pysptk.util.mcepalpha

pysptk.util.mcepalpha(fs, start=0.0, stop=1.0, step=0.001, num_points=1000)

Compute appropriate frequency warping parameter given a sampling frequency

It would be useful to determine alpha parameter in mel-cepstrum analysis.

The code is traslated from https://bitbucket.org/happyalu/mcep_alpha_calc.

Parameters:

fs : int

Sampling frequency

start : float

start value that will be passed to numpy.arange. Default is 0.0.

stop : float

stop value that will be passed to numpy.arange. Default is 1.0.

step : float

step value that will be passed to numpy.arange. Default is 0.001.

num_points : int

Number of points used in approximating mel-scale vectors in fixed- length.

Returns:

alpha : float

frequency warping paramter (offen denoted by alpha)