Multiple delays using cross correlation

I want to find multiple delays between two signals using xcorr in matlab. I'm getting the single delay when i use the following code [x,lag]=xcorr(r1,r2); [m,i]=max(abs(x)); delay=lag(i); But the problem is i'm not getting correct output, when there are multiple delays. Can anyone help me to find multiple delays between two signals

[Wayne King]

You are using max() so you are getting a single value. When you say multiple delays, are you trying to account for echoes?

Can you say something more specific about your signals.

[Sravantej]

hi wayne, i'm generating the multiple delayed signal by summing signals that are delayed by different delays and now i need to find all those delays

Answer 1

[Honglei Chen]

Once you get the result of xcorr, you can use findpeaks to locate multiple peaks.

[x,lag] = xcorr(r1,r2);
[pks, locs] = findpeaks(x);
delay = lag(locs);

For options in findpeaks, see the doc

doc findpeaks

HTH