A neat way to carry out normalised cross correlation on two singals

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Bran 2015-6-24

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https://ww2.mathworks.cn/matlabcentral/answers/225164-a-neat-way-to-carry-out-normalised-cross-correlation-on-two-singals

评论： Bran 2015-6-30

采纳的回答： Adam

0 down vote favorite Is there a neat a fast way of computing the normalised cross correlation of two signals in MATLAB?

My two signals X and Y when I tried C = normxcorr2(X,Y) and plotted C my results did not look as I would expect

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Answer 1

Adam 2015-6-24

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https://ww2.mathworks.cn/matlabcentral/answers/225164-a-neat-way-to-carry-out-normalised-cross-correlation-on-two-singals#answer_183859

在 MATLAB Online 中打开

doc xcorr

Look at the 'scaleopt' options. I think 'coeff' is the one you want.

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Bran 2015-6-30

Thank you very much in fact I have a follow on question - I am trying to determine the synchronicity between two oscillating signals. Which would be the better approach, to normalise the signals between 0 and 1 or to normalise the cross correlation? I dont really mind about the difference in amplitude but I would like to see synchronicity. Originally I thought to do cross correlation and look at the max of the graph however, I am not sure that this is the correct approach. I have also been looking at coherence of the spectra

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