Function bliss_audio_aubio_rs::hz_to_mel_htk [−][src]
pub fn hz_to_mel_htk(freq: Smpl) -> Smpl
Expand description
Convert frequency (Hz) to mel
freq
Input frequency to convert, in Hz
Converts a scalar from the frequency domain to the mel scale, using the equation defined by O’Shaughnessy, as implemented in the HTK speech recognition toolkit:
m = 1127 + ln(1 + f / 700)
See also mel_to_hz_htk()
, hz_to_mel()
.
See:
- Douglas O’Shaughnessy (1987). Speech communication: human and machine. Addison-Wesley. p. 150. ISBN 978-0-201-16520-3.
- HTK Speech Recognition Toolkit: http://htk.eng.cam.ac.uk/