These are links contributed by various people.
Digital Signal Processing links
Edward Coffey's DSP Links Page
This isn't a link, but I thought I'd mention a cheap but excellent book on the subject: Schaum's Outline of Digital Signal Processing, ISBN 0070273898. I have found Schaum's texts to be of equal or better quality than the mainstream textbooks, in every subject I have tried. They are no-nonsense, and very cheap (usually $15 US.) --dto
Links to other audio projects
Under construction :-)