64038",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 15.180988401728882,
-      "end_time": 21.931422323089617,
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-      "overlap": false,
-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 74666
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 22.645241443525304,
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 182672
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 28.308991261874304,
-      "end_time": 32.0,
-      "duration": 3.6910087381256957,
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-      "duration_frames": 59056,
-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/589_1.wav",
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-  "foreground_events": [
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-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/406067_1.wav",
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-  ],
-  "paralinguistic_events": []
-}
\ No newline at end of file
diff --git a/conversations/conv_000476.json b/conversations/conv_000476.json
deleted file mode 100644
index 6efeb82d2ab32ccf66149ba5a26e91cc74135cab..0000000000000000000000000000000000000000
--- a/conversations/conv_000476.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "utterance_id": "2428-83699",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "utterance_id": "2428-83705",
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-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
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-      "utterance_id": "8297-275154",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275154.flac |",
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-    },
-    {
-      "segment_id": "seg0005",
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-      "overlap": false,
-      "utterance_id": "2428-83699",
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-  "foreground_events": [
-    {
-      "event_class": "Cat",
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-  "paralinguistic_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000477.json b/conversations/conv_000477.json
deleted file mode 100644
index 0378a034d9e972390f1b828bd8e3ce36278a6347..0000000000000000000000000000000000000000
--- a/conversations/conv_000477.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "6241-66616",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
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-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154320.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 90194
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-      "speaker_id": "6241"
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-      "duration": 0.6184260550694114,
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-      "event_class": "cough",
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-      "speaker_id": "8297"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000478.json b/conversations/conv_000478.json
deleted file mode 100644
index e1d53cef82180712efb7f5983960a68986961b18..0000000000000000000000000000000000000000
--- a/conversations/conv_000478.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.255754742076263,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.991732406250298,
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-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
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-      "segment_id": "seg0002",
-      "speaker_id": 1,
-      "start_time": 11.9515730915341,
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-      "overlap": false,
-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 85569
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 2,
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-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
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-      "segment_id": "seg0004",
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-      "start_time": 24.74493902062768,
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-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 27.773607295125053,
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-      "duration_frames": 55714,
-      "overlap": true,
-      "utterance_id": "2428-83699",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/41634.wav",
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-  "paralinguistic_events": [
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-      "duration": 1.0,
-      "start_time": 5.488112666690253,
-      "speaker_id": "777"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000479.json b/conversations/conv_000479.json
deleted file mode 100644
index 78dd5e261cba20d8c4007e820e9e2e1be1738484..0000000000000000000000000000000000000000
--- a/conversations/conv_000479.json
+++ /dev/null
@@ -1,165 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.489858063352784,
-  "num_speakers": 2,
-  "overlap_rate": 0.14285714285714285,
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-      "utterance_id": "6319-57405",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
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-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
-      "real_speaker_id": "6319",
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-      "segment_id": "seg0005",
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 135326
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-    {
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-      "duration": 1.14,
-      "start_time": 30.86,
-      "speaker_id": "6319"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000480.json b/conversations/conv_000480.json
deleted file mode 100644
index 2003c8358c6e62f1b2d07839e5832d8c26fb7d38..0000000000000000000000000000000000000000
--- a/conversations/conv_000480.json
+++ /dev/null
@@ -1,103 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
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-      "position_frames": 0
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-    {
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-    {
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-      "real_speaker_id": "652",
-      "position_frames": 0
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-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 26.850484749653187,
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-      "real_speaker_id": "6319",
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-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
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-  "paralinguistic_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000481.json b/conversations/conv_000481.json
deleted file mode 100644
index 7cebdd429965bd5d0c50f47a7d82a36e474539bc..0000000000000000000000000000000000000000
--- a/conversations/conv_000481.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
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-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-66616.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000482.json b/conversations/conv_000482.json
deleted file mode 100644
index 76aea345f2ad63113fee44cdc020079a3558256f..0000000000000000000000000000000000000000
--- a/conversations/conv_000482.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
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-  "total_duration": 32.0,
-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000483.json b/conversations/conv_000483.json
deleted file mode 100644
index e542456874d215f23fee69710a09b2f11637d421..0000000000000000000000000000000000000000
--- a/conversations/conv_000483.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000484.json b/conversations/conv_000484.json
deleted file mode 100644
index ebec7e2b43f357f76131cd8dc227b882595cad3d..0000000000000000000000000000000000000000
--- a/conversations/conv_000484.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000485.json b/conversations/conv_000485.json
deleted file mode 100644
index 4356ae52fa301fbe034104423737efb3336b92e0..0000000000000000000000000000000000000000
--- a/conversations/conv_000485.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000486.json b/conversations/conv_000486.json
deleted file mode 100644
index 6d30974a02661eb38fbeda055f55709031419ccc..0000000000000000000000000000000000000000
--- a/conversations/conv_000486.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000487.json b/conversations/conv_000487.json
deleted file mode 100644
index ada5cabe4fbbf002327ca7bd66bc061b281b8872..0000000000000000000000000000000000000000
--- a/conversations/conv_000487.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-      "speaker_id": "1462"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000488.json b/conversations/conv_000488.json
deleted file mode 100644
index f2835dd81fd0b2d4e5b3efda1e8fbfa98a09f4ba..0000000000000000000000000000000000000000
--- a/conversations/conv_000488.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
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-}
\ No newline at end of file
diff --git a/conversations/conv_000489.json b/conversations/conv_000489.json
deleted file mode 100644
index b5cb1970acbcd1f7ec0c63348014cfa2f6d0005e..0000000000000000000000000000000000000000
--- a/conversations/conv_000489.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
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-      "segment_id": "seg0005",
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\ No newline at end of file
diff --git a/conversations/conv_000490.json b/conversations/conv_000490.json
deleted file mode 100644
index c99001ae9929929300347a2a6c4d41f1b5b52d79..0000000000000000000000000000000000000000
--- a/conversations/conv_000490.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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\ No newline at end of file
diff --git a/conversations/conv_000491.json b/conversations/conv_000491.json
deleted file mode 100644
index 6e1a6f6195360026ee8d6c8ed0a6ebf7aec2f466..0000000000000000000000000000000000000000
--- a/conversations/conv_000491.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
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-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000492.json b/conversations/conv_000492.json
deleted file mode 100644
index cd31650d684c9f1863497337eabafdf835d8b841..0000000000000000000000000000000000000000
--- a/conversations/conv_000492.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6295/laugh/0041.wav",
-      "duration": 1.52,
-      "start_time": 30.258725263848053,
-      "speaker_id": "6295"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000493.json b/conversations/conv_000493.json
deleted file mode 100644
index 3320e601b16db61266a150fb5d49e642952990fa..0000000000000000000000000000000000000000
--- a/conversations/conv_000493.json
+++ /dev/null
@@ -1,165 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 3.653205562994137,
-      "duration": 3.653205562994137,
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-      "overlap": false,
-      "utterance_id": "1673-143396",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 4.530092188003334,
-      "end_time": 8.918515873227328,
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-      "duration_frames": 70214,
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 9.762070322074326,
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-      "start_frame": 156193,
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-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 70214
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
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-    },
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-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 233798
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 26.72581640331067,
-      "end_time": 29.795971786895166,
-      "duration": 3.0701553835844946,
-      "start_frame": 427613,
-      "duration_frames": 49122,
-      "overlap": false,
-      "utterance_id": "3536-8226",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 30.479302135519326,
-      "end_time": 32.0,
-      "duration": 1.520697864480674,
-      "start_frame": 487668,
-      "duration_frames": 24331,
-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 298694
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/589_1.wav",
-      "duration": 10.690294784580498,
