UNMATCHED__13_Nina_Williams_Silent_Assassin.json

music/exemplars/formula_cards/UNMATCHED__13_Nina_Williams_Silent_Assassin.json

{
 "schema": "formula-card/v1",
 "consumer": "docs/proposals/music/MASTERPIECE_PROGRAM.md rung 2 (the archetype synthesis -> MASTERPIECE_STANDARD.md)",
 "tier": "RUNG-1 MEASURED",
 "legal_posture": "ANALYSIS FOR UNDERSTANDING ONLY. Audio lawfully obtained by Josh, read from disk, measured, and never copied, redistributed, or used as model input of any kind.",
 "track_id": "UNMATCHED__13_Nina_Williams_Silent_Assassin",
 "title": null,
 "game": null,
 "composer": null,
 "purpose_class": null,
 "source_path": "D:\\audio\\exemplars\\iTunes_Sweep\\TEKKEN Project & Bandai Namco Game Music\\Tekken 2 (Original Soundtrack)\\13 Nina Williams, Silent Assassin.m4a",
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 "source_channels": 2,
 "lossless_source": false,
 "analysis_sample_rate_hz": 22050,
 "decoder": "ffmpeg.exe :: ffmpeg version 9.0-full_build-www.gyan.dev Copyright (c) 2000-2026 the FFmpeg developers",
 "measured_at": "2026-08-07T06:06:47+00:00",
 "format_induced_limit": "lossy source (aac); high-band timbre figures carry codec artefacts and the card declares it",
 "control": {
  "controls_passed": 24,
  "controls_total": 24,
  "ran_at": "2026-08-06T20:41:42+00:00",
  "ffmpeg_version": "ffmpeg version 9.0-full_build-www.gyan.dev Copyright (c) 2000-2026 the FFmpeg developers",
  "note": "This measurement is admissible only because the positive control recovered its planted answers in the same process, immediately before it."
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     "is_repeat": true
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   "octave_ambiguity_note": "Beat trackers pick a metrical level, and half/double-time readings are a real and known property, not an error -- the rig's own control plants 120 bpm and this estimator returns 60. Every bar figure on this card (time-to-hook in bars, the complexity index's bar length) inherits whichever level was picked, so compare bar counts within a card, never across cards, until rung 2 pins the metrical level per class.",
   "windowed_tempo_stability": {
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    "note": "Bar arithmetic on this card uses 4 beats per bar at the baseline tempo. The onset period beside it is MEASURED; the signature is not."
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   "pitch_contour": "UD------D-UU-D-",
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     "bar": 71,
     "at_s": 65.94,
     "delta": -0.341,
     "at_section_boundary": false
    }
   ],
   "steps_at_section_boundaries": 0,
   "steps_total": 3,
   "boundary_step_share": 0.0,
   "hypothesis_note": "Section 11.6 expects masterpieces to step complexity AT structural boundaries and hold it flat inside sections. This share is the measurement of that claim on this track; the corpus decides, not us."
  },
  "texture_and_density": {
   "note_rate_per_s": 1.781,
   "melodic_salience": 0.8527,
   "voiced_fraction": 0.4808,
   "note_count": 127,
   "mean_lanes": 8.035,
   "max_lanes": 9
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  "dynamics": {
   "dynamic_range_db_p95_minus_p10": 10.38,
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   "peak_at_s": 0.0,
   "arc_curve_db": [
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   "arc_times_s": [
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  },
  "register": {
   "melody_span_semitones": 13.0,
   "melody_tessitura_midi": 40.33,
   "bass_floor_band": {
    "sub": 0.01382,
    "low_bass": 0.29376,
    "bass": 0.24445,
    "low_mid": 0.14537,
    "mid": 0.09734,
    "upper_mid": 0.05717,
    "presence": 0.04328,
    "brilliance": 0.07888,
    "air": 0.02569,
    "ultra": 0.0
   },
   "octave_band_profile": {
    "sub": 0.01382,
    "low_bass": 0.29376,
    "bass": 0.24445,
    "low_mid": 0.14537,
    "mid": 0.09734,
    "upper_mid": 0.05717,
    "presence": 0.04328,
    "brilliance": 0.07888,
    "air": 0.02569,
    "ultra": 0.0
   }
  },
  "cadence_and_ending": {
   "loop_seam": {
    "measurable": true,
    "seam_distance": 0.98439,
    "interior_distance_median": 0.02863,
    "seam_ratio": 34.378,
    "seam_clean": false,
    "tail_rms_over_mid": 0.0,
    "head_rms_over_mid": 0.877,
    "tail_rms_trend": -0.0338,
    "head_rms_trend": -0.3441,
    "baked_fade_out": false,
    "baked_fade_in": false
   },
   "ending": "through_or_loop",
   "cadence_census_note": "A cadence census needs harmonic transcription and is a rung-2 dimension; the seam measurement is what rung 1 can honestly report about how it ends."
  },
  "timbre": {
   "spectral_centroid_hz_mean": 2928.6,
   "spectral_centroid_curve_hz": [
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   "spectral_rolloff85_hz_mean": 5771.8,
   "spectral_flatness_mean": 0.03276,
   "signature_colour": "bright"
  }
 }
}

Generated by harness/site/structure_site.py — the URL path is the repo path. review root