On Sun, 11 Jun 2006 22:20:35 +0100, in sci.electronics.design Pooh
Bear wrote:



Laurence Payne wrote:

On Sun, 11 Jun 2006 21:05:01 +0100, Pooh Bear
wrote:

I'm interested in passing stereo audio over USB in both directions.

I believe that Windows already has a 16bit driver for this but I want 24bit.
Does this mean one has to write one's own ? It's slightly outside my area of
expertise. I'd aslo be interested in how Macs support this function.

Any general advice about implementing this, recommended chips etc is very
welcome. The quality needs to be high-end / professional rather than consumer
btw which I suspect means using separate A/D and D/As.

There's no shortage of affordable boxes that do this. Do you need to
re-invent it?

If one followed that line of thought I wouldn't design anything would I ? Besides,
no-one's done what I'm planing to offer. The USB interface is actually very much
an add-on extra to something else.

I suppose you could take one apart and see what's in it.

That's not really the way I normally do things. Beside, I don't want to
necessarily use what was possibly state of the art when they were designed maybe
several years back when better may be available.

Graham

Have a word with FTDI http://www.ftdichip.com/ they might be able to
pint you somewhere suitable


martin