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Show pitch of wave file (FFT/Autocorrelation)
Submitted by gnjunge on Sun, 06/04/2006 - 10:49.
Hi,
I want to show a Pitch graph/curve of a wave file (which I get after the MS SAPI 5.1 recognizes the user Result.Audio(0,-1)). I saw that good results can be made by using AutoCorrelation. I have the autocorrelation function and I also have the FFT function, but I don't know what I should put into the autocorrelation function in order to get a pitch line.
I have a wave file (spoken text), and also have the FFT results of the wave file, how can I extract from this data a nice Pitch curve. The purpose of the pitch line is to show the intonations/pitch changes of the spoken text.
If anybody could explain to me the steps to be taken in plain english, pseudo code, or C#, VB(.NET) or Java, I would be very
very thankfull.
Many Thanks,
Gidon
