i want to display it like the picture attached...
Am 04.11.2010 16:14, schrieb Mathieu Bouchard:
On Thu, 4 Nov 2010, Martin Schied wrote:
Hi everyone, i wondered if someone made a patch measuring the PHASE of areference signal compared to measured signal
you could one of the cross-correlation externals to measure the time delay between 2 signals. (there's one external in iem_tab from pd-extended I remember and there are possibly more). If that's useful for you I created a similar, fft based patch using vanilla objects I can post here. However correlation doesn't directly measure phase differences of separate frequency bands but the delay of the signal over all frequencies.
What do you mean ? If you get the imaginary part of the logarithm of the cross correlation, it gives you a list of phase differences corresponding to each frequency bin, right ?
(that's equal to the atan2 between the real and imaginary parts of the cross-correlation)
| Mathieu Bouchard ------------------------------ Villeray, Montréal, QC
