[PD] Measuring position between two microphones?

[Charles Henry]

> It depends on the source, if its an impulse or if it's a periodic wave, for which
> correlation approach. I was reading this interesting one recently and
> wondered if anyone tried it

Try using my sxcorr or sxcov patches from the previous thread about
cross correlation, with pique~ to find the location of the peaks.  It
will give you sample accurate measurements.

You'll get better temporal accuracy using broadband signals, I think.
Just play noise or frequency sweeps through the channel and correlate
it with what you get back.
I have tested this idea with blocksize of about 16384 (waaaay more
than 10 ms) and it's not so cpu intensive.  (but I only have a single
microphone... your calculations must be more involved)

Good luck,
Chuck