>Hello picer's > >Does anyone have any bright ideas for signal processing on a pic? >I would like to find an rms value for for every 2 kHz to 20 kHz >on a 8 bit digital signal. I know how to do this using fft's and >all that, but I don't think an fft would be easy to write for a >pic. > >I also know of several references on signal processing; however, they >always assume that your postprocessing on something bigger than a pic. > >Derrick Early There is an FFT algorithm in Microchip's 'Embedded Controller Handbook'. The application note may therefore be available on Microchip's Web Page. Andy