music/exemplars/formula_cards/UNMATCHED__50_Skyarrow_Bridge.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__50_Skyarrow_Bridge",
"title": null,
"game": null,
"composer": null,
"purpose_class": null,
"source_path": "D:\\audio\\exemplars\\iTunes_Sweep\\Compilations\\Pokémon Black & Pokémon White_ Super Mus\\50 Skyarrow Bridge.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": "2026-08-07T02:21:00+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": 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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"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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"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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"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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"segments": [
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"active_fraction": 0.9375,
"segments": [
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0.0562,
0.0158
],
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{
"bar": 1,
"at_s": 1.02,
"delta": 0.204,
"at_section_boundary": true
},
{
"bar": 75,
"at_s": 76.63,
"delta": -0.157,
"at_section_boundary": false
},
{
"bar": 76,
"at_s": 77.65,
"delta": -0.419,
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},
{
"bar": 77,
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"delta": -0.299,
"at_section_boundary": true
}
],
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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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"voiced_fraction": 0.3934,
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},
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1.49,
2.23,
2.97,
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5.94,
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16.35,
17.09,
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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,
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35.67,
36.41,
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38.64,
39.38,
40.12,
40.87,
41.61,
42.35,
43.1,
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44.58,
45.33,
46.07,
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47.55,
48.3,
49.04,
49.78,
50.53,
51.27,
52.01,
52.76,
53.5,
54.24,
54.98,
55.73,
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57.96,
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59.44,
60.19,
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61.67,
62.42,
63.16,
63.9,
64.64,
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68.36,
69.1,
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74.3,
75.05,
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76.53,
77.28,
78.02,
78.76,
79.51,
80.25,
80.99
]
},
"register": {
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"melody_tessitura_midi": 43.0,
"bass_floor_band": {
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"low_bass": 0.13237,
"bass": 0.30074,
"low_mid": 0.19069,
"mid": 0.20428,
"upper_mid": 0.07133,
"presence": 0.06362,
"brilliance": 0.01261,
"air": 0.00299,
"ultra": 0.0
},
"octave_band_profile": {
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"low_bass": 0.13237,
"bass": 0.30074,
"low_mid": 0.19069,
"mid": 0.20428,
"upper_mid": 0.07133,
"presence": 0.06362,
"brilliance": 0.01261,
"air": 0.00299,
"ultra": 0.0
}
},
"cadence_and_ending": {
"loop_seam": {
"measurable": true,
"seam_distance": 1.0,
"interior_distance_median": 0.06028,
"seam_ratio": 16.588,
"seam_clean": false,
"tail_rms_over_mid": 0.0,
"head_rms_over_mid": 0.0,
"tail_rms_trend": -0.8598,
"head_rms_trend": 0.2982,
"baked_fade_out": true,
"baked_fade_in": false
},
"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": {
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1545.5,
4084.6,
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2513.7,
2204.0,
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1740.8,
1682.6,
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2432.9,
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1226.1,
1170.5,
1881.5,
1351.4,
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1245.4,
1732.5,
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1778.8,
1842.5,
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1400.7,
1406.4,
2056.2,
2061.0,
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1364.5,
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1375.4,
2261.3,
673.6,
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2606.4,
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1978.0,
2670.2,
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2214.6,
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633.3,
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2000.4,
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"signature_colour": "warm"
}
}
}