Is there any reason why cubic splines are a poor method for interpolation of audio signals such as speech or musical instrument sounds? Also, once upon a time I had a copy of a paper written by someone (if I recall correctly) who worked for E-mu systems talking about pitch shifting. Again IIRC, the conclusion was that for a given amount of computing power, polynomial interpolation would always beat decimation/interpolation as a pitch-shifting technique given the measurement of distortion in the paper. I note that R B-J seems to know most of the computer music papers I know, perhaps he recognises it. What I would to revise is exactly how polynomials were fitted to the samples in that paper. If no-one recognises the paper, then general comments on the use of cubic splines would be appreciated. Cheers, Ross-c
Interpolation by cubic splines
Started by ●February 6, 2006