gnorm#

class diffsptk.GeneralizedCepstrumGainNormalization(cep_order, gamma=0, c=None)[source]#

See this page for details.

Parameters:

cep_orderint >= 0: Order of cepstrum, $M$ .
gammafloat in [-1, 1]: Gamma, $γ$ .
cint >= 1 or None: Number of stages.

forward(x)[source]#

Perform cepstrum gain normalization.

Parameters:

xTensor [shape=(…, M+1)]: Generalized cepstrum.

Returns:

outTensor [shape=(…, M+1)]: Normalized generalized cepstrum.

Examples

>>> x = diffsptk.ramp(1, 4)
>>> gnorm = diffsptk.GeneralizedCepstrumGainNormalization(3, c=2)
>>> y = gnorm(x)
>>> y
tensor([2.2500, 1.3333, 2.0000, 2.6667])

diffsptk.functional.gnorm(x, gamma=0, c=None)[source]#

Perform cepstrum gain normalization.

Parameters:

xTensor [shape=(…, M+1)]: Generalized cepstrum.
gammafloat in [-1, 1]: Gamma, $γ$ .
cint >= 1 or None: Number of stages.

Returns:

outTensor [shape=(…, M+1)]: Normalized generalized cepstrum.