c2mpir#

class diffsptk.CepstrumToMinimumPhaseImpulseResponse(cep_order, impulse_response_length)[source]#

See this page for details. This module may be slow due to recursive computation.

Parameters

cep_orderint >= 0 [scalar]: Order of cepstrum, \(M\).
impulse_response_lengthint >= 1 [scalar]: Length of impulse response, \(N\).

forward(c)[source]#

Convert cepstrum to impulse response.

Parameters

cTensor [shape=(…, M+1)]: Cepstral coefficients.

Returns

hTensor [shape=(…, N)]: Truncated impulse response.

Examples

>>> c = diffsptk.ramp(3)
>>> c2mpir = diffsptk.CepstrumToMinimumPhaseImpulseResponse(3, 5)
>>> h = c2mpir(c)
>>> h
tensor([1.0000, 1.0000, 2.5000, 5.1667, 6.0417])