music/exemplars/formula_cards/UNMATCHED__Portal2-04-Machiavellian_Bach.json
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"adjustment_events": [
{
"position_s": 0.0,
"duration_s": 7.24,
"delta_bpm": -122.1,
"shape": "ramp"
},
{
"position_s": 20.74,
"duration_s": 2.09,
"delta_bpm": -22.6,
"shape": "step"
},
{
"position_s": 28.19,
"duration_s": 4.78,
"delta_bpm": -75.76,
"shape": "step"
},
{
"position_s": 62.37,
"duration_s": 3.51,
"delta_bpm": -78.8,
"shape": "step"
},
{
"position_s": 72.1,
"duration_s": 6.01,
"delta_bpm": -83.67,
"shape": "step"
},
{
"position_s": 115.71,
"duration_s": 3.09,
"delta_bpm": -52.05,
"shape": "step"
},
{
"position_s": 168.55,
"duration_s": 3.39,
"delta_bpm": -41.18,
"shape": "step"
}
],
"dispersion_bpm": 33.912,
"rubato_depth_bpm": 0.0
},
"global_bpm": 117.45,
"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": 117.45,
"tempo_bpm_median_local": 117.45,
"tempo_iqr_bpm": 0.0,
"tempo_stability": 1.0,
"beat_interval_cv": 0.0232
},
"dominant_onset_period_s": 0.9985,
"dominant_onset_period_bpm": 60.09,
"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": 0.496,
"onset_rate_per_s": 10.768
}
},
"tonality": {
"key": "F",
"mode": "minor",
"windowed_key_agreement": 0.3443,
"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": true,
"onset_s": 0.104,
"onset_bars": 0.1,
"pitch_contour": "DU-DUDUUDD-UUDD",
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],
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1.0,
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23.0,
5.0,
-16.0,
-3.0
],
"range_semitones": 28.0,
"distinctive_deviation": {
"largest_interval_semitones": 23.0,
"at_note_index": 12,
"is_licensed_leap": true
}
},
"motif_economy": {
"self_similarity_peak": 0.9003,
"self_similarity_baseline": 0.7941,
"self_similarity_lift": 0.1061,
"recurrence_lag_s": 120.001,
"interval_3gram_repetition": 0.1124,
"interval_4gram_repetition": 0.0389
},
"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.",
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},
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"seam_distance": 1.0,
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"seam_ratio": 21.909,
"seam_clean": false,
"tail_rms_over_mid": 0.0,
"head_rms_over_mid": 0.6271,
"tail_rms_trend": -0.271,
"head_rms_trend": -0.0654,
"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."
},
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2244.5,
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1266.9,
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1401.7,
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1560.7,
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2028.7,
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2175.2,
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"signature_colour": "warm"
}
}
}