-      "start_time": 14.354225238067409
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/54058.wav",
-      "duration": 0.6683219954648526,
-      "start_time": 12.644199940796458
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-    {
-      "event_class": "Electric_shaver_toothbrush",
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-  "paralinguistic_events": [
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-      "event_class": "cough",
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-      "speaker_id": "1919"
-    },
-    {
-      "event_class": "laugh",
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-      "speaker_id": "1919"
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-      "event_class": "cough",
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-      "duration": 0.982069640621692,
-      "start_time": 14.444028607045874,
-      "speaker_id": "1919"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1919/laugh/0048.wav",
-      "duration": 0.7942559703571668,
-      "start_time": 20.68423173834869,
-      "speaker_id": "1919"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1919/laugh/0061.wav",
-      "duration": 1.22,
-      "start_time": 30.505452435213815,
-      "speaker_id": "1919"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000494.json b/conversations/conv_000494.json
deleted file mode 100644
index c2e2a4094037daf1dfc301a84438e6ec9fdee0a9..0000000000000000000000000000000000000000
--- a/conversations/conv_000494.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.367744687677423,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
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-      "start_time": 0.0,
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-      "utterance_id": "6319-57405",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
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-      "start_time": 5.28202951172135,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
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-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
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-      "start_time": 13.747250127678782,
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-      "utterance_id": "2803-154328",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
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-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 52104
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "overlap": false,
-      "utterance_id": "6319-64726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 28.071202949503935,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/379144_0.wav",
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-  "paralinguistic_events": [
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-      "speaker_id": "3536"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000495.json b/conversations/conv_000495.json
deleted file mode 100644
index 54f58722ff3fb178500efd09679d20d17ba73bda..0000000000000000000000000000000000000000
--- a/conversations/conv_000495.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.554958351711363,
-  "num_speakers": 3,
-  "overlap_rate": 0.5,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
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-      "speaker_id": 2,
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-      "utterance_id": "2277-149896",
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-      "real_speaker_id": "2277",
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-      "real_speaker_id": "6319",
-      "position_frames": 0
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-  "background_events": [
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-      "event_class": "Blender",
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\ No newline at end of file
diff --git a/conversations/conv_000496.json b/conversations/conv_000496.json
deleted file mode 100644
index c3d647e602c8f8a050454fd9c9eb2bd9e389010f..0000000000000000000000000000000000000000
--- a/conversations/conv_000496.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
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-      "speaker_id": "422"
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\ No newline at end of file
diff --git a/conversations/conv_000497.json b/conversations/conv_000497.json
deleted file mode 100644
index a1c215fb2a57de227781ad26d5fdb60c2632827b..0000000000000000000000000000000000000000
--- a/conversations/conv_000497.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.762748961674173,
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-  "overlap_rate": 0.3333333333333333,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "utterance_id": "2803-154320",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154320.flac |",
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-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/2503.wav",
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\ No newline at end of file
diff --git a/conversations/conv_000498.json b/conversations/conv_000498.json
deleted file mode 100644
index eea12bcb7ab2f79b6aedcae9247b1017dfacbb70..0000000000000000000000000000000000000000
--- a/conversations/conv_000498.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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-      "real_speaker_id": "3536",
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\ No newline at end of file
diff --git a/conversations/conv_000499.json b/conversations/conv_000499.json
deleted file mode 100644
index c58ec0e9887ca82f55c6c3d20eaa2c37ae13ffd8..0000000000000000000000000000000000000000
--- a/conversations/conv_000499.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
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\ No newline at end of file
diff --git a/conversations/conv_000500.json b/conversations/conv_000500.json
deleted file mode 100644
index ef388b3135b70444e5b4a06b0c8890fc8aeec647..0000000000000000000000000000000000000000
--- a/conversations/conv_000500.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "duration_frames": 79656,
-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 156047
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 26.297822832881433,
-      "end_time": 32.0,
-      "duration": 5.702177167118567,
-      "start_frame": 420765,
-      "duration_frames": 91234,
-      "overlap": false,
-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
-      "real_speaker_id": "777",
-      "position_frames": 74943
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/588_1.wav",
-      "duration": 12.274421768707484,
-      "start_time": 3.8448972341241126
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/116434_1.wav",
-      "duration": 2.210040923683807,
-      "start_time": 16.766870952582977
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-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/54057.wav",
-      "duration": 1.1817687074829932,
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1919/cough/0005.wav",
-      "duration": 1.0,
-      "start_time": 20.362781730992218,
-      "speaker_id": "1919"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/777/cough/0008.wav",
-      "duration": 0.96,
-      "start_time": 29.403978340568607,
-      "speaker_id": "777"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000501.json b/conversations/conv_000501.json
deleted file mode 100644
index 96587193cd6fcf78a7e4b4b33b12b08cda83bf00..0000000000000000000000000000000000000000
--- a/conversations/conv_000501.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 4.37141087174466,
-      "duration": 4.37141087174466,
-      "start_frame": 0,
-      "duration_frames": 69942,
-      "overlap": false,
-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 4.960646401107937,
-      "end_time": 9.755654165547472,
-      "duration": 4.795007764439537,
-      "start_frame": 79370,
-      "duration_frames": 76720,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 10.872055789186565,
-      "end_time": 15.372037506810484,
-      "duration": 4.499981717623919,
-      "start_frame": 173952,
-      "duration_frames": 71999,
-      "overlap": false,
-      "utterance_id": "84-121550",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121550.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 15.994011787751035,
-      "end_time": 22.54657187106779,
-      "duration": 6.552560083316754,
-      "start_frame": 255904,
-      "duration_frames": 104840,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 76720
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 23.1582836727126,
-      "end_time": 30.045534790320136,
-      "duration": 6.887251117607537,
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-      "duration_frames": 110196,
-      "overlap": false,
-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 30.726211925160566,
-      "end_time": 32.0,
-      "duration": 1.273788074839434,
-      "start_frame": 491619,
-      "duration_frames": 20380,
-      "overlap": false,
-      "utterance_id": "84-121123",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/84-121123.flac |",
-      "real_speaker_id": "84",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/132472.wav",
-      "duration": 14.809558906642405,
-      "start_time": 7.901532302944279
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/377500.wav",
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-      "start_time": 26.345973381154916
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-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/347682.wav",
-      "duration": 4.628896370621584,
-      "start_time": 11.716363022009137
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6313/cough/0049.wav",
-      "duration": 0.4255352019285952,
-      "start_time": 4.512271405591637,
-      "speaker_id": "6313"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/laugh/0012.wav",
-      "duration": 0.5514708170545211,
-      "start_time": 4.220642423013533,
-      "speaker_id": "422"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/cough/0004.wav",
-      "duration": 0.3357808573211413,
-      "start_time": 9.796454369154649,
-      "speaker_id": "422"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/laugh/0033.wav",
-      "duration": 0.627836607406194,
-      "start_time": 22.824572023070978,
-      "speaker_id": "422"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000502.json b/conversations/conv_000502.json
deleted file mode 100644
index cd505fa6c3b12c38a785e54d6f6c85bbc09c99d4..0000000000000000000000000000000000000000
--- a/conversations/conv_000502.json
+++ /dev/null
@@ -1,159 +0,0 @@
-{
-  "num_segments": 8,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.375,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 4.620967696904753,
-      "duration": 4.620967696904753,
-      "start_frame": 0,
-      "duration_frames": 73935,
-      "overlap": false,
-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 4.0673516693645455,
-      "end_time": 7.553943079513342,
-      "duration": 3.486591410148796,
-      "start_frame": 65077,
-      "duration_frames": 55785,
-      "overlap": true,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 0,
-      "start_time": 8.318118373124838,
-      "end_time": 12.168629480345583,
-      "duration": 3.8505111072207447,
-      "start_frame": 133089,
-      "duration_frames": 61608,
-      "overlap": true,
-      "utterance_id": "6319-57405",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 13.130165042631717,
-      "end_time": 18.04655779980135,
-      "duration": 4.916392757169634,
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-      "duration_frames": 78662,
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-      "utterance_id": "422-122949",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 73935
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 17.347459300135394,
-      "end_time": 22.156260182473318,
-      "duration": 4.808800882337925,
-      "start_frame": 277559,
-      "duration_frames": 76940,
-      "overlap": true,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 55785
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 24.16010518793717,
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-      "duration": 3.6187586709230106,
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-      "duration_frames": 57900,
-      "overlap": false,
