Hi,

I'm a university student studying Electronics Engineering and Bournemouth
University in England.

For my final year project I need to understand how CD mixers work. I know
they alter the sample rate to change the speed (pitch) of the track being
output thus allowing the DJ to mix the tracks (getting the tempo's to
match).

How is this done? Are there specific DSP processors to alter the sample
rate? Or can any standard audio DSP processor be programmed to perform this
task?

Any help/advice/website links greatly appreciated!