music/exemplars/formula_cards/UNMATCHED__88_Surf.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__88_Surf",
"title": null,
"game": null,
"composer": null,
"purpose_class": null,
"source_path": "D:\\audio\\exemplars\\iTunes_Sweep\\Compilations\\Pokémon Diamond & Pokémon Pearl_ Super M\\88 Surf.m4a",
"sha256": "729b3fef9ad5b71376e99ee042b2a36d4a5ca9b8af9f7836f8fc01c21e05247d",
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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": "2026-08-07T03:33:40+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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"duration_s": 10.75,
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"shape": "step"
}
],
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},
"global_bpm": 123.05,
"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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}
},
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"modulation_note": "Windowed key agreement below ~0.7 is the modulation signal at rung 1; a pivot-chord map needs symbolic transcription (rung 2)."
},
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}
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"confidence": "LOW-FOR-ROSTER, USABLE-FOR-ARRANGEMENT",
"method_note": "Section 11.1 requires the lane method be declared. Bands are not instruments: two instruments in one octave read as one lane, and one instrument spanning two octaves reads as two. Entry/exit and simultaneity shapes are trustworthy; a roster is not claimed.",
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]
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50.782,
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]
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0.4582,
0.3755,
0.2633,
0.2357,
0.2389,
0.1364,
0.0489,
0.058
],
"peak_position_normalised": 0.8932
}
},
"complexity_law": {
"available": true,
"bar_length_s": 1.9504,
"bars": 45,
"index_per_bar": [
0.6844,
0.7525,
0.7629,
0.9945,
0.9519,
0.9356,
0.9906,
0.9564,
0.9086,
0.9767,
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0.9934,
0.8669,
0.9887,
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0.7126,
0.7414,
0.8307,
0.8251,
0.8209,
0.9186,
0.9104,
0.9179,
0.9761,
1.0,
0.895,
0.9363,
0.9382,
0.8525,
0.8565,
0.8515,
0.9283,
0.8944,
0.8469,
0.8459,
0.9832,
0.9356,
0.7851,
0.4326,
0.0412
],
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"step_map": [
{
"bar": 3,
"at_s": 5.85,
"delta": 0.232,
"at_section_boundary": true
},
{
"bar": 16,
"at_s": 31.21,
"delta": -0.234,
"at_section_boundary": false
},
{
"bar": 42,
"at_s": 81.92,
"delta": -0.15,
"at_section_boundary": true
},
{
"bar": 43,
"at_s": 83.87,
"delta": -0.352,
"at_section_boundary": true
},
{
"bar": 44,
"at_s": 85.82,
"delta": -0.391,
"at_section_boundary": false
}
],
"steps_at_section_boundaries": 3,
"steps_total": 5,
"boundary_step_share": 0.6,
"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": 2.872,
"melodic_salience": 0.8691,
"voiced_fraction": 0.5842,
"note_count": 253,
"mean_lanes": 6.507,
"max_lanes": 9
},
"dynamics": {
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],
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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,
34.92,
35.67,
36.41,
37.15,
37.89,
38.64,
39.38,
40.12,
40.87,
41.61,
42.35,
43.1,
43.84,
44.58,
45.33,
46.07,
46.81,
47.55,
48.3,
49.04,
49.78,
50.53,
51.27,
52.01,
52.76,
53.5,
54.24,
54.98,
55.73,
56.47,
57.21,
57.96,
58.7,
59.44,
60.19,
60.93,
61.67,
62.42,
63.16,
63.9,
64.64,
65.39,
66.13,
66.87,
67.62,
68.36,
69.1,
69.85,
70.59,
71.33,
72.07,
72.82,
73.56,
74.3,
75.05,
75.79,
76.53,
77.28,
78.02,
78.76,
79.51,
80.25,
80.99,
81.73,
82.48,
83.22,
83.96,
84.71,
85.45,
86.19,
86.94,
87.68
]
},
"register": {
"melody_span_semitones": 36.0,
"melody_tessitura_midi": 52.0,
"bass_floor_band": {
"sub": 0.00038,
"low_bass": 0.07174,
"bass": 0.19095,
"low_mid": 0.21605,
"mid": 0.23976,
"upper_mid": 0.18622,
"presence": 0.06879,
"brilliance": 0.02006,
"air": 0.00524,
"ultra": 0.0
},
"octave_band_profile": {
"sub": 0.00038,
"low_bass": 0.07174,
"bass": 0.19095,
"low_mid": 0.21605,
"mid": 0.23976,
"upper_mid": 0.18622,
"presence": 0.06879,
"brilliance": 0.02006,
"air": 0.00524,
"ultra": 0.0
}
},
"cadence_and_ending": {
"loop_seam": {
"measurable": true,
"seam_distance": 0.11511,
"interior_distance_median": 0.04388,
"seam_ratio": 2.623,
"seam_clean": false,
"tail_rms_over_mid": 0.0003,
"head_rms_over_mid": 0.0,
"tail_rms_trend": -0.8553,
"head_rms_trend": 0.6861,
"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": 1999.4,
"spectral_centroid_curve_hz": [
1682.5,
602.7,
639.8,
2146.6,
2447.6,
598.4,
954.9,
2665.4,
2384.3,
1339.5,
2107.4,
2630.3,
2838.2,
1492.8,
1664.3,
2074.6,
1813.4,
1085.5,
2637.9,
2332.2,
2230.5,
1649.6,
2979.9,
2642.7,
1943.6,
1366.3,
2409.4,
2837.7,
1785.8,
1343.2,
2250.0,
1965.2,
1851.6,
1616.3,
2081.7,
2305.4,
1651.7,
1948.9,
2177.9,
2701.6,
1632.1,
1730.9,
1620.0,
1802.4,
2211.0,
2340.1,
2345.9,
2147.8,
1969.3,
1763.7,
2101.2,
1957.1,
2333.0,
1882.9,
2066.7,
2129.8,
2570.7,
1806.6,
1622.0,
1986.3,
1946.5,
2320.4,
1808.4,
1829.3,
2067.6,
2182.6,
2151.9,
1793.0,
1726.3,
1637.3,
1859.3,
2026.2,
2455.5,
2263.3,
2270.4,
2420.9,
2049.1,
2268.6,
2057.2,
2302.4,
1965.3,
2117.0,
2084.6,
2232.2,
2838.3,
2347.1,
2444.5,
2133.9,
2646.9,
1950.1,
1879.9,
1828.5,
1925.3,
1856.9,
1909.6,
2242.0,
1851.6,
2260.4,
2030.4,
1828.6,
2462.1,
2101.4,
1981.4,
2068.6,
2142.3,
2230.1,
1615.6,
1978.0,
2638.3,
2646.7,
1478.6,
960.1,
1971.7,
1562.6,
675.0,
3549.7,
2285.7,
844.0,
1041.3
],
"spectral_rolloff85_hz_mean": 4303.5,
"spectral_flatness_mean": 0.00918,
"signature_colour": "warm"
}
}
}