pub const SPARSE_PERIODICITY_MIN: f64 = 0.75;Expand description
The lowest share of the onset strength that repeats every 2 or every 4 refined beats, for a part whose beat periodicity is too low.
One onset a bar repeats on a quarter of the beat lags, so its beat
periodicity reads near 0.25. Read on every second or fourth lag alone,
it reads near 1. Those lags are fewer and line up by chance more
often: a drum part whose --bpm is 3.5 % off reads 0.47 at a tempo
16/15 of the truth, where every eighth beat meets an eighth note. A
tempo ramp of 1 % reads 0.62 at most, and generated parts with one kick
a bar or every other beat read 0.875 or more; the threshold sits
between them.