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8kHz audio #54
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I have found the problem and quick solution. The aperiodicity spectrum is failed if extracted from 8kHz. The analysis-synthesis of 8kHz will still be working fine if the aperiodicity is extracted with 16kHz waveform, |
Issue 1:Hey @patrickltobing , thanks for the issue and the workaround. I confirmed it on my side, too. I'll consult the author of WORLD and get back to you. Workaround:
Issue 2:In addition to the issue you mentioned, I also found that DIO could sometimes yield suboptimal pitch contour with 16 kHz speech. In case you also have this issue use, Workaround _f0, t = pw.harvest(x, target_fs) # raw pitch extractor
f0 = pw.stonemask(x, _f0, t, target_fs) # pitch refinement
sp = pw.cheaptrick(x, f0, t, target_fs) # extract smoothed spectrogram
ap = pw.d4c(x, f0, t, target_fs) # extract aperiodicity |
Hi @JeremyCCHsu,
Could you successfully perform analysis-synthesis with WORLD on 8kHz audio?
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