> > There is an FFT algorithm in Microchip's 'Embedded Controller Handbook'. > The application note may therefore be available on Microchip's Web Page. > > Andy > Andy, Thank you for redirecting me. I thought that I read the book from cover to cover. So much for my long term memory. Where can I buy more ram for my brain? Yours, -- Derrick Early early@finite.nrl.navy.mil