-      "utterance_id": "6319-57405",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-57405.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 61608
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 28.218206355416754,
-      "end_time": 31.420213687400107,
-      "duration": 3.2020073319833537,
-      "start_frame": 451491,
-      "duration_frames": 51232,
-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 132725
-    },
-    {
-      "segment_id": "seg0007",
-      "speaker_id": 2,
-      "start_time": 31.656797334928008,
-      "end_time": 32.0,
-      "duration": 0.34320266507199193,
-      "start_frame": 506508,
-      "duration_frames": 5491,
-      "overlap": false,
-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 183957
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/427113_0.wav",
-      "duration": 0.14183673469387756,
-      "start_time": 8.287404340413083
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/cough/0025.wav",
-      "duration": 1.12,
-      "start_time": 7.732347582547881,
-      "speaker_id": "2078"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/laugh/0026.wav",
-      "duration": 0.7310578547558355,
-      "start_time": 12.245305459638903,
-      "speaker_id": "422"
-    },
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/cough/0001.wav",
-      "duration": 0.6435648378270935,
-      "start_time": 18.121710423089365,
-      "speaker_id": "422"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2078/laugh/0036.wav",
-      "duration": 1.06,
-      "start_time": 30.94,
-      "speaker_id": "2078"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000503.json b/conversations/conv_000503.json
deleted file mode 100644
index 13d8d3a3ca808bd2051972226d6d10a33bb37b4e..0000000000000000000000000000000000000000
--- a/conversations/conv_000503.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "start_time": 0.0,
-      "end_time": 5.230767982516976,
-      "duration": 5.230767982516976,
-      "start_frame": 0,
-      "duration_frames": 83692,
-      "overlap": false,
-      "utterance_id": "6241-61943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 5.554748125751218,
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-      "duration": 4.5118111956459686,
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-      "duration_frames": 72188,
-      "overlap": true,
-      "utterance_id": "8842-302196",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302196.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0002",
-      "speaker_id": 2,
-      "start_time": 11.091109646557978,
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-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.510386587023774,
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-      "utterance_id": "6241-61943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61943.flac |",
-      "real_speaker_id": "6241",
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-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 21.294998552418768,
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-      "utterance_id": "8842-304647",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-304647.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.594440514990918,
-      "end_time": 31.33334570716663,
-      "duration": 3.738905192175709,
-      "start_frame": 441511,
-      "duration_frames": 59822,
-      "overlap": false,
-      "utterance_id": "6241-61946",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 31.53160843086124,
-      "end_time": 32.0,
-      "duration": 0.4683915691387597,
-      "start_frame": 504505,
-      "duration_frames": 7494,
-      "overlap": false,
-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 65735
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/378702.wav",
-      "duration": 21.245044467193846,
-      "start_time": 1.8030063391075084
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-  ],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/427113_0.wav",
-      "duration": 0.14183673469387756,
-      "start_time": 21.5376024768427
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/laugh/0013.wav",
-      "duration": 1.06,
-      "start_time": 4.443511958086356,
-      "speaker_id": "8842"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/8842/laugh/0001.wav",
-      "duration": 1.34,
-      "start_time": 27.495180872145784,
-      "speaker_id": "8842"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3853/laugh/0044.wav",
-      "duration": 0.5521514046968672,
-      "start_time": 30.79171863001052,
-      "speaker_id": "3853"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000504.json b/conversations/conv_000504.json
deleted file mode 100644
index ea031af6205a219e2e2ecd61ab14edaa8278d18a..0000000000000000000000000000000000000000
--- a/conversations/conv_000504.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000505.json b/conversations/conv_000505.json
deleted file mode 100644
index a5be4249eef7b1bc367aa8aa959c4065130f0359..0000000000000000000000000000000000000000
--- a/conversations/conv_000505.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000506.json b/conversations/conv_000506.json
deleted file mode 100644
index 87b4dcf7acf21c29e6c2a98c21f9ebef9931aa7a..0000000000000000000000000000000000000000
--- a/conversations/conv_000506.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000507.json b/conversations/conv_000507.json
deleted file mode 100644
index 0445479537edd9ef918ddb0ab934b6fb7d5ac3aa..0000000000000000000000000000000000000000
--- a/conversations/conv_000507.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
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-      "start_time": 24.114720199791567,
-      "speaker_id": "2086"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/cough/0003.wav",
-      "duration": 0.7821172082735421,
-      "start_time": 21.673881260086652,
-      "speaker_id": "2086"
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-    {
-      "event_class": "laugh",
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-      "duration": 1.12,
-      "start_time": 30.88,
-      "speaker_id": "3853"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000508.json b/conversations/conv_000508.json
deleted file mode 100644
index ace0588bd528c0a6084e14a23e2a298518ee8ef8..0000000000000000000000000000000000000000
--- a/conversations/conv_000508.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "3752-4943",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4943.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.301639984997619,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
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-      "speaker_id": 0,
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-      "utterance_id": "5895-34615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 19.970889220040466,
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-      "utterance_id": "5895-34629",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 1,
-      "start_time": 26.288790305512084,
-      "end_time": 32.0,
-      "duration": 5.711209694487916,
-      "start_frame": 420620,
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-      "overlap": false,
-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 81059
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/353124.wav",
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-  "foreground_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/156110.wav",
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-      "event_class": "Alarm_bell_ringing",
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-  "paralinguistic_events": [
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/laugh/0069.wav",
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-      "speaker_id": "5895"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000509.json b/conversations/conv_000509.json
deleted file mode 100644
index f742564b3c34a479f8d93b9b6f614ddd3bc680a1..0000000000000000000000000000000000000000
--- a/conversations/conv_000509.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 23.438779924984097,
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-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 94134
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "utterance_id": "6319-64726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 79381
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Blender",
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-      "event_class": "Cat",
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-      "duration": 0.96,
-      "start_time": 16.08415059080121,
-      "speaker_id": "6319"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000510.json b/conversations/conv_000510.json
deleted file mode 100644
index d2ab17b9a8a1695d2dd9bd50c6c2daa875caf50c..0000000000000000000000000000000000000000
--- a/conversations/conv_000510.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "6345-64257",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-64257.flac |",
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-      "segment_id": "seg0004",
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\ No newline at end of file
diff --git a/conversations/conv_000511.json b/conversations/conv_000511.json
deleted file mode 100644
index 1ae721732fdb18b61f6b63148db7b08dc28daa59..0000000000000000000000000000000000000000
--- a/conversations/conv_000511.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3081/laugh/0032.wav",
-      "duration": 1.1596072578976258,
-      "start_time": 15.252810879877975,
-      "speaker_id": "3081"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/84/laugh/0059.wav",
-      "duration": 0.7179427051712819,
-      "start_time": 30.209988854651634,
-      "speaker_id": "84"
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-    {
-      "event_class": "cough",
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-      "duration": 0.9039680814799069,
-      "start_time": 31.096031918520094,
-      "speaker_id": "84"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000512.json b/conversations/conv_000512.json
deleted file mode 100644
index de6cd774ea8d4c763f063b74653fd66eb8fef119..0000000000000000000000000000000000000000
--- a/conversations/conv_000512.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "start_time": 0.0,
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-      "utterance_id": "5895-34629",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 4.499649004249429,
-      "end_time": 8.985340919746193,
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-      "start_frame": 71994,
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-      "overlap": false,
-      "utterance_id": "1462-170138",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170138.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
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-      "speaker_id": 0,
-      "start_time": 9.762942661913588,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34629.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 66395
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-      "utterance_id": "1462-170138",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170138.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 71771
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 20.513011845948405,
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-      "utterance_id": "5895-34622",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34622.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 25.011944044576467,
-      "end_time": 31.023747120836667,
-      "duration": 6.0118030762601995,
-      "start_frame": 400191,
-      "duration_frames": 96188,
-      "overlap": false,
-      "utterance_id": "7850-286674",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-286674.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 31.501396905155435,
-      "end_time": 32.0,
-      "duration": 0.4986030948445652,
-      "start_frame": 504022,
-      "duration_frames": 7977,
-      "overlap": false,
-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Cat",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Cat/64005.wav",
-      "duration": 0.48210884353741496,
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-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/158737_0.wav",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1462/laugh/0019.wav",
-      "duration": 1.14,
