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i hav a speech signal which contains noise. sampling frequency 8000Hz
how can i perform the autocorrelation of this signal with the delay of 100 samples?
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Do you have the Signal Processing Toolbox? If so, you can use xcorr()
I'll give you an example
[xc,lags] = xcorr(mtlb,100,'coef');
xc above is 201 samples long with the autocorrelation out to lags of +/- 100 (plus 0)
You can just extract the positive lags with