Xcorr - plot correlation across time.
9 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
Hi,
I'm very new to Matlab and what i'm trying to do is find the correlation of two separate audio .wav files. At the moment I have the following (x & y are my .wavs):
C = xcorr(x,y,'coeff');
ICC = max(abs(C));
This allows me to find the point with the highest correlation, right?
But what I want to do is take a reading of the xcorr or 'C' at 80ms intervals so I can plot the correlation over time, rather than just at one point.
Any ideas?
Thanks in advance.
1 Commento
RNTL
il 10 Giu 2012
but you do have it over time, that's what C means.
and (if both signals have the same sample rate) it is spaced according to the sampling time.
Risposta accettata
Wayne King
il 10 Giu 2012
t = 0:0.001:1-0.001;
x = cos(2*pi*100*t)+randn(size(t));
y = sin(2*pi*100*t)+randn(size(t));
[xc,lags] = xcorr(x,y,'coeff');
stem(lags*0.001,xc);
The above gives the lags as sampling intervals, 0.001 seconds in this example.
0 Commenti
Più risposte (0)
Vedere anche
Prodotti
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!