{
  "checks": {
    "adaptive_continuous_selected": true,
    "adaptive_coverage_triggered": true,
    "bounded_window_execution": true,
    "complete_window_execution": true,
    "improved_over_vad": true,
    "not_sparse": true,
    "recovery_real_time_factor": true,
    "reference_overlap": true,
    "reference_speakers": true,
    "reference_words": true,
    "transcript_time_coverage": true,
    "wer": true
  },
  "corpus": {
    "license": "CC-BY-SA-4.0",
    "name": "CHiME-6",
    "selection_disclosure": "Frozen before any ASR output was inspected. The protocol deterministically selects the alphabetically first CHiME-6 evaluation session (S01), its annotated reference array (U02), channel 1, and the first 300 seconds. Selection used only official annotation metadata and required four speakers plus at least 25% reference overlap; no recognition result was screened or used to choose the source or thresholds.",
    "source": "https://openslr.org/150/"
  },
  "execution": {
    "adaptive": {
      "continuous_fallback_failed": false,
      "continuous_time_coverage_basis_points": 9312,
      "fallback_reason": "transcript_coverage_below_target",
      "selected_pass": "continuous",
      "voice_activity_time_coverage_basis_points": 7336
    },
    "elapsed_milliseconds": 45690,
    "failed_windows": 0,
    "planned_windows": 11,
    "real_time_factor_basis_points": 1523,
    "selected_audio_ms": 300000,
    "skipped_silence_ms": 0,
    "successful_windows": 11
  },
  "model": {
    "name": "ggml-small.bin",
    "sha256": "1be3a9b2063867b937e64e2ec7483364a79917e157fa98c5d94b5c1fffea987b",
    "source_revision": "c521a4b02f422512d734391fdf08bb08c0862f68"
  },
  "passed": true,
  "protocol": {
    "acceptance": {
      "maximum_failed_windows": 0,
      "maximum_recovery_real_time_factor_basis_points": 10000,
      "maximum_wer_basis_points": 6500,
      "minimum_reference_overlap_basis_points": 2500,
      "minimum_reference_speakers": 4,
      "minimum_reference_words": 900,
      "minimum_transcript_time_coverage_basis_points": 8000
    },
    "claim_boundary": "One prospectively selected five-minute English four-speaker CHiME-6 kitchen conversation qualifies the exact local two-pass background path: VAD windows first, then continuous windows only when the frozen 80% transcript-time coverage floor is missed. It reports reference overlap and the absence of speaker labels; it does not qualify diarization, other sessions, homes, languages, accents, devices, generic enhancement, calibrated confidence, production SLOs or certification.",
    "normalization": "Unicode NFKD, lowercase, accents removed, bracketed non-speech events removed, ASCII alphanumeric/apostrophe word tokens",
    "overlap_ms": 1500,
    "voice_activity": {
      "frame_ms": 20,
      "minimum_rms_basis_points": 50,
      "minimum_voice_ms": 1200,
      "pre_roll_ms": 400,
      "trailing_silence_ms": 650
    },
    "window_ms": 30000
  },
  "recognition": {
    "detected_voice_ms": 300000,
    "diarization_executed": false,
    "hypothesis_words": 699,
    "segments": 127,
    "speaker_labelled_segments": 0,
    "transcript_span_ms": 279380,
    "transcript_time_coverage_basis_points": 9312,
    "wer_basis_points": 5528,
    "word_errors": 560
  },
  "recovery_progression": {
    "initial_pass": "voice_activity",
    "initial_transcript_time_coverage_basis_points": 7528,
    "initial_wer_basis_points": 6762,
    "selected_pass": "continuous",
    "transcript_time_coverage_improvement_basis_points": 1784,
    "wer_improvement_basis_points": 1234
  },
  "reference_profile": {
    "overlap_ms": 81860,
    "overlap_share_basis_points": 3400,
    "reference_words": 1013,
    "speaker_word_counts": {
      "P01": 520,
      "P02": 188,
      "P03": 170,
      "P04": 135
    },
    "speakers": [
      "P01",
      "P02",
      "P03",
      "P04"
    ],
    "union_voice_ms": 240740,
    "utterances": 168
  },
  "runtime": {
    "name": "whisper.cpp",
    "server_sha256": "639cf23c070e0c111a57a443f11cef906941f7d1280918e9263f60be73ddbb3e",
    "version": "v1.8.3"
  },
  "schema_version": "mentaview.prospective-conversation-audio-result/v1",
  "source": {
    "duration_ms": 300000,
    "location": "kitchen",
    "official_md5": "f7284ca0f05a90191a5ef1009cf97bfb",
    "official_path": "audio/eval/S01_U02.CH1.wav",
    "trimmed_sha256": "a3cf0c127d6f6f42b03e95dae8de75ffdf39adf15632a66b6cde9afcdfea1fd8"
  }
}