Hello all,

I'm not really new to Processing, but I am very new to audio. I've searched the old forums and I saw alot of topics on audio, but I never found a good solution for my simple problem.

Basically, the only thing I want, is to know the frequency of incoming sound. I used to write a little program that did this using the krister.Ess library, but that library doesn't seem to work anymore...

I've got two iMacs which both send out a short sinewave on a certain frequency (i.e. 3000 & 5000). When iMac1 receives a tone at +- 3000Hz, it should send out a tone at 5000Hz.. When iMac2 receives a tone at 5000Hz, it should send out at 3000Hz. So they're just ping-ponging a sinewave to eachother... I need a script what will listnen to audio, and DO something once it receives audio from about an certain frequency.

I read alot about FFT and stuff, but I can't really seem to get audio input and fft analyse together...

I hope you understand what I mean. Is there anyone who could give me a lead on this?

Thanks in advance


ps. It doesn't have to use the krister.ess library ofcourse... Anything that will work is fine!