lar2par#

class diffsptk.LogAreaRatioToParcorCoefficients(par_order)[source]#

See this page for details.

Parameters:

par_orderint >= 0 [scalar]: Order of PARCOR, \(M\).

forward(A)[source]#

Convert LAR to PARCOR.

Parameters:

ATensor [shape=(…, M+1)]: Log area ratio.

Returns:

kTensor [shape=(…, M+1)]: PARCOR coefficients.

Examples

>>> k = diffsptk.ramp(1, 4) * 0.1
>>> par2lar = diffsptk.ParcorCoefficientsToLogAreaRatio(3)
>>> A = par2lar(k)
>>> A
tensor([0.1000, 0.4055, 0.6190, 0.8473])