music/exemplars/formula_cards/UNMATCHED__1-01_Presentiment.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__1-01_Presentiment",
"title": null,
"game": null,
"composer": null,
"purpose_class": null,
"source_path": "D:\\audio\\exemplars\\iTunes_Sweep\\Yasunori Mitsuda\\Chrono Trigger (Original Soundtrack) [DS\\1-01 Presentiment.m4a",
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"decoder": "ffmpeg.exe :: ffmpeg version 9.0-full_build-www.gyan.dev Copyright (c) 2000-2026 the FFmpeg developers",
"measured_at": "2026-08-07T12:59:46+00:00",
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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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{
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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,
20.81,
21.55,
22.29,
23.03,
23.78,
24.52,
25.26,
26.01,
26.75,
27.49,
28.24,
28.98,
29.72,
30.46,
31.21,
31.95,
32.69,
33.44,
34.18
],
"values": [
0.0072,
0.1127,
0.1266,
0.108,
0.1249,
0.1178,
0.1312,
0.1802,
0.1907,
0.2059,
0.2281,
0.2244,
0.23,
0.3022,
0.5223,
0.3487,
0.6212,
0.6783,
0.7974,
0.7869,
0.7921,
0.7979,
0.8119,
0.7451,
0.7697,
0.7749,
0.7772,
0.7816,
0.7798,
0.7718,
0.7544,
0.7255,
0.6403,
0.5589,
0.5028,
0.4164,
0.2797,
0.1856,
0.1482,
0.1305,
0.0991,
0.1394,
0.0991,
0.0924,
0.1562,
0.0,
0.0
],
"peak_position_normalised": 0.4634
}
},
"complexity_law": {
"available": true,
"bar_length_s": 1.6719,
"bars": 20,
"index_per_bar": [
0.101,
0.1468,
0.1563,
0.2243,
0.2496,
0.3226,
0.7324,
0.9749,
0.9891,
0.9867,
0.9934,
1.0,
0.9993,
0.9919,
0.9155,
0.757,
0.2926,
0.1451,
0.1007,
0.0125
],
"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": 6,
"at_s": 10.03,
"delta": 0.41,
"at_section_boundary": false
},
{
"bar": 7,
"at_s": 11.7,
"delta": 0.242,
"at_section_boundary": false
},
{
"bar": 15,
"at_s": 25.08,
"delta": -0.159,
"at_section_boundary": false
},
{
"bar": 16,
"at_s": 26.75,
"delta": -0.464,
"at_section_boundary": false
}
],
"steps_at_section_boundaries": 0,
"steps_total": 4,
"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": 2.021,
"melodic_salience": 0.798,
"voiced_fraction": 0.3502,
"note_count": 70,
"mean_lanes": 4.211,
"max_lanes": 9
},
"dynamics": {
"dynamic_range_db_p95_minus_p10": 44.34,
"peak_position_normalised": 0.4648,
"peak_at_s": 16.091,
"arc_curve_db": [
-71.15,
-91.32,
-39.42,
-42.39,
-39.99,
-32.74,
-30.49,
-26.85,
-25.1,
-24.04,
-21.38,
-20.57,
-19.07,
-17.38,
-16.26,
-14.54,
-12.2,
-8.95,
-7.7,
-7.82,
-7.64,
-7.6,
-7.32,
-7.72,
-8.19,
-7.68,
-7.69,
-7.59,
-7.57,
-7.92,
-8.32,
-9.16,
-10.28,
-12.31,
-15.32,
-18.7,
-22.44,
-25.11,
-27.69,
-29.66,
-30.21,
-32.27,
-36.07,
-52.02,
-102.51,
-168.96,
-160.0
],
"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,
20.81,
21.55,
22.29,
23.03,
23.78,
24.52,
25.26,
26.01,
26.75,
27.49,
28.24,
28.98,
29.72,
30.46,
31.21,
31.95,
32.69,
33.44,
34.18
]
},
"register": {
"melody_span_semitones": 43.33,
"melody_tessitura_midi": 88.0,
"bass_floor_band": {
"sub": 4e-05,
"low_bass": 0.00017,
"bass": 0.05649,
"low_mid": 0.06653,
"mid": 0.13915,
"upper_mid": 0.36938,
"presence": 0.30808,
"brilliance": 0.05479,
"air": 0.00534,
"ultra": 0.0
},
"octave_band_profile": {
"sub": 4e-05,
"low_bass": 0.00017,
"bass": 0.05649,
"low_mid": 0.06653,
"mid": 0.13915,
"upper_mid": 0.36938,
"presence": 0.30808,
"brilliance": 0.05479,
"air": 0.00534,
"ultra": 0.0
}
},
"cadence_and_ending": {
"loop_seam": {
"measurable": true,
"seam_distance": 1.0,
"interior_distance_median": 0.03727,
"seam_ratio": 26.833,
"seam_clean": false,
"tail_rms_over_mid": 0.0,
"head_rms_over_mid": 0.0,
"tail_rms_trend": 0.0,
"head_rms_trend": 0.0065,
"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": 1990.1,
"spectral_centroid_curve_hz": [
0.0,
2206.5,
2301.4,
1922.3,
2343.1,
1997.0,
2208.4,
2123.6,
2189.0,
2433.7,
1766.6,
2317.0,
2061.1,
2298.3,
1841.5,
1592.6,
1463.9,
1048.4,
2689.5,
2451.5,
2324.6,
2428.2,
2473.2,
2272.1,
2219.3,
2170.7,
2161.6,
2138.1,
2127.6,
2224.7,
2139.3,
2068.9,
1881.5,
1924.0,
1898.1,
1811.3,
2105.2,
2148.7,
1577.7,
2185.1,
1575.1,
1723.9,
1811.3,
1839.2,
3296.9,
0.0,
0.0
],
"spectral_rolloff85_hz_mean": 3391.8,
"spectral_flatness_mean": 0.06371,
"signature_colour": "warm"
}
}
}