music/exemplars/formula_cards/UNMATCHED__Portal2-23-You_Saved_Science.json
{
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"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__Portal2-23-You_Saved_Science",
"title": null,
"game": null,
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"decoder": "ffmpeg.exe :: ffmpeg version 9.0-full_build-www.gyan.dev Copyright (c) 2000-2026 the FFmpeg developers",
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"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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0,
0,
0,
0,
0,
0,
0,
0,
0,
0
],
"max": 9,
"mean": 6.769
},
"register_spacing_octaves": [
1.085,
1.0,
0.99,
0.99,
0.99,
0.99,
1.0,
1.0
]
},
"event_grammar": {
"drops": [
{
"position": 0.0818,
"at_s": 3.924,
"db_delta": -6.16,
"lanes_removed": 1.09,
"bars_held_s": 1.347,
"re_enters_at_s": 5.271
},
{
"position": 0.6483,
"at_s": 31.092,
"db_delta": -6.15,
"lanes_removed": 1.22,
"bars_held_s": 16.277,
"re_enters_at_s": 47.369
},
{
"position": 0.9542,
"at_s": 45.767,
"db_delta": -6.21,
"lanes_removed": 0.0,
"bars_held_s": 1.602,
"re_enters_at_s": 47.369
}
],
"raises": [
{
"position": 0.0126,
"start_s": 0.604,
"end_s": 4.296,
"db_delta": 13.36,
"lanes_added": 3.34,
"slope_db_per_s": 3.619
},
{
"position": 0.1104,
"start_s": 5.294,
"end_s": 11.912,
"db_delta": 6.22,
"lanes_added": 1.28,
"slope_db_per_s": 0.94
},
{
"position": 0.382,
"start_s": 18.321,
"end_s": 35.248,
"db_delta": 0.53,
"lanes_added": 1.58,
"slope_db_per_s": 0.032
},
{
"position": 0.6734,
"start_s": 32.299,
"end_s": 33.135,
"db_delta": 2.85,
"lanes_added": 2.08,
"slope_db_per_s": 3.409
}
],
"breaks": [
{
"position": 0.9484,
"at_s": 45.488,
"duration_s": 2.461
}
],
"tuttis": [
{
"position": 0.0121,
"at_s": 0.58,
"duration_s": 1.741,
"lanes": 9
},
{
"position": 0.0547,
"at_s": 2.624,
"duration_s": 1.44,
"lanes": 9
},
{
"position": 0.1617,
"at_s": 7.755,
"duration_s": 3.808,
"lanes": 9
},
{
"position": 0.4749,
"at_s": 22.779,
"duration_s": 1.3,
"lanes": 9
},
{
"position": 0.6725,
"at_s": 32.253,
"duration_s": 0.998,
"lanes": 9
}
],
"silence_budget": {
"fraction": 0.0552,
"seconds": 2.646,
"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": 3,
"raises": 4,
"breaks": 1,
"tuttis": 5
}
},
"opening_and_flow_law": {
"onset_type": "fade_in",
"first_sound_at_s": 0.186,
"time_to_hook_s": 0.569,
"time_to_hook_bars": 0.36,
"time_to_full_texture_s": 0.58,
"time_to_full_texture_bars": 0.37,
"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,
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
],
"values": [
0.2227,
0.4857,
0.5341,
0.5686,
0.5959,
0.5672,
0.5017,
0.5056,
0.5734,
0.6023,
0.5673,
0.645,
0.6765,
0.6883,
0.6917,
0.6466,
0.545,
0.4513,
0.4311,
0.4191,
0.4329,
0.4363,
0.3997,
0.3882,
0.3475,
0.4264,
0.5134,
0.5099,
0.5459,
0.5372,
0.4845,
0.5232,
0.544,
0.5325,
0.5714,
0.6081,
0.5734,
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0.5734,
0.5371,
0.5229,
0.5142,
0.4417,
0.3947,
0.4907,
0.4784,
0.4555,
0.4514,
0.4095,
0.4059,
0.4027,
0.4081,
0.373,
0.3386,
0.2963,
0.2918,
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0.2042,
0.1983,
0.2045,
0.1641,
0.1256,
0.1203,
0.0693,
0.0698
],
"peak_position_normalised": 0.2097
}
},
