music/exemplars/formula_cards/UNMATCHED__12_Raising_a_Curtain_Sfc_Version_.json
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"adjustment_events": [
{
"position_s": 55.61,
"duration_s": 3.04,
"delta_bpm": 47.04,
"shape": "step"
},
{
"position_s": 179.35,
"duration_s": 2.86,
"delta_bpm": 42.49,
"shape": "step"
},
{
"position_s": 252.66,
"duration_s": 4.34,
"delta_bpm": 68.01,
"shape": "step"
}
],
"dispersion_bpm": 17.826,
"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": 0.0186
},
"dominant_onset_period_s": 3.0883,
"dominant_onset_period_bpm": 19.43,
"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": 0.625,
"onset_rate_per_s": 10.766
}
},
"tonality": {
"key": "A",
"mode": "minor",
"windowed_key_agreement": 0.3077,
"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": 0.662,
"onset_bars": 0.32,
"pitch_contour": "-DUU--DUU-----D",
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],
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-10.0
],
"range_semitones": 10.0,
"distinctive_deviation": {
"largest_interval_semitones": -10.0,
"at_note_index": 15,
"is_licensed_leap": true
}
},
"motif_economy": {
"self_similarity_peak": 0.9881,
"self_similarity_baseline": 0.7319,
"self_similarity_lift": 0.2562,
"recurrence_lag_s": 123.53,
"interval_3gram_repetition": 0.4397,
"interval_4gram_repetition": 0.2957
},
"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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"upper_mid",
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},
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},
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},
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},
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"baked_fade_in": true
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"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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