Well, actually he pointed the algorithm to me, as if he needed it, but checking what it is, seems like a more efficient FFT, suited for small processors, and he doesn't seem to need that. Maybe TimbreID is good for the job.

Anyway, there's a C code in this wikipedia, anyone curious could make an external :-)

cheers

2012/12/9 Alexandre Torres Porres porres@gmail.com

Hi there, a friend is looking for a way to do DTMF recognition in Pd. I know there is this Goertzel algorithm < http://en.wikipedia.org/wiki/Goertzel_algorithm%3E and I wonder if anyone has already implemented something about it in PD.

Maybe some other option?

thanks Alex