{
 "made_by": "python -m scripts.engine_story --treble",
 "sample": {
  "name": "p238_029",
  "file": "test/p238_029_mic1.flac",
  "sha256": "f03c2ade4c5aef60f014272ecc4724645abd3de9eee9dd5ea466920c2fb35549",
  "dataset": "VCTK 0.92",
  "credit": "Yamagishi, Veaux & MacDonald (2019)",
  "source_url": "https://doi.org/10.7488/ds/2645",
  "license": "CC BY 4.0",
  "license_url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "seconds": 5.537,
 "damage": {
  "seed": 3,
  "chain": [
   {
    "name": "Mains hum",
    "detail": "60 Hz and its harmonics, 16 dB below the voice's average"
   },
   {
    "name": "Hiss",
    "detail": "steady white noise, 16 dB below the voice's average"
   },
   {
    "name": "Two dropouts",
    "detail": "40 ms of silence each, at 1.59 s and 3.57 s"
   },
   {
    "name": "A low sample rate",
    "detail": "saved at 14 kHz, like an old upload, which removes the sound above 7 kHz. A little sound still leaks past the resampling filter. Step 1 counts any band no more than 45 dB below the speech band (0.5 to 4 kHz), so it puts the top at 8.1 kHz"
   }
  ],
  "dropout_starts": [
   1.591,
   3.566
  ]
 },
 "diagnosis": {
  "labels": [
   "dropouts",
   "hum",
   "narrow_band",
   "steady_noise"
  ],
  "measurements": {
   "too_short": false,
   "snr_db": 22.039778105937337,
   "floor_db": -43.22384851179606,
   "flatness": 0.29908895977030536,
   "wobble_db": 1.6081522066192988,
   "falls_per_second": 2.1957913998170175,
   "held_tones": 0.245662100456621,
   "clipped_fraction": 0.0,
   "lost_packets": 2,
   "mains_hz": 60,
   "bandwidth_hz": 8121
  }
 },
 "findings": [
  {
   "kind": "dropout",
   "start": 1.592,
   "end": 1.63,
   "low_hz": 30,
   "high_hz": 24000,
   "detail": "38 ms of silence",
   "outline": true
  },
  {
   "kind": "dropout",
   "start": 3.567,
   "end": 3.604,
   "low_hz": 30,
   "high_hz": 24000,
   "detail": "38 ms of silence",
   "outline": true
  },
  {
   "kind": "hum",
   "start": 0.0,
   "end": 5.537,
   "low_hz": 30,
   "high_hz": 400,
   "detail": "60 Hz and its harmonics",
   "outline": true
  },
  {
   "kind": "hiss",
   "start": 0.0,
   "end": 5.537,
   "low_hz": 400,
   "high_hz": 8121,
   "detail": "a steady floor 22 dB under the loudest speech",
   "outline": false
  },
  {
   "kind": "treble",
   "start": 0.0,
   "end": 5.537,
   "low_hz": 8121,
   "high_hz": 24000,
   "detail": "little above 8.1 kHz",
   "outline": true
  }
 ],
 "scan": {
  "damaged": [
   {
    "kind": "hum",
    "start": 0.0,
    "end": 5.537,
    "severity": "high",
    "detail": "Steady 60 Hz hum, 39 dB above nearby frequencies.",
    "suggestion": "dehum"
   },
   {
    "kind": "muffled",
    "start": 0.0,
    "end": 5.537,
    "severity": "low",
    "detail": "Little content above 8.1 kHz, like a phone line or low-bitrate file. AudioSR can rebuild it; what it adds is inferred.",
    "suggestion": "detail"
   },
   {
    "kind": "dropout",
    "start": 1.592,
    "end": 1.63,
    "severity": "medium",
    "detail": "38 ms of digital silence inside the audio. Gaps up to 100 ms can be filled from the sound on each side; the fill is an estimate.",
    "suggestion": "fill_gaps"
   },
   {
    "kind": "clicks",
    "start": 1.687,
    "end": 3.838,
    "severity": "medium",
    "detail": "14 clicks or crackle pops, each redrawn from nearby samples.",
    "suggestion": "declick"
   },
   {
    "kind": "dropout",
    "start": 3.567,
    "end": 3.604,
    "severity": "medium",
    "detail": "38 ms of digital silence inside the audio. Gaps up to 100 ms can be filled from the sound on each side; the fill is an estimate.",
    "suggestion": "fill_gaps"
   }
  ],
  "clean": [
   {
    "kind": "clicks",
    "start": 0.4,
    "end": 3.835,
    "severity": "medium",
    "detail": "26 clicks or crackle pops, each redrawn from nearby samples.",
    "suggestion": "declick"
   }
  ]
 },
 "clicks": {
  "damaged": [
   1.687,
   1.902,
   1.904,
   1.905,
   1.908,
   1.908,
   1.91,
   1.911,
   1.912,
   1.913,
   1.914,
   3.439,
   3.835,
   3.838
  ],
  "clean": [
   0.4,
   0.437,
   0.599,
   1.858,
   1.901,
   1.901,
   1.901,
   1.902,
   1.912,
   1.912,
   1.913,
   1.913,
   1.914,
   1.914,
   1.917,
   1.917,
   2.63,
   2.631,
   2.706,
   2.709,
   2.71,
   2.71,
   3.828,
   3.832,
   3.834,
   3.835
  ]
 },
 "steps": [
  {
   "mode": "fill_gaps",
   "name": "Dropout filling",
   "reason": "Short holes of lost audio were found, so they are filled from nearby sound.",
   "ran": true,
   "picture": "/engine/step-1.webp",
   "changed": "2 gaps filled, 76 ms in all, from the sound on each side.",
   "report": {
    "mode": "fill_gaps",
    "engine": "solipsium-gapfill-v1",
    "generative": false,
    "bypass": false,
    "filled_gaps": 2,
    "filled_ms": 76,
    "skipped_gaps": 0,
    "note": "Filled sound is continued from each side of a gap, not the lost audio."
