Autocorrelation and Alignment
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I have a speech signal with 18000 samples. Call this the original signal. Also, I have the same speech signal with a time delay. Now, the task I need to achieve is to auto correlate the signals and align the signal to the original signal time index.
Can you please help me with it. Thank you.
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Abhishek Gupte
2011 年 12 月 16 日
1. Use XCORR in the Signal Processing Toolbox to find the correlation between the two signals;
2. Find the index of the max value of the correlation output - n;
3. If L is the length of the two signals, the delay between the two signals is abs( n-L ).
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