pysptk.sptk.acep

pysptk.sptk.acep(x, c, lambda_coef=0.98, step=0.1, tau=0.9, pd=4, eps=1e-06)[source]

Adaptive cepstral analysis

Parameters
xdouble

A input sample

carray, shape(order + 1)

Cepstrum. The result is stored in place.

lambda_coeffloat, optional

Leakage factor. Default is 0.98.

stepfloat, optional

Step size. Default is 0.1.

taufloat, optional

Momentum constant. Default is 0.9.

pdint, optional

Order of pade approximation. Default is 4.

epsfloat, optional

Minimum value for epsilon. Default is 1.0e-6.

Returns
prederrfloat

Prediction error

Raises
ValueError

if invalid order of pade approximation is specified