acorr¶
- class diffsptk.AutocorrelationAnalysis(acr_order, frame_length, norm=False, acf='none')[source]¶
See this page for details. Currently, spectrum input is not supported.
- Parameters
- acr_orderint >= 0 [scalar]
Order of autocorrelation, \(M\).
- frame_lengthint > M [scalar]
Frame length, \(L\).
- normbool [scalar]
If true, normalize autocorrelation.
- acf[‘none’, ‘biased’, ‘unbiased’]
Type of autocorrelation function.
- forward(x)[source]¶
Estimate autocorrelation of input.
- Parameters
- xTensor [shape=(…, L)]
Framed waveform
- Returns
- rTensor [shape=(…, M+1)]
Autocorrelation.
Examples
>>> x = diffsptk.ramp(4) >>> acorr = diffsptk.AutocorrelationAnalysis(3, 5) >>> r = acorr(x) >>> r tensor([30.0000, 20.0000, 11.0000, 4.0000])