-      "start_time": 5.283862078816517,
-      "speaker_id": "1462"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5895/laugh/0058.wav",
-      "duration": 1.3081321170973939,
-      "start_time": 9.834745352032199,
-      "speaker_id": "5895"
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-    {
-      "event_class": "cough",
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-      "duration": 0.9746932598592257,
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-      "speaker_id": "5895"
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-      "event_class": "cough",
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-      "start_time": 30.981160576614595,
-      "speaker_id": "7850"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000513.json b/conversations/conv_000513.json
deleted file mode 100644
index 5c10d9331d8f36db33caf12461381b8317a7b959..0000000000000000000000000000000000000000
--- a/conversations/conv_000513.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "speaker_id": 0,
-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 6.015392628056929,
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-      "utterance_id": "5694-64025",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64025.flac |",
-      "real_speaker_id": "5694",
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-      "utterance_id": "6319-64726",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-64726.flac |",
-      "real_speaker_id": "6319",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
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-      "speaker_id": 0,
-      "start_time": 21.694465567010333,
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-      "utterance_id": "2428-83699",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
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-      "overlap": false,
-      "utterance_id": "5694-64038",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 71170
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
-      "start_time": 30.650099445941585,
-      "end_time": 32.0,
-      "duration": 1.349900554058415,
-      "start_frame": 490401,
-      "duration_frames": 21598,
-      "overlap": false,
-      "utterance_id": "6319-275224",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
-      "real_speaker_id": "6319",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/20081_1.wav",
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-      "event_class": "Blender",
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-  "paralinguistic_events": [
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000514.json b/conversations/conv_000514.json
deleted file mode 100644
index 9596c2be765d41888f63f9508f465a9c54416c94..0000000000000000000000000000000000000000
--- a/conversations/conv_000514.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
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-      "utterance_id": "3170-137482",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-    },
-    {
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-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
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-    {
-      "segment_id": "seg0005",
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-      "utterance_id": "3536-8226",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-8226.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Dog",
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-  "paralinguistic_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000515.json b/conversations/conv_000515.json
deleted file mode 100644
index ca3b99d137315f393b8beda5497a44b23b241349..0000000000000000000000000000000000000000
--- a/conversations/conv_000515.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.71723034406264,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
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-      "utterance_id": "2428-83699",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
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-      "segment_id": "seg0004",
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-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
-      "position_frames": 193486
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-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 25.919818288535303,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6319-275224.flac |",
-      "real_speaker_id": "6319",
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-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/49538_1.wav",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
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-      "speaker_id": "3081"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000516.json b/conversations/conv_000516.json
deleted file mode 100644
index ef4a4622f921262729037eaff0e865d7fc0e8742..0000000000000000000000000000000000000000
--- a/conversations/conv_000516.json
+++ /dev/null
@@ -1,109 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
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-      "start_time": 0.0,
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-      "utterance_id": "2035-147961",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 7.844920719804485,
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-      "duration": 6.610790635320554,
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-      "overlap": false,
-      "utterance_id": "2035-147961",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 110903
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-      "segment_id": "seg0002",
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-      "start_time": 15.040689233135515,
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-      "overlap": false,
-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 21.663894813565012,
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-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 28.259186970498,
-      "end_time": 32.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 102077
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Blender/366510.wav",
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-  "foreground_events": [
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-    {
-      "event_class": "Cat",
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-  "paralinguistic_events": [
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-      "speaker_id": "3000"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000517.json b/conversations/conv_000517.json
deleted file mode 100644
index 8c0f52ca993d1701941bce24935b287eb8389399..0000000000000000000000000000000000000000
--- a/conversations/conv_000517.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24615.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149897.flac |",
-      "real_speaker_id": "2277",
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 18.9382999766529,
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-      "utterance_id": "2277-149874",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 67324
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 23.853919469021783,
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-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
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-      "utterance_id": "2277-149896",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149896.flac |",
-      "real_speaker_id": "2277",
-      "position_frames": 0
-    }
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-  "background_events": [],
-  "foreground_events": [
-    {
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-      "duration": 1.24,
-      "start_time": 0,
-      "speaker_id": "5338"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000518.json b/conversations/conv_000518.json
deleted file mode 100644
index 73d555699d7c0ac2e087142e3d7e7b528b9aa121..0000000000000000000000000000000000000000
--- a/conversations/conv_000518.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
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-      "position_frames": 0
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-      "utterance_id": "777-126732",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
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-      "segment_id": "seg0003",
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
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-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
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-      "real_speaker_id": "777",
-      "position_frames": 154665
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/777-126732.flac |",
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-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
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-  "foreground_events": [
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-}
\ No newline at end of file
diff --git a/conversations/conv_000519.json b/conversations/conv_000519.json
deleted file mode 100644
index 011eaa6a1a5b44e42ba88ca653d402874e3e134c..0000000000000000000000000000000000000000
--- a/conversations/conv_000519.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
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-      "segment_id": "seg0006",
-      "speaker_id": 0,
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-      "utterance_id": "2412-153947",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
-      "real_speaker_id": "2412",
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-      "event_class": "laugh",
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-      "speaker_id": "6313"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000520.json b/conversations/conv_000520.json
deleted file mode 100644
index b2a529a9fa50970dd35aac69b804660c86cb7c7e..0000000000000000000000000000000000000000
--- a/conversations/conv_000520.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.2,
-  "segments": [
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-      "utterance_id": "2902-9008",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9008.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    },
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-      "start_time": 7.78903953660004,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
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-      "start_time": 14.640109150126003,
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-      "utterance_id": "2078-142845",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2078-142845.flac |",
-      "real_speaker_id": "2078",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 18.983737000920133,
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 93297
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 25.595165853225843,
-      "end_time": 32.0,
-      "duration": 6.4048341467741565,
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-      "duration_frames": 102477,
-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/71218_1.wav",
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-  "foreground_events": [
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-      "event_class": "Dog",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
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-      "event_class": "laugh",
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-      "duration": 1.16,
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-      "speaker_id": "2902"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000521.json b/conversations/conv_000521.json
deleted file mode 100644
index 315f9084dd1ea84c1ed68bc417da226aa1a9e0be..0000000000000000000000000000000000000000
--- a/conversations/conv_000521.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147961.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 0
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-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 23.17955674692191,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2412-153947.flac |",
-      "real_speaker_id": "2412",
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-      "utterance_id": "2035-147960",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-147960.flac |",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000522.json b/conversations/conv_000522.json
deleted file mode 100644
index 7bfca3b5c89af806bdc93f79cd7aea051fcb3812..0000000000000000000000000000000000000000
