music/exemplars/formula_cards/UNMATCHED__15_Jet_Set_Groove_3.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__15_Jet_Set_Groove_3",
"title": null,
"game": null,
"composer": null,
"purpose_class": null,
"source_path": "D:\\audio\\exemplars\\iTunes_Sweep\\SEGA\\Jet Set Radio Future Sega (Original Trac\\15 Jet Set Groove #3.m4a",
"sha256": "bc50bbf02acb269aec94cbdf8342c4dff52b0c2e5f244de220cb948d62f2742c",
"bytes": 901108,
"source_format": "mov,mp4,m4a,3gp,3g2,mj2",
"source_codec": "aac",
"source_sample_rate_hz": 44100,
"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": "2026-08-07T05:37:04+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."
},
"card": {
"duration_and_structure": {
"total_length_s": 11.997,
"section_boundaries_s": [
0.0,
1.765,
9.938,
11.997
],
"section_count": 3,
"repeat_map": [
{
"section": 0,
"most_like_section": null,
"similarity": 0.0,
"is_repeat": false
},
{
"section": 1,
"most_like_section": 0,
"similarity": 0.9635,
"is_repeat": true
},
{
"section": 2,
"most_like_section": 0,
"similarity": 0.6308,
"is_repeat": false
}
],
"novelty_peak_strength": [
0.2865,
1.0
],
"method": "checkerboard-kernel novelty over a chroma+MFCC self-similarity matrix"
},
"tempo_and_time_grammar": {
"tempo_function": {
"baseline_bpm": 161.5,
"curve_times_s": [
0.0,
0.37,
0.74,
1.11,
1.49,
1.86,
2.23,
2.6,
2.97,
3.34,
3.72,
4.09,
4.46,
4.83,
5.2,
5.57,
5.94,
6.32,
6.69,
7.06,
7.43,
7.8,
8.17,
8.54,
8.92,
9.29,
9.66,
10.03,
10.4,
10.77,
11.15,
11.52,
11.89
],
"curve_bpm": [
258.4,
45.33,
45.33,
45.33,
45.33,
45.33,
99.38,
99.38,
99.38,
99.38,
172.27,
172.27,
83.35,
83.35,
83.35,
172.27,
172.27,
172.27,
172.27,
172.27,
172.27,
161.5,
161.5,
161.5,
161.5,
161.5,
234.91,
234.91,
234.91,
234.91,
287.11,
287.11,
287.11
],
"adjustment_events": [
{
"position_s": 0.0,
"duration_s": 6.04,
"delta_bpm": -59.63,
"shape": "ramp"
},
{
"position_s": 8.78,
"duration_s": 3.04,
"delta_bpm": 54.54,
"shape": "step"
}
],
"dispersion_bpm": 73.494,
"rubato_depth_bpm": 213.065
},
"global_bpm": 161.5,
"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": {
"tempo_bpm_global": 161.5,
"tempo_bpm_median_local": 123.05,
"tempo_iqr_bpm": 38.45,
"tempo_stability": 0.0,
"beat_interval_cv": 0.0514
},
"dominant_onset_period_s": 1.3235,
"dominant_onset_period_bpm": 45.33,
"metre": {
"assumed": "4/4",
"measured": null,
"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."
},
"groove": {
"swing_ratio": 0.559,
"onset_rate_per_s": 10.746
}
},
"tonality": {
"key": "G",
"mode": "major",
"windowed_key_agreement": 0.3333,
"modulation_note": "Windowed key agreement below ~0.7 is the modulation signal at rung 1; a pivot-chord map needs symbolic transcription (rung 2)."
