On Mon, Apr 9, 2012 at 11:54 AM, Herbert Graf wrote: > Do a transform in to the frequency space (DFT or others depending on > what hardware you've got) and usually just select the biggest peak. > > You might have program a little more intelligence then that if you the > guitar is being put through distortion stuff, but I doubt it. > > If you're update rate is low (say 5Hz) you have lots of options. > I'm leaning towards this option the most. It feels the most logical. I'll probably use a dsPIC or a PIC32 depending on which chip can give me the most DSP performance. 5Hz seems like a very reasonable update frequency, I'll probably go with 10Hz or so. What do you mean by "lots of options"? Around what update frequency should I expect if I use a modern dsPIC or a PIC32 at full speed? --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .