music/exemplars/formula_cards/UNMATCHED__04_An_Adventure_Is_Beginning.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__04_An_Adventure_Is_Beginning",
"title": null,
"game": null,
"composer": null,
"purpose_class": null,
"source_path": "D:\\audio\\exemplars\\iTunes_Sweep\\Compilations\\Pokémon X & Pokémon Y_ Super Music Colle\\04 An Adventure Is Beginning.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": "2026-08-07T03:38:09+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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}
],
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"method": "checkerboard-kernel novelty over a chroma+MFCC self-similarity matrix"
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}
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{
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"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."
},
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"arc_times_s": [
0.0,
0.74,
1.49,
2.23,
2.97,
3.72,
4.46,
5.2,
5.94,
6.69,
7.43,
8.17,
8.92,
9.66,
10.4,
11.15,
11.89,
12.63,
13.37,
14.12,
14.86,
15.6,
16.35,
17.09,
17.83,
18.58,
19.32,
20.06
]
},
"register": {
"melody_span_semitones": 31.0,
"melody_tessitura_midi": 71.0,
"bass_floor_band": {
"sub": 2e-05,
"low_bass": 0.00663,
"bass": 0.01496,
"low_mid": 0.12694,
"mid": 0.35135,
"upper_mid": 0.35545,
"presence": 0.12685,
"brilliance": 0.01626,
"air": 0.00154,
"ultra": 0.0
},
"octave_band_profile": {
"sub": 2e-05,
"low_bass": 0.00663,
"bass": 0.01496,
"low_mid": 0.12694,
"mid": 0.35135,
"upper_mid": 0.35545,
"presence": 0.12685,
"brilliance": 0.01626,
"air": 0.00154,
"ultra": 0.0
}
},
"cadence_and_ending": {
"loop_seam": {
"measurable": true,
"seam_distance": 1.0,
"interior_distance_median": 0.03944,
"seam_ratio": 25.353,
"seam_clean": false,
"tail_rms_over_mid": 0.0,
"head_rms_over_mid": 0.0,
"tail_rms_trend": -0.8585,
"head_rms_trend": 0.4905,
"baked_fade_out": true,
"baked_fade_in": true
},
"ending": "baked_fade_out",
"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": 1536.0,
"spectral_centroid_curve_hz": [
0.0,
1354.7,
1570.6,
1420.8,
2181.0,
1711.2,
1745.2,
1510.4,
1425.6,
1769.5,
1712.7,
1291.1,
1510.3,
2279.2,
1645.3,
1551.7,
1586.3,
1419.5,
1639.2,
1369.3,
1675.4,
1560.4,
1425.4,
1307.0,
1279.0,
1004.5,
1154.6,
3653.5
],
"spectral_rolloff85_hz_mean": 2696.8,
"spectral_flatness_mean": 0.04911,
"signature_colour": "warm"
}
}
}