--- a/conversations/conv_000522.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "5338-284437",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-284437.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
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-      "position_frames": 0
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-      "utterance_id": "5338-24615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-24615.flac |",
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-    {
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000523.json b/conversations/conv_000523.json
deleted file mode 100644
index 14aa4c8ed7df7ece1cd1b976dd709ae3d5d16113..0000000000000000000000000000000000000000
--- a/conversations/conv_000523.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "utterance_id": "3752-4944",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
-      "real_speaker_id": "3752",
-      "position_frames": 0
-    },
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147965.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147964.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 27.750720871350445,
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-      "utterance_id": "1993-147965",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1993-147965.flac |",
-      "real_speaker_id": "1993",
-      "position_frames": 55213
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-  ],
-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Electric_shaver_toothbrush/35021_1.wav",
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-      "event_class": "Blender",
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-      "event_class": "laugh",
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-      "duration": 1.12,
-      "start_time": 12.877611944007139,
-      "speaker_id": "1993"
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-      "event_class": "laugh",
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-      "duration": 0.96,
-      "start_time": 21.515512901001944,
-      "speaker_id": "1993"
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-    {
-      "event_class": "laugh",
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-      "duration": 0.9990201577695449,
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-      "speaker_id": "1993"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000524.json b/conversations/conv_000524.json
deleted file mode 100644
index a5ef24682bd42fe916866953907463b2d8a7d0b8..0000000000000000000000000000000000000000
--- a/conversations/conv_000524.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.46488969352821,
-  "num_speakers": 2,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "start_time": 0.0,
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-      "overlap": false,
-      "utterance_id": "174-168635",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-168635.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 5.733798276254546,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
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-      "utterance_id": "174-84280",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-50561.flac |",
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-      "speaker_id": 0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 76617
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-      "segment_id": "seg0005",
-      "speaker_id": 1,
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-      "overlap": false,
-      "utterance_id": "5536-43359",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 65555
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/347708.wav",
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-  "foreground_events": [
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-      "speaker_id": "174"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000525.json b/conversations/conv_000525.json
deleted file mode 100644
index 42f0c6ae005d81e3b5a14cc90d332ac51ea97e42..0000000000000000000000000000000000000000
--- a/conversations/conv_000525.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
-      "position_frames": 0
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-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 6.353533623218846,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
-      "real_speaker_id": "1919",
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-      "segment_id": "seg0003",
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-      "utterance_id": "3853-163249",
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-      "real_speaker_id": "3853",
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-      "utterance_id": "1919-142785",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1919-142785.flac |",
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-      "real_speaker_id": "3853",
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-  "background_events": [],
-  "foreground_events": [
-    {
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-      "duration": 1.24,
-      "start_time": 30.52950340272409,
-      "speaker_id": "3853"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000526.json b/conversations/conv_000526.json
deleted file mode 100644
index dafcaffb7672b15306c8110fc9382f7f958b0627..0000000000000000000000000000000000000000
--- a/conversations/conv_000526.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
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-      "utterance_id": "1272-141231",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
-      "real_speaker_id": "1272",
-      "position_frames": 0
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-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-141231.flac |",
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-      "segment_id": "seg0003",
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-      "utterance_id": "1462-170142",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170142.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
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-      "utterance_id": "1462-170138",
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-      "position_frames": 0
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-  "background_events": [],
-  "foreground_events": [
-    {
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-}
\ No newline at end of file
diff --git a/conversations/conv_000527.json b/conversations/conv_000527.json
deleted file mode 100644
index 9ccc66735409ecb016aaad4216f72af8408048e2..0000000000000000000000000000000000000000
--- a/conversations/conv_000527.json
+++ /dev/null
@@ -1,116 +0,0 @@
-{
-  "num_segments": 5,
-  "total_duration": 31.481963701745393,
-  "num_speakers": 2,
-  "overlap_rate": 0.2,
-  "segments": [
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-      "utterance_id": "2277-149897",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149897.flac |",
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-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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-      "utterance_id": "6345-64257",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-64257.flac |",
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-      "utterance_id": "2277-149874",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2277-149874.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-93302.flac |",
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-  "background_events": [],
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6345/laugh/0000.wav",
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-      "speaker_id": "6345"
-    }
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-}
\ No newline at end of file
diff --git a/conversations/conv_000528.json b/conversations/conv_000528.json
deleted file mode 100644
index 2e58372ddabf84b2cdc7101aede6244abb927830..0000000000000000000000000000000000000000
--- a/conversations/conv_000528.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.365499398014737,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 0
-    },
-    {
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
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-      "utterance_id": "251-136532",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-136532.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
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-      "speaker_id": 0,
-      "start_time": 16.607189391080375,
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 171331
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 21.923628037646004,
-      "end_time": 27.211963369520532,
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-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
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-    {
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-      "speaker_id": 0,
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-      "utterance_id": "3000-15664",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
-      "real_speaker_id": "3000",
-      "position_frames": 246156
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
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-    {
-      "event_class": "laugh",
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-      "speaker_id": "3000"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000529.json b/conversations/conv_000529.json
deleted file mode 100644
index fd2a2f375068df2b20b65eba09f3dd93e28a89fc..0000000000000000000000000000000000000000
--- a/conversations/conv_000529.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 2,
-  "overlap_rate": 0.3333333333333333,
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-      "utterance_id": "3853-163249",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3853-163249.flac |",
-      "real_speaker_id": "3853",
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-      "utterance_id": "7976-105575",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 96100
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-  "background_events": [],
-  "foreground_events": [
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-      "event_class": "Electric_shaver_toothbrush",
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\ No newline at end of file
diff --git a/conversations/conv_000530.json b/conversations/conv_000530.json
deleted file mode 100644
index 0ca1a39358d4ef751fb29efd8bdce2d35af2a422..0000000000000000000000000000000000000000
--- a/conversations/conv_000530.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000531.json b/conversations/conv_000531.json
deleted file mode 100644
index f156291824413078bc556153384bcf088070cf55..0000000000000000000000000000000000000000
--- a/conversations/conv_000531.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 164157
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
-      "start_time": 28.44920224613705,
-      "end_time": 32.0,
-      "duration": 3.5507977538629483,
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-      "duration_frames": 56812,
-      "overlap": false,
-      "utterance_id": "6295-244435",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6295-244435.flac |",
-      "real_speaker_id": "6295",
-      "position_frames": 0
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-  ],
-  "background_events": [
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-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/408348_1.wav",
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-  "paralinguistic_events": [
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/laugh/0008.wav",
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0026.wav",
-      "duration": 0.909743881542767,
-      "start_time": 21.108688953602616,
-      "speaker_id": "1988"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/422/laugh/0024.wav",
-      "duration": 1.02,
-      "start_time": 21.68138841417403,
-      "speaker_id": "422"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/6295/laugh/0032.wav",
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-      "speaker_id": "6295"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000532.json b/conversations/conv_000532.json
deleted file mode 100644
index b41f65150b9126cee471c779c9cd88f5efa2644a..0000000000000000000000000000000000000000
--- a/conversations/conv_000532.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 0,