},
"the_hook": {
"available": false,
"reason": "only 3 melodic notes extracted"
},
"motif_economy": {
"self_similarity_peak": 0.9007,
"self_similarity_baseline": 0.8151,
"self_similarity_lift": 0.0855,
"recurrence_lag_s": 0.464,
"interval_3gram_repetition": 0.0,
"interval_4gram_repetition": 0.0
},
"lane_analysis": {
"method": "spectral_band_proxy",
"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.",
"lane_roster_bands": [
"sub",
"low_bass",
"bass",
"low_mid",
"mid",
"upper_mid",
"presence",
"brilliance",
"air",
"ultra"
],
"entry_exit_map": [
{
"lane": "sub",
"band_hz": [
20,
45
],
"entry_s": 0.07,
"exit_s": 9.497,
"active_fraction": 0.6963,
"segments": [
[
0.07,
0.604
],
[
1.184,
1.927
],
[
2.159,
3.738
],
[
4.087,
5.689
],
[
6.014,
6.78
],
[
6.92,
9.497
]
]
},
{
"lane": "low_bass",
"band_hz": [
45,
90
],
"entry_s": 0.325,
"exit_s": 9.474,
"active_fraction": 0.764,
"segments": [
[
0.325,
9.474
]
]
},
{
"lane": "bass",
"band_hz": [
90,
180
],
"entry_s": 0.093,
"exit_s": 9.474,
"active_fraction": 0.7834,
"segments": [
[
0.093,
9.474
]
]
},
{
"lane": "low_mid",
"band_hz": [
180,
355
],
"entry_s": 0.093,
"exit_s": 8.777,
"active_fraction": 0.7253,
"segments": [
[
0.093,
8.777
]
]
},
{
"lane": "mid",
"band_hz": [
355,
710
],
"entry_s": 0.07,
"exit_s": 9.451,
"active_fraction": 0.7834,
"segments": [
[
0.07,
9.451
]
]
},
{
"lane": "upper_mid",
"band_hz": [
710,
1400
],
"entry_s": 0.093,
"exit_s": 8.615,
"active_fraction": 0.7118,
"segments": [
[
0.093,
8.615
]
]
},
{
"lane": "presence",
"band_hz": [
1400,
2800
],
"entry_s": 0.093,
"exit_s": 9.056,
"active_fraction": 0.7485,
"segments": [
[
0.093,
9.056
]
]
},
{
"lane": "brilliance",
"band_hz": [
2800,
5600
],
"entry_s": 0.093,
"exit_s": 9.102,
"active_fraction": 0.7524,
"segments": [
[
0.093,
9.102
]
]
},
{
"lane": "air",
"band_hz": [
5600,
11200
],
"entry_s": 0.116,
"exit_s": 8.707,
"active_fraction": 0.7176,
"segments": [
[
0.116,
8.707
]
]
}
],
"interlap_matrix": {
"sub|low_bass": 0.855,
"sub|bass": 0.8796,
"sub|low_mid": 0.8059,
"sub|mid": 0.8796,
"sub|upper_mid": 0.7887,
"sub|presence": 0.8354,
"sub|brilliance": 0.8403,
"sub|air": 0.7961,
"low_bass|bass": 0.9753,
"low_bass|low_mid": 0.9012,
"low_bass|mid": 0.9704,
"low_bass|upper_mid": 0.884,
"low_bass|presence": 0.9309,
"low_bass|brilliance": 0.9358,
"low_bass|air": 0.896,
"bass|low_mid": 0.9259,
"bass|mid": 0.9951,
"bass|upper_mid": 0.9086,
"bass|presence": 0.9556,
"bass|brilliance": 0.9605,
"bass|air": 0.916,
"low_mid|mid": 0.9259,
"low_mid|upper_mid": 0.9813,
"low_mid|presence": 0.969,
"low_mid|brilliance": 0.964,
"low_mid|air": 0.9893,
"mid|upper_mid": 0.9086,
"mid|presence": 0.9556,
"mid|brilliance": 0.9605,
"mid|air": 0.916,
"upper_mid|presence": 0.9509,
"upper_mid|brilliance": 0.946,
"upper_mid|air": 0.9866,
"presence|brilliance": 0.9949,
"presence|air": 0.9587,
"brilliance|air": 0.9537
},
"simultaneity_curve": {
"times_s": [
0.0,
0.186,
0.372,
0.557,
0.743,
0.929,
1.115,
1.3,
1.486,
1.672,
1.858,
2.043,
2.229,
2.415,
2.601,
2.786,
2.972,
3.158,
3.344,
3.529,
3.715,
3.901,
4.087,
4.272,
4.458,
4.644,
4.83,
5.016,
5.201,
5.387,
5.573,
5.759,
5.944,
6.13,
6.316,
6.502,
6.687,
6.873,
7.059,
7.245,
7.43,
7.616,
7.802,
7.988,
8.173,
8.359,
8.545,
8.731,
8.916,
9.102,
9.288,
9.474,
9.66,
9.845,
10.031,
10.217,
10.403,
10.588,
10.774,
10.96,
11.146,
11.331,
11.517,
11.703,
11.889
],
"lanes": [
0,
8,
9,
9,
9,
9,
9,
9,
9,
9,
9,
8,
9,
9,
9,
9,
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9,
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3,
0,
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0,
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0,
0,
0,
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],
"max": 9,
"mean": 6.683
},
"register_spacing_octaves": [
1.085,
1.0,
0.99,
0.99,
0.99,
0.99,
1.0,
1.0
]
},
"event_grammar": {
"drops": [
{
"position": 0.7026,
"at_s": 8.429,
"db_delta": -0.11,
"lanes_removed": 1.58,
"bars_held_s": 2.972,
"re_enters_at_s": 11.401
},
{
"position": 0.8032,
"at_s": 9.636,
"db_delta": -102.62,
"lanes_removed": 3.34,
"bars_held_s": 1.765,
"re_enters_at_s": 11.401
}
],
"raises": [
{
"position": 0.0503,
"start_s": 0.604,
"end_s": 8.963,
"db_delta": 8.06,
"lanes_added": 1.68,
"slope_db_per_s": 0.964
},
{
"position": 0.9484,
"start_s": 11.378,
"end_s": 11.401,
"db_delta": 8.88,
"lanes_added": 0.0,
"slope_db_per_s": 382.246
}
],
"breaks": [
{
"position": 0.8149,
"at_s": 9.776,
"duration_s": 2.206
}
],
"tuttis": [
{
"position": 0.0271,
"at_s": 0.325,
"duration_s": 1.602,
"lanes": 9
},
{
"position": 0.18,
"at_s": 2.159,
"duration_s": 1.579,
"lanes": 9
},
{
"position": 0.3407,
"at_s": 4.087,
"duration_s": 1.602,
"lanes": 9
},
{
"position": 0.5013,
"at_s": 6.014,
"duration_s": 2.577,
"lanes": 9
}
],
"silence_budget": {
"fraction": 0.1896,
"seconds": 2.274,
"threshold": "40 dB below the track's own p95 RMS",
"note": "Section 11.2 treats rest as a FIRST-CLASS parameter, not an absence."
