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{
"position_s": 98.73,
"duration_s": 2.72,
"delta_bpm": 38.68,
"shape": "step"
},
{
"position_s": 157.64,
"duration_s": 2.95,
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"shape": "step"
},
{
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},
{
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"shape": "step"
},
{
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},
{
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},
{
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},
{
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"shape": "step"
},
{
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"shape": "step"
},
{
"position_s": 250.98,
"duration_s": 15.09,
"delta_bpm": 93.59,
"shape": "step"
}
],
"dispersion_bpm": 54.372,
"rubato_depth_bpm": 117.454
},
"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,
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},
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"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."
},
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"onset_rate_per_s": 10.766
}
},
"tonality": {
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"mode": "major",
"windowed_key_agreement": 0.1791,
"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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