Subject:Cepstrum computationFrom:"Argiris A. Kranidiotis" <akra(at)DI.UOA.GR>Date:Mon, 21 Jun 1999 19:59:55 +0300Dear all, I have a really simple question about the computation of the Cepstrum. The definition of the Cepstrum C(t) is: C(t)=|| FFT( log( ||FFT(x)|| ) ) || My question is: what happens when ||FFT(x)||=0 for some x? Then we have to compute log(0), which is undefined (as we all know). I suspect that I am missing something here, but this problem isn't mentioned anywhere in my books. (BTW: Does anyone know any kind of improvement of the original Cepstrum method in order have better pitch estimates?) Thanks in advance, Argiris A. Kranidiotis -- ____________________________ __________________________________ / /\ / /\ / Argiris A. Kranidiotis _/ /\ / University Of Athens _/ /\ / Doctoral student (Ph.D.) / \/ / Informatics Department / \/ / in Computer Science /\ / http://www.di.uoa.gr/~akra /\ /___________________________/ / /_________________________________/ / \___________________________\/ \_________________________________\/ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

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