pub fn band_envelope(
samples: &[f64],
rate: SampleRate,
lo: Hz,
hi: Hz,
) -> Result<Track, FilterError>Expand description
The envelope of one band at 200 Hz: band_magnitude, then the mean
of each 5 ms block.
ยงErrors
Returns a FilterError for an edge at 0 Hz or at or above the
Nyquist frequency, or hi not above lo.