-      "start_time": 0.0,
-      "end_time": 5.343013596967485,
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-      "start_frame": 0,
-      "duration_frames": 85488,
-      "overlap": false,
-      "utterance_id": "5694-64038",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.937486114091165,
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-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
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-      "start_time": 12.998642752917018,
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-      "duration": 5.522357301295209,
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-      "overlap": false,
-      "utterance_id": "2428-83705",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83705.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 105899
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 19.13463346154907,
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-      "duration": 6.30602360869414,
-      "start_frame": 306154,
-      "duration_frames": 100896,
-      "overlap": false,
-      "utterance_id": "5694-64038",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 85488
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 25.816143697574347,
-      "end_time": 30.223954113328812,
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-      "duration_frames": 70524,
-      "overlap": false,
-      "utterance_id": "2428-83699",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2428-83699.flac |",
-      "real_speaker_id": "2428",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 30.467477578407884,
-      "end_time": 32.0,
-      "duration": 1.532522421592116,
-      "start_frame": 487479,
-      "duration_frames": 24520,
-      "overlap": false,
-      "utterance_id": "2902-9006",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2902-9006.flac |",
-      "real_speaker_id": "2902",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Vacuum_cleaner",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Vacuum_cleaner/271460.wav",
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-  "foreground_events": [
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-    {
-      "event_class": "Dishes",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Dishes/365519_2.wav",
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-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2428/laugh/0059.wav",
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-      "event_class": "cough",
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-      "duration": 1.1827924681639022,
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-    {
-      "event_class": "laugh",
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-      "duration": 1.36,
-      "start_time": 30.64,
-      "speaker_id": "2902"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000533.json b/conversations/conv_000533.json
deleted file mode 100644
index 7366bfbed3f21f11777811d81036d566e1bf7b72..0000000000000000000000000000000000000000
--- a/conversations/conv_000533.json
+++ /dev/null
@@ -1,145 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.52948272518467,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "start_time": 0.0,
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-      "utterance_id": "5694-64038",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64038.flac |",
-      "real_speaker_id": "5694",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 2,
-      "start_time": 5.4841777979994495,
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-      "utterance_id": "7850-111771",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-111771.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
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-      "speaker_id": 0,
-      "start_time": 15.233856428967014,
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-      "utterance_id": "5694-64029",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5694-64029.flac |",
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-      "utterance_id": "1988-24833",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1988-24833.flac |",
-      "real_speaker_id": "1988",
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-    {
-      "segment_id": "seg0005",
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-      "utterance_id": "7850-73752",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-73752.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
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-    {
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-    {
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-      "duration": 1.0,
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-      "speaker_id": "5694"
-    },
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/1988/laugh/0002.wav",
-      "duration": 1.18,
-      "start_time": 22.170373761547324,
-      "speaker_id": "1988"
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-    {
-      "event_class": "cough",
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-      "duration": 1.0517079219703,
-      "start_time": 25.964132525109463,
-      "speaker_id": "1988"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000534.json b/conversations/conv_000534.json
deleted file mode 100644
index 616cbe42ce07004319d9d6e2f1ad17ce0851538b..0000000000000000000000000000000000000000
--- a/conversations/conv_000534.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.704769655134413,
-  "num_speakers": 2,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "utterance_id": "2803-154320",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154320.flac |",
-      "real_speaker_id": "2803",
-      "position_frames": 0
-    },
-    {
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
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-      "utterance_id": "2803-154320",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154320.flac |",
-      "real_speaker_id": "2803",
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-      "utterance_id": "2035-152373",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
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-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
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-      "real_speaker_id": "2803",
-      "position_frames": 0
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-      "segment_id": "seg0005",
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-      "duration_frames": 45571,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
-      "real_speaker_id": "2035",
-      "position_frames": 184253
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
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-  "paralinguistic_events": [
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-      "duration": 1.0,
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2035/cough/0019.wav",
-      "duration": 1.38,
-      "start_time": 27.410696833838468,
-      "speaker_id": "2035"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000535.json b/conversations/conv_000535.json
deleted file mode 100644
index 0774a36fe15e0843b02906f29fa4c6d64dfc9b8a..0000000000000000000000000000000000000000
--- a/conversations/conv_000535.json
+++ /dev/null
@@ -1,173 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 4.951454434080173,
-      "duration": 4.951454434080173,
-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "6313-76958",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-76958.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
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-      "start_time": 5.586108249764793,
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-      "utterance_id": "6313-66129",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66129.flac |",
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-    {
-      "segment_id": "seg0002",
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-      "utterance_id": "6313-66129",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000536.json b/conversations/conv_000536.json
deleted file mode 100644
index da7a7fb5605fd5b28ea0c518f31bfb2108976325..0000000000000000000000000000000000000000
--- a/conversations/conv_000536.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000537.json b/conversations/conv_000537.json
deleted file mode 100644
index 18946834ab9e2ad111e488d9cf697ddd428e6065..0000000000000000000000000000000000000000
--- a/conversations/conv_000537.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-  "background_events": [],
-  "foreground_events": [
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-      "start_time": 30.86,
-      "speaker_id": "2412"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000538.json b/conversations/conv_000538.json
deleted file mode 100644
index f8c618fa1dbb4a475f8a75c170d93b73dd1e84bd..0000000000000000000000000000000000000000
--- a/conversations/conv_000538.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 6,
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-  "num_speakers": 2,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3000-15664.flac |",
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-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3000/laugh/0037.wav",
-      "duration": 1.28,
-      "start_time": 10.033384391541304,
-      "speaker_id": "3000"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000539.json b/conversations/conv_000539.json
deleted file mode 100644
index 82fedba12cfc6dfe0219803ccb3433aae0801f10..0000000000000000000000000000000000000000
--- a/conversations/conv_000539.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
-    {
-      "segment_id": "seg0000",
-      "speaker_id": 2,
-      "start_time": 0.0,
-      "end_time": 3.819127639948668,
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-      "start_frame": 0,
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-      "overlap": false,
-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
-    },
-    {
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-      "speaker_id": 0,
-      "start_time": 4.728789973319434,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3752-4944.flac |",
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-      "start_time": 10.65191335506784,
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-      "duration_frames": 70758,
-      "overlap": false,
-      "utterance_id": "2086-149220",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149220.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 0
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 15.475240611158856,
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-      "start_frame": 247603,
-      "duration_frames": 106789,
-      "overlap": false,
-      "utterance_id": "8297-275154",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275154.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 22.954989335164658,
-      "end_time": 26.891915408487886,
-      "duration": 3.9369260733232294,
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-      "duration_frames": 62990,
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-      "utterance_id": "2086-149214",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2086-149214.flac |",
-      "real_speaker_id": "2086",
-      "position_frames": 61106
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 27.79701973221525,
-      "end_time": 32.0,
-      "duration": 4.202980267784749,
-      "start_frame": 444752,
-      "duration_frames": 67247,
-      "overlap": false,
-      "utterance_id": "8297-275154",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275154.flac |",
-      "real_speaker_id": "8297",
-      "position_frames": 106789
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Electric_shaver_toothbrush",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Electric_shaver_toothbrush/417229.wav",
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-  "foreground_events": [
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-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/271399_4.wav",
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-  "paralinguistic_events": [
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-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/3752/laugh/0023.wav",
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/laugh/0025.wav",
-      "duration": 0.5926171372617738,
