pub const DUCK_TAIL_BINS: f64 = 3.0;Expand description
A duck takes at least this many bins, and DUCK_TAIL_WINDOWS more,
from half its depth back to a quarter of it. A read over a grid read of
none asks this many bins alone.
A gate comes back at once: at 128 BPM the median is 1 bin for a gate and 7 to 13 for a duck’s release of 80 ms or more.