UNMATCHED__25_Field_of_Sunset_full_Sfc_Versio.json

music/exemplars/formula_cards/UNMATCHED__25_Field_of_Sunset_full_Sfc_Versio.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__25_Field_of_Sunset_full_Sfc_Versio",
 "title": null,
 "game": null,
 "composer": null,
 "purpose_class": null,
 "source_path": "D:\\audio\\exemplars\\iTunes_Sweep\\Tales of Series SOUND TEAM & Bandai Namc\\Tales of Phantasia (Original Soundtrack)\\25 Field of Sunset(full) (Sfc Versio.m4a",
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 "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": "2026-08-07T12:43:14+00:00",
 "format_induced_limit": "lossy source (aac); high-band timbre figures carry codec artefacts and the card declares it",
 "control": {
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  "controls_total": 31,
  "ran_at": "2026-08-07T12:07:20+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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   "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.",
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    "peak_position_normalised": 0.5581
   }
  },
  "complexity_law": {
   "available": true,
   "bar_length_s": 1.2074,
   "bars": 72,
   "index_per_bar": [
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   "definition": "lane count + 4*harmonic change rate + 0.6*onset strength + 0.4*register span, per bar, normalised to the track's own maximum (section 11.6)",
   "step_map": [
    {
     "bar": 1,
     "at_s": 1.21,
     "delta": 0.638,
     "at_section_boundary": true
    },
    {
     "bar": 67,
     "at_s": 80.9,
     "delta": -0.526,
     "at_section_boundary": false
    },
    {
     "bar": 68,
     "at_s": 82.1,
     "delta": -0.225,
     "at_section_boundary": false
    }
   ],
   "steps_at_section_boundaries": 1,
   "steps_total": 3,
   "boundary_step_share": 0.333,
   "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": 0.103,
   "melodic_salience": 0.0,
   "voiced_fraction": 0.026,
   "note_count": 9,
   "mean_lanes": 7.727,
   "max_lanes": 9
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  "dynamics": {
   "dynamic_range_db_p95_minus_p10": 17.9,
   "peak_position_normalised": 0.4608,
   "peak_at_s": 40.356,
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   "arc_times_s": [
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  },
  "register": {
   "melody_span_semitones": 11.0,
   "melody_tessitura_midi": 41.0,
   "bass_floor_band": {
    "sub": 0.00277,
    "low_bass": 0.02041,
    "bass": 0.08009,
    "low_mid": 0.08476,
    "mid": 0.17989,
    "upper_mid": 0.40071,
    "presence": 0.18619,
    "brilliance": 0.04313,
    "air": 0.00202,
    "ultra": 0.0
   },
   "octave_band_profile": {
    "sub": 0.00277,
    "low_bass": 0.02041,
    "bass": 0.08009,
    "low_mid": 0.08476,
    "mid": 0.17989,
    "upper_mid": 0.40071,
    "presence": 0.18619,
    "brilliance": 0.04313,
    "air": 0.00202,
    "ultra": 0.0
   }
  },
  "cadence_and_ending": {
   "loop_seam": {
    "measurable": true,
    "seam_distance": 0.72682,
    "interior_distance_median": 0.00919,
    "seam_ratio": 79.053,
    "seam_clean": false,
    "tail_rms_over_mid": 0.0,
    "head_rms_over_mid": 0.0,
    "tail_rms_trend": -0.0931,
    "head_rms_trend": 0.9598,
    "baked_fade_out": false,
    "baked_fade_in": true
   },
   "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": 1747.9,
   "spectral_centroid_curve_hz": [
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    1326.0,
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    1594.0,
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    1803.7,
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   "spectral_rolloff85_hz_mean": 3114.4,
   "spectral_flatness_mean": 0.02162,
   "signature_colour": "warm"
  }
 }
}

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