pub const EXTENT_SHARE: [(f64, f64); 9];Expand description
The raw extent the f0 track reads, as a share of the true extent, by rate.
Measured on one generated 1 s mono saw at 220 Hz with ±35 cents per rate, through the transcriber’s notes and the track. The track’s frame of 93 ms smooths a fast swing, so the share falls with the rate. Between the rates the share is interpolated linearly; outside them it holds the end value.