"complexity_law": {
"available": true,
"bar_length_s": 1.5789,
"bars": 30,
"index_per_bar": [
0.9174,
0.9852,
0.9623,
0.9312,
0.9653,
1.0,
0.9994,
0.9439,
0.7854,
0.7817,
0.733,
0.76,
0.9287,
0.9202,
0.9501,
0.9714,
0.9417,
0.9562,
0.9229,
0.8626,
0.918,
0.9229,
0.8805,
0.7894,
0.7234,
0.5277,
0.3793,
0.2715,
0.168,
0.037
],
"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": 8,
"at_s": 12.63,
"delta": -0.158,
"at_section_boundary": true
},
{
"bar": 12,
"at_s": 18.95,
"delta": 0.169,
"at_section_boundary": false
},
{
"bar": 25,
"at_s": 39.47,
"delta": -0.196,
"at_section_boundary": false
}
],
"steps_at_section_boundaries": 1,
"steps_total": 3,
"boundary_step_share": 0.333,
"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": 2.294,
"melodic_salience": 0.7566,
"voiced_fraction": 0.5053,
"note_count": 110,
"mean_lanes": 6.769,
"max_lanes": 9
},
"dynamics": {
"dynamic_range_db_p95_minus_p10": 32.11,
"peak_position_normalised": 0.2155,
"peak_at_s": 10.333,
"arc_curve_db": [
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-31.97,
-22.91,
-20.0,
-17.24,
-18.87,
-24.26,
-24.4,
-18.72,
-18.16,
-18.55,
-15.48,
-14.4,
-13.9,
-13.67,
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-20.32,
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-25.89,
-26.34,
-27.97,
-29.69,
-30.91,
-29.95,
-24.93,
-20.28,
-18.49,
-18.48,
-21.51,
-22.89,
-21.56,
-19.84,
-17.44,
-16.93,
-17.43,
-18.29,
-18.79,
-19.28,
-20.17,
-20.66,
-24.94,
-28.41,
-27.13,
-27.08,
-27.99,
-29.44,
-31.93,
-33.55,
-34.93,
-36.31,
-36.44,
-35.95,
-37.41,
-40.2,
-41.98,
-43.65,
-45.9,
-47.69,
-50.29,
-54.21,
-62.18,
-70.64,
-57.64
],
"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,
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
]
},
"register": {
"melody_span_semitones": 16.0,
"melody_tessitura_midi": 74.0,
"bass_floor_band": {
"sub": 0.0,
"low_bass": 0.0,
"bass": 0.0,
"low_mid": 0.00105,
"mid": 0.22314,
"upper_mid": 0.70007,
"presence": 0.06342,
"brilliance": 0.01162,
"air": 0.00031,
"ultra": 0.0
},
"octave_band_profile": {
"sub": 0.0,
"low_bass": 0.0,
"bass": 0.0,
"low_mid": 0.00105,
"mid": 0.22314,
"upper_mid": 0.70007,
"presence": 0.06342,
"brilliance": 0.01162,
"air": 0.00031,
"ultra": 0.0
}
},
"cadence_and_ending": {
"loop_seam": {
"measurable": true,
"seam_distance": 0.80907,
"interior_distance_median": 0.0295,
"seam_ratio": 27.427,
"seam_clean": false,
"tail_rms_over_mid": 0.0018,
"head_rms_over_mid": 0.1006,
"tail_rms_trend": -0.8725,
"head_rms_trend": 0.9222,
"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": 2058.1,
"spectral_centroid_curve_hz": [
4690.9,
1851.0,
1944.3,
1704.4,
1464.6,
1351.3,
1993.2,
2008.5,
1624.1,
1707.9,
1548.5,
1577.8,
1491.9,
1556.7,
1507.8,
1613.2,
1758.4,
1982.2,
2159.5,
1934.5,
2166.7,
2298.2,
2568.4,
2530.7,
2636.2,
2436.6,
1838.5,
1558.5,
1552.1,
1496.6,
1909.4,
1616.7,
1865.2,
1713.3,
1690.7,
1455.7,
1709.5,
1567.8,
1575.8,
1741.3,
1676.5,
1747.4,
1803.4,
2227.6,
1940.1,
2433.4,
2085.6,
2156.8,
2391.4,
2449.6,
2470.7,
2673.8,
2778.3,
2883.5,
2864.2,
2857.7,
2596.1,
2748.2,
2657.1,
2840.0,
2835.5,
2880.4,
2787.9,
1611.2,
1633.5
],
"spectral_rolloff85_hz_mean": 3495.9,
"spectral_flatness_mean": 0.00426,
"signature_colour": "warm"
}
}
}