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Signal Processing

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  • $\begingroup$ I have added a new figure to my post. Am I right that the red points on the second figure represent the pitch marker? Is pitch marker a kind of markter that shows that borders of basic waveform? $\endgroup$ Commented Sep 13, 2013 at 10:22
  • $\begingroup$ In LP-PSOLA, pitch markers are chosen so that a/ the interval between them correspond to the estimated period of the signal; b/ they optimally coincide with maxima in the excitation signal (residual of LP analysis), which, according to the source-filter model, represents the contribution of the glottis. I don't think your test signal has been generated with a speech production model (harmonic comb sent into a bunch of narrow resonators), so the notion of peak in the excitation signal is a bit ill-defined here... $\endgroup$ Commented Sep 13, 2013 at 10:56
  • $\begingroup$ I changed the figure to a speech signal. I think I should read something about the human speech production. $\endgroup$ Commented Sep 13, 2013 at 11:54