},
"counts": {
"drops": 2,
"raises": 2,
"breaks": 1,
"tuttis": 4
}
},
"opening_and_flow_law": {
"onset_type": "fade_in",
"first_sound_at_s": 0.07,
"time_to_hook_s": null,
"time_to_hook_bars": null,
"time_to_full_texture_s": 0.325,
"time_to_full_texture_bars": 0.22,
"flow_curve": {
"definition": "energy = 0.45*density + 0.35*lane-simultaneity + 0.20*register, each normalised to the track's own maximum (section 11.4)",
"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
],
"values": [
0.1161,
0.7149,
0.7748,
0.7828,
0.7978,
0.8294,
0.7983,
0.801,
0.7556,
0.7305,
0.7835,
0.7675,
0.5418,
0.158,
0.0133,
0.0,
0.0
],
"peak_position_normalised": 0.2829
}
},
"complexity_law": {
"available": true,
"bar_length_s": 1.4861,
"bars": 8,
"index_per_bar": [
0.9762,
0.989,
0.983,
0.9947,
1.0,
0.9499,
0.3274,
0.0193
],
"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": 8.92,
"delta": -0.622,
"at_section_boundary": true
},
{
"bar": 7,
"at_s": 10.4,
"delta": -0.308,
"at_section_boundary": true
}
],
"steps_at_section_boundaries": 2,
"steps_total": 2,
"boundary_step_share": 1.0,
"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": 0.25,
"melodic_salience": 0.1308,
"voiced_fraction": 0.148,
"note_count": 3,
"mean_lanes": 6.683,
"max_lanes": 9
},
"dynamics": {
"dynamic_range_db_p95_minus_p10": 192.33,
"peak_position_normalised": 0.3721,
"peak_at_s": 4.458,
"arc_curve_db": [
-12.21,
-18.39,
-11.88,
-9.86,
-9.21,
-9.37,
-8.86,
-9.76,
-10.42,
-11.11,
-10.92,
-9.78,
-13.31,
-79.57,
-170.19,
-200.0,
-113.85
],
"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
]
},
"register": {
"melody_span_semitones": 7.0,
"melody_tessitura_midi": 49.0,
"bass_floor_band": {
"sub": 0.02076,
"low_bass": 0.11121,
"bass": 0.41613,
"low_mid": 0.10633,
"mid": 0.04339,
"upper_mid": 0.06455,
"presence": 0.0902,
"brilliance": 0.12063,
"air": 0.02476,
"ultra": 0.0
},
"octave_band_profile": {
"sub": 0.02076,
"low_bass": 0.11121,
"bass": 0.41613,
"low_mid": 0.10633,
"mid": 0.04339,
"upper_mid": 0.06455,
"presence": 0.0902,
"brilliance": 0.12063,
"air": 0.02476,
"ultra": 0.0
}
},
"cadence_and_ending": {
"loop_seam": {
"measurable": true,
"seam_distance": 1.0,
"interior_distance_median": 0.03138,
"seam_ratio": 31.862,
"seam_clean": false,
"tail_rms_over_mid": 0.0,
"head_rms_over_mid": 0.7884,
"tail_rms_trend": 0.0,
"head_rms_trend": 0.0888,
"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": 2274.9,
"spectral_centroid_curve_hz": [
0.0,
3495.2,
3530.3,
2766.6,
2828.1,
3222.3,
2567.4,
2649.8,
3299.9,
2237.9,
3260.2,
2510.5,
1513.4,
716.4,
0.0,
0.0,
0.0
],
"spectral_rolloff85_hz_mean": 4506.4,
"spectral_flatness_mean": 0.2253,
"signature_colour": "warm"
}
}
}