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-      "speaker_id": "2086"
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-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2086/cough/0037.wav",
-      "duration": 0.31176429129247285,
-      "start_time": 22.456750655733746,
-      "speaker_id": "2086"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000540.json b/conversations/conv_000540.json
deleted file mode 100644
index ee110ed2e978eaf4dfbf30f073a41b432a23b7eb..0000000000000000000000000000000000000000
--- a/conversations/conv_000540.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 0
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-      "segment_id": "seg0001",
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-      "start_time": 4.211733772741919,
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-      "utterance_id": "5895-34622",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34622.flac |",
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-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 0
-    },
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-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 18.51744191420479,
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-      "utterance_id": "7850-281318",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7850-281318.flac |",
-      "real_speaker_id": "7850",
-      "position_frames": 56058
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 0,
-      "start_time": 25.252723781495305,
-      "end_time": 28.528163269302684,
-      "duration": 3.27543948780738,
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-      "duration_frames": 52407,
-      "overlap": false,
-      "utterance_id": "3536-23268",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3536-23268.flac |",
-      "real_speaker_id": "3536",
-      "position_frames": 101109
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 2,
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-      "end_time": 32.0,
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-      "utterance_id": "5895-34615",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34615.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Running_water/41634.wav",
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-      "start_time": 0,
-      "speaker_id": "7850"
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-    {
-      "event_class": "laugh",
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-      "speaker_id": "3536"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000541.json b/conversations/conv_000541.json
deleted file mode 100644
index 40ddd3b886df0b36793c8098a2e5db80bcaaba89..0000000000000000000000000000000000000000
--- a/conversations/conv_000541.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.447307909347415,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
-      "real_speaker_id": "3081",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
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-      "utterance_id": "3081-166546",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3081-166546.flac |",
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-      "event_class": "Electric_shaver_toothbrush",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000542.json b/conversations/conv_000542.json
deleted file mode 100644
index abe2ea1818ace4ac53de7bcf25be7dbbfca37f01..0000000000000000000000000000000000000000
--- a/conversations/conv_000542.json
+++ /dev/null
@@ -1,151 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 30.971717927309182,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "utterance_id": "6345-64257",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6345-64257.flac |",
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\ No newline at end of file
diff --git a/conversations/conv_000543.json b/conversations/conv_000543.json
deleted file mode 100644
index 61fe24c02974f76a55626de6d63532806f8127a0..0000000000000000000000000000000000000000
--- a/conversations/conv_000543.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
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-  "total_duration": 32.0,
-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000544.json b/conversations/conv_000544.json
deleted file mode 100644
index 321924908430903434f957c5198ba835279c0edf..0000000000000000000000000000000000000000
--- a/conversations/conv_000544.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
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-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000545.json b/conversations/conv_000545.json
deleted file mode 100644
index 09dff2086dc0cda3d2695fc5cde7e70482026d15..0000000000000000000000000000000000000000
--- a/conversations/conv_000545.json
+++ /dev/null
@@ -1,117 +0,0 @@
-{
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\ No newline at end of file
diff --git a/conversations/conv_000546.json b/conversations/conv_000546.json
deleted file mode 100644
index fdbd4b1f262c2923cc93c97fa92a036964cb502f..0000000000000000000000000000000000000000
--- a/conversations/conv_000546.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
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-      "position_frames": 57837
-    }
-  ],
-  "background_events": [
-    {
-      "event_class": "Frying",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Frying/347708.wav",
-      "duration": 21.05861678004535,
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-  "foreground_events": [
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-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/72558_7.wav",
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-  ],
-  "paralinguistic_events": [
-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/7850/laugh/0036.wav",
-      "duration": 1.4611585700773366,
-      "start_time": 11.136173486578912,
-      "speaker_id": "7850"
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-    {
-      "event_class": "laugh",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/2803/laugh/0018.wav",
-      "duration": 1.2,
-      "start_time": 20.395320605085292,
-      "speaker_id": "2803"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000547.json b/conversations/conv_000547.json
deleted file mode 100644
index 84df6ab0989ee1a6bf29d5813f1b63339eeb03d2..0000000000000000000000000000000000000000
--- a/conversations/conv_000547.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.79036289205312,
-  "num_speakers": 3,
-  "overlap_rate": 0.14285714285714285,
-  "segments": [
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-      "speaker_id": 1,
-      "start_time": 0.0,
-      "end_time": 6.46962378957384,
-      "duration": 6.46962378957384,
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-      "duration_frames": 103513,
-      "overlap": false,
-      "utterance_id": "5338-284437",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-284437.flac |",
-      "real_speaker_id": "5338",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 0,
-      "start_time": 6.8551565588673835,
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-      "start_frame": 109682,
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-      "utterance_id": "7976-110523",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110523.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
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-    {
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-      "speaker_id": 2,
-      "start_time": 12.276865230249085,
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-      "start_frame": 196429,
-      "duration_frames": 55279,
-      "overlap": false,
-      "utterance_id": "8842-302196",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302196.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 0,
-      "start_time": 16.376771608003853,
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-      "duration_frames": 61911,
-      "overlap": false,
-      "utterance_id": "7976-105575",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-105575.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 20.724294740946952,
-      "end_time": 23.914719397915242,
-      "duration": 3.1904246569682893,
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-      "duration_frames": 51046,
-      "overlap": false,
-      "utterance_id": "8842-304647",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-304647.flac |",
-      "real_speaker_id": "8842",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 24.88676911711087,
-      "end_time": 28.624372169305133,
-      "duration": 3.737603052194263,
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-      "duration_frames": 59801,
-      "overlap": false,
-      "utterance_id": "7976-110124",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/7976-110124.flac |",
-      "real_speaker_id": "7976",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0006",
-      "speaker_id": 1,
-      "start_time": 29.101195348317592,
-      "end_time": 31.79036289205312,
-      "duration": 2.689167543735529,
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-      "utterance_id": "5338-284437",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5338-284437.flac |",
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Alarm_bell_ringing",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Alarm_bell_ringing/271399_1.wav",
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-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/5338/cough/0035.wav",
-      "duration": 1.02,
-      "start_time": 0,
-      "speaker_id": "5338"
-    },
-    {
-      "event_class": "cough",
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-      "event_class": "laugh",
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-      "duration": 0.9454457265125589,
-      "start_time": 19.533687018219172,
-      "speaker_id": "8842"
-    }
-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000548.json b/conversations/conv_000548.json
deleted file mode 100644
index e04ce3b44f630960ec5dcfe29241887a976120ca..0000000000000000000000000000000000000000
--- a/conversations/conv_000548.json
+++ /dev/null
@@ -1,110 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.3333333333333333,
-  "segments": [
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-      "utterance_id": "5536-43358",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
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-      "segment_id": "seg0001",
-      "speaker_id": 1,
-      "start_time": 3.8166625620649235,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-168635.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 0
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-      "utterance_id": "5536-43363",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43363.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0003",
-      "speaker_id": 1,
-      "start_time": 16.472789177227938,
-      "end_time": 21.629281305731883,
-      "duration": 5.1564921285039444,
-      "start_frame": 263564,
-      "duration_frames": 82503,
-      "overlap": false,
-      "utterance_id": "174-168635",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-168635.flac |",
-      "real_speaker_id": "174",
-      "position_frames": 72314
-    },
-    {
-      "segment_id": "seg0004",
-      "speaker_id": 2,
-      "start_time": 22.588197294599766,
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-      "overlap": false,
-      "utterance_id": "251-137823",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/251-137823.flac |",
-      "real_speaker_id": "251",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 0,
-      "start_time": 26.72878393159274,
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-      "duration": 5.271216068407259,
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-      "utterance_id": "5536-43358",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43358.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 61826
-    }
-  ],
-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Blender",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/foreground/Blender/116434_1.wav",
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-  "paralinguistic_events": [
-    {
-      "event_class": "cough",
-      "wav_path": "./conversation_data/paralinguistic_filtered/dev-clean/174/cough/0051.wav",
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-      "speaker_id": "174"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000549.json b/conversations/conv_000549.json
