g216723524ea@ucdavis.UUCP (g216723524ea) (05/24/86)
< line eaters do it byte by byte > I'm looking for a machine-language Fast Fourier Transform in 6502 machine code (ideally for an Apple). A little search led to the 1979-ish BUY-IT (Byte) article, 'Fast Fourier for the 6800', and to a 1984 article for a 6502 FFT in the Amer. J. Physics (vol 52, July-Dec). This volume happens to be out of our library (and has been overdue a week now!), so I don't even know if it's a useful listing or discussion. Before I start hand-translating the 6800 code, has anyone any other ideas or sources (or even access to that missing volume? Sorry I don't have the full reference handy here.) The code will be used in a stimulus-control and signal-averager BASIC program used by a neurophys lab which I work for here at U.C. Davis. Thanks for any and all help. Ron Goldthwaite, Psychology, UCD