interpretation of cross correlation between 2 signals?

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Mohammed Lamine Mekhalfia
回答： DEBOLEENA SADHUKHAN 2023-3-6
Dear Matlab users,
in my way to seek the uncertainty level between two signals.
I performed a cross correlation between the 2 signals and I obtained the folowing plot
then I performed the dtw function to calculate the distance and it was 720
can I say that the data from the two signals are correlated, and what is the meaning of the value obtained using dtw, and how I can proceed further with uncertainty investigation.
I would highly apreciate your feedback

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回答（1 个）

DEBOLEENA SADHUKHAN
From the cross-correlation output, you can compute the delay between the two signals by detecting the indices of the maximum correlation
[cor,lag]=xcorr(SIGNAL1,SIGNAL2);
[~,I]=max(cor);
signallag=lag(I)
delay= (length(signal)-signallag)*1/Fs

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