{
  "purpose": "New companion audio; no associated new model responses",
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  "source_noise_sha256": "6714b1bc2d4d3ca4e340387c9295ee2ef75296106451d5a1b14999e3236a9abc",
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  "boundary_source": "Historical automatic forced alignment",
  "human_phonetic_verification": false,
  "residual_cues_audited": false,
  "common_gain": 0.9080760073292201,
  "common_gain_db": -0.8375559771080144,
  "quantization": "Shared-gain float32 arrays, rounded once to PCM16; no dithering or separate normalization",
  "requested_local_snr_db": -10.0,
  "effective_local_snr_after_pcm16_db": -9.999996578064552,
  "mixture_audit_before_quantization": {
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    "event_samples_half_open": [
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    ],
    "energy_median_sample": 2138,
    "noise_gain_before_common_attenuation": 0.8071123257272295,
    "requested_local_snr_db": -10.0,
    "measured_local_snr_db": -10.0,
    "numeral_fraction_of_event_energy": 0.8320506423728523,
    "unscaled_mixture_peak": 1.089115880188035,
    "boundary_convention": "zero-based, start inclusive, end exclusive"
  },
  "spillover_note": "Full machinery event also overlaps minutes; this is not numeral-only noise",
  "files": {
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      "path": "audio/reference.wav",
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      "channels": 1,
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      "duration_seconds": 1.8118125
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    "machinery": {
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    "segment_silenced": {
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      "channels": 1,
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  },
  "verification": {
    "all_same_shape": true,
    "silenced_region_zero": true,
    "outside_silence_matches_reference": true,
    "outside_event_matches_reference": true,
    "clipping_avoided": true,
    "model_calls": 0,
    "gpu_allocations": 0,
    "browser_playback_checked": false,
    "human_listening_performed": false
  },
  "runtime": {
    "python": "3.12.14",
    "numpy": "2.3.5",
    "scipy": "1.17.0"
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}