   },
   "scores": {
    "estoi": 0.815,
    "si_sdr_db": 8.77,
    "lsd_high": 3.679,
    "lsd_low": 2.339,
    "floor_db": -43.2
   }
  },
  {
   "mode": "dehum",
   "name": "Hum removal",
   "reason": "Mains hum was found, so it is notched out before any cleanup.",
   "ran": true,
   "picture": "/engine/step-2.webp",
   "changed": "Hum notched out at 60, 120, 180 and 240 Hz.",
   "report": {
    "mode": "dehum",
    "engine": "solipsium-dehum-v1",
    "generative": false,
    "bypass": false,
    "mains_hz": 60,
    "notched_hz": [
     60,
     120,
     180,
     240
    ]
   },
   "scores": {
    "estoi": 0.832,
    "si_sdr_db": 9.5,
    "lsd_high": 3.68,
    "lsd_low": 2.316,
    "floor_db": -49.0
   }
  },
  {
   "mode": "speech_fullband",
   "name": "Full-band speech cleanup",
   "reason": "A steady noise floor was found, so it is removed.",
   "ran": true,
   "picture": "/engine/step-3.webp",
   "changed": "The quietest moments fell from -49 dB to silence.",
   "report": {
    "mode": "speech_fullband",
    "engine": "deepfilternet3",
    "generative": false,
    "note": "Speech denoising; can suppress music and alter compressed or distant voices."
   },
   "scores": {
    "estoi": 0.882,
    "si_sdr_db": 9.46,
    "lsd_high": 3.263,
    "lsd_low": 1.399,
    "floor_db": -120.0
   }
  },
  {
   "mode": null,
   "name": "Treble rebuilding",
   "reason": "Little high-frequency sound was found, like a phone line or an old tape. The measured repairs cannot add it back. AudioSR reconstruction can, a passage at a time, and what it adds is inferred.",
   "ran": false
  }
 ],
 "labels": [
  "dropouts",
  "hum",
  "narrow_band",
  "steady_noise"
 ],
 "treble": {
  "ran": true,
  "engine": "audiosr-studio",
  "generative": true,
  "model_settings": {
   "steps": 100,
   "guidance": 2.6,
   "seed": 42,
   "model": "basic"
  }
 },
 "scores": {
  "damaged": {
   "estoi": 0.804,
   "si_sdr_db": 9.04,
   "lsd_high": 3.746,
   "lsd_low": 2.346,
   "floor_db": -43.2
  },
  "step-1": {
   "estoi": 0.815,
   "si_sdr_db": 8.77,
   "lsd_high": 3.679,
   "lsd_low": 2.339,
   "floor_db": -43.2
  },
  "step-2": {
   "estoi": 0.832,
   "si_sdr_db": 9.5,
   "lsd_high": 3.68,
   "lsd_low": 2.316,
   "floor_db": -49.0
  },
  "step-3": {
   "estoi": 0.882,
   "si_sdr_db": 9.46,
   "lsd_high": 3.263,
   "lsd_low": 1.399,
   "floor_db": -120.0
  },
  "treble": {
   "estoi": 0.882,
   "si_sdr_db": 8.6,
   "lsd_high": 1.885,
   "lsd_low": 1.418,
   "floor_db": -108.7
  }
 },
 "pictures": {
  "damaged": {
   "src": "/engine/damaged.webp",
   "width": 1108,
   "height": 400
  },
  "step-1": {
   "src": "/engine/step-1.webp",
   "width": 1108,
   "height": 400
  },
  "step-2": {
   "src": "/engine/step-2.webp",
   "width": 1108,
   "height": 400
  },
  "step-3": {
   "src": "/engine/step-3.webp",
   "width": 1108,
   "height": 400
  },
  "treble": {
   "src": "/engine/treble.webp",
   "width": 1108,
   "height": 400
  }
 },
 "listening": {
  "original": {
   "src": "/engine/original.mp3",
   "gain": 0.9138
  },
  "repaired": {
   "src": "/engine/repaired.mp3",
   "gain": 1.0
  },
  "treble": {
   "src": "/engine/treble.mp3",
   "gain": 1.0
  }
 },
 "beams": {
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}