deleted file mode 100644
index 631b151a0313d6498cd3dbde745baa05325983c0..0000000000000000000000000000000000000000
--- a/conversations/conv_000549.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 31.26321845189368,
-  "num_speakers": 3,
-  "overlap_rate": 0.2857142857142857,
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-      "overlap": false,
-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
-      "speaker_id": 1,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
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-      "overlap": false,
-      "utterance_id": "3576-138058",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3576-138058.flac |",
-      "real_speaker_id": "3576",
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-    },
-    {
-      "segment_id": "seg0003",
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-      "utterance_id": "1272-128104",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1272-128104.flac |",
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-    {
-      "segment_id": "seg0004",
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-      "real_speaker_id": "3576",
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-    {
-      "segment_id": "seg0005",
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-      "utterance_id": "6313-66125",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6313-66125.flac |",
-      "real_speaker_id": "6313",
-      "position_frames": 164358
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-    {
-      "segment_id": "seg0006",
-      "speaker_id": 2,
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-      "utterance_id": "1272-141231",
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-      "real_speaker_id": "1272",
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-  "background_events": [],
-  "foreground_events": [
-    {
-      "event_class": "Vacuum_cleaner",
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-}
\ No newline at end of file
diff --git a/conversations/conv_000550.json b/conversations/conv_000550.json
deleted file mode 100644
index 228dc20cc45885aa7d3cfcc2ae552a5fb8058289..0000000000000000000000000000000000000000
--- a/conversations/conv_000550.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
-  "segments": [
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-      "speaker_id": 2,
-      "start_time": 0.0,
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-      "duration": 5.792694491838898,
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-      "utterance_id": "2803-161169",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-161169.flac |",
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-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0001",
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\ No newline at end of file
diff --git a/conversations/conv_000551.json b/conversations/conv_000551.json
deleted file mode 100644
index 17e02a94af232c3e0de8feaa95c89ed65d32e097..0000000000000000000000000000000000000000
--- a/conversations/conv_000551.json
+++ /dev/null
@@ -1,124 +0,0 @@
-{
-  "num_segments": 6,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34622.flac |",
-      "real_speaker_id": "5895",
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-  "background_events": [
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-      "event_class": "Running_water",
-      "wav_path": "conversation_data/synthetic/audio/eval/soundbank/background_long/Running_water/371913_1.wav",
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\ No newline at end of file
diff --git a/conversations/conv_000552.json b/conversations/conv_000552.json
deleted file mode 100644
index 0bd0d96adc65575182ee2fac49fec35315690ef4..0000000000000000000000000000000000000000
--- a/conversations/conv_000552.json
+++ /dev/null
@@ -1,131 +0,0 @@
-{
-  "num_segments": 6,
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\ No newline at end of file
diff --git a/conversations/conv_000553.json b/conversations/conv_000553.json
deleted file mode 100644
index 44917e1b6a4d58f3501a4d28c149184db44e2277..0000000000000000000000000000000000000000
--- a/conversations/conv_000553.json
+++ /dev/null
@@ -1,186 +0,0 @@
-{
-  "num_segments": 8,
-  "total_duration": 32.0,
-  "num_speakers": 3,
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\ No newline at end of file
diff --git a/conversations/conv_000554.json b/conversations/conv_000554.json
deleted file mode 100644
index 3633d53e74dfd9b9b1649ef8b2fbef9fcb233dee..0000000000000000000000000000000000000000
--- a/conversations/conv_000554.json
+++ /dev/null
@@ -1,137 +0,0 @@
-{
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-  "num_speakers": 3,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8297-275154.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/422-122949.flac |",
-      "real_speaker_id": "422",
-      "position_frames": 0
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-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 30.97554279398883,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5895-34622.flac |",
-      "real_speaker_id": "5895",
-      "position_frames": 89594
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-  "background_events": [
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-      "event_class": "Running_water",
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-      "speaker_id": "8297"
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-      "event_class": "laugh",
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-      "duration": 1.62,
-      "start_time": 23.035828822886398,
-      "speaker_id": "422"
-    }
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-}
\ No newline at end of file
diff --git a/conversations/conv_000555.json b/conversations/conv_000555.json
deleted file mode 100644
index 4ef3eb85430784f760cce2047a71257a54e51e54..0000000000000000000000000000000000000000
--- a/conversations/conv_000555.json
+++ /dev/null
@@ -1,152 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
-  "segments": [
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-      "speaker_id": 0,
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-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 0
-    },
-    {
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-      "speaker_id": 1,
-      "start_time": 5.166315543206439,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2035-152373.flac |",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143396.flac |",
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-      "position_frames": 0
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-      "segment_id": "seg0006",
-      "speaker_id": 0,
-      "start_time": 31.66244366566153,
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-      "overlap": false,
-      "utterance_id": "1673-143397",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1673-143397.flac |",
-      "real_speaker_id": "1673",
-      "position_frames": 133814
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-  "background_events": [
-    {
-      "event_class": "Blender",
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000556.json b/conversations/conv_000556.json
deleted file mode 100644
index 86fa5eabd76aca5bd0e48086773a359febce6e50..0000000000000000000000000000000000000000
--- a/conversations/conv_000556.json
+++ /dev/null
@@ -1,138 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/8842-302203.flac |",
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-      "real_speaker_id": "8842",
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-      "overlap": false,
-      "utterance_id": "5536-43359",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/5536-43359.flac |",
-      "real_speaker_id": "5536",
-      "position_frames": 0
-    }
-  ],
-  "background_events": [
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-  "paralinguistic_events": [
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-      "speaker_id": "8842"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000557.json b/conversations/conv_000557.json
deleted file mode 100644
index 6ee754686cbd379410c46fd3be2b24d24812c9cd..0000000000000000000000000000000000000000
--- a/conversations/conv_000557.json
+++ /dev/null
@@ -1,144 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/174-84280.flac |",
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-      "real_speaker_id": "174",
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-  "background_events": [],
-  "foreground_events": [
-    {
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-      "speaker_id": "2035"
-    }
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-}
\ No newline at end of file
diff --git a/conversations/conv_000558.json b/conversations/conv_000558.json
deleted file mode 100644
index 98a2308ec2c4f5ae11d4921890379e99ee197f53..0000000000000000000000000000000000000000
--- a/conversations/conv_000558.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.16666666666666666,
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
-      "real_speaker_id": "3170",
-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/3170-137482.flac |",
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-      "segment_id": "seg0004",
-      "speaker_id": 1,
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-      "utterance_id": "1462-170145",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170145.flac |",
-      "real_speaker_id": "1462",
-      "position_frames": 0
-    },
-    {
-      "segment_id": "seg0005",
-      "speaker_id": 1,
-      "start_time": 28.1530454313706,
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-      "duration": 3.8469545686293998,
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-      "utterance_id": "1462-170138",
-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/1462-170138.flac |",
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-      "position_frames": 84860
-    }
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-  "background_events": [],
-  "foreground_events": [
-    {
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-      "speaker_id": "1462"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000559.json b/conversations/conv_000559.json
deleted file mode 100644
index b1241a1b50089e0e2f11d65f35d84f97c8aec423..0000000000000000000000000000000000000000
--- a/conversations/conv_000559.json
+++ /dev/null
@@ -1,158 +0,0 @@
-{
-  "num_segments": 7,
-  "total_duration": 32.0,
-  "num_speakers": 3,
-  "overlap_rate": 0.0,
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-      "position_frames": 0
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/2803-154328.flac |",
-      "real_speaker_id": "2803",
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-      "segment_id": "seg0006",
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-      "wav_path": "flac -c -d -s /home/zekun.lan/Udata/conversation_data/dev_clean_persession_wav/6241-61946.flac |",
-      "real_speaker_id": "6241",
-      "position_frames": 0
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-  "background_events": [
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-      "speaker_id": "6241"
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-  ]
-}
\ No newline at end of file
diff --git a/conversations/conv_000560.json b/conversations/conv_000560.json
deleted file mode 100644
index 935cfe184187a53bf8f1a3bd765ca5778df5e1a1..0000000000000000000000000000000000000000
--- a/conversations/conv_000560.json
+++ /dev/null
@@ -1,123 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 32.0,
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-      "speaker_id": "174"
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-}
\ No newline at end of file
diff --git a/conversations/conv_000561.json b/conversations/conv_000561.json
deleted file mode 100644
index 13bbb99f2964ef04f68c1141e3165044532ef37e..0000000000000000000000000000000000000000
--- a/conversations/conv_000561.json
+++ /dev/null
@@ -1,130 +0,0 @@
-{
-  "num_segments": 6,
-  "total_duration": 31.7012512974255,
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diff --git a/conversations/conversations.list b/conversations/conversations.list
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index 2e11c45f22b7f17b143a6552c67ce5c7c15e0f51..0000000000000000000000000000000000000000
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