Sup guys. This is not much of a ChucK question but here goes... I have some free time now to experiment with ChucK and I dug up some old emails from the list. There's one talking about analysing the frequency of a given signal and the short answer was to use the FFT. I decided I would try this aproach in order to receive input from my guitar, match the frequency being played and then issue a MIDI event to another synthesizing app. The problem is that I have a very abstract understanding of the FFT (I've used it before to do simple image processing). It does makes sense to me, e.g I can visualize in my mind what the FFT of a simple sound wave would look like, but I wasn't competent enough to extract the absolute pitch data that I wanted. Anyway can someone elaborate a little more on the topic of frequency analisys or maybe point me to a good tutorial? I think I'll start with the wikipedia article on the Fourier Transform and see where it gets me... -- http://www.twitter.com/lfzawacki http://www.linesocode.wordpress.com