AL wrote:
> 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!
>
>
It's not just changing the sample rate -- you need to alter the tempo
without throwing the music out of tune. That's going to be much more
sophisticated (and if you find a web site let me know).

This is just the sort of thing that a standard DSP processor is made
for, given the right software.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com