Re: firewire or USB audio outputs spdif-like code?

Mike Rivers wrote: 
Mike Rivers wrote:

My earlier response to this didn't show up, so I'll try again. If it
does get here eventually, I hope I said about the same thing both
times.


Aw***! Take your pick.

LoL, sorry, didn't mean to cause a stir here. I normally don't follow this NG, just thought it can't hurt to consult you guys.
Guess I should have talked to a DIY Forum. Anyway,
if you are still interested read on.
(Arny, yes there are USB Audio devices with SPDIF outputs. I just wanted to find out what people do who don't want to get a whole sound card just to output digital sound)
My system is so inflexible cause I built it myself. I always had a thing for active speakers. My old (analog,DIY) ones are kind of outdated now. And I also wanted to play with class D amplifiers. So I built these two way speakers and amplifiers using what's available on chips (From Texas Instruments) If anyone is interested:DIR1703 as SPDIF interface, TAS3002 as sound processor and digital HP/LP filter, TAS5001 as PWM converter and TAS5112 as output driver.
With no Filters and very short wires between amp and speaker there is this crisp sound only active speakers can produce, even with kind of lower priced drivers (Vifa D19TD Tweeter and Peerless PAE BC14SG08 Midrange).
There is also a easy way to wireless transfer SPDIF to the speakers with SPDIF. Of course I have a sub too, same type amps.And the filters are programmable by PC, just using te printer output. So I can play with different filter frequencies and characteristics.
So, I wouldn't call this exactly "High End", but for me it's good and cheap, and it gives me pleasure to build and hear it actually work.
SPDIF is a 2 wire signal with Biphase encoding and I guess that's not what USB and 1394 interface chips are made to produce natively. So I thought someone has gone through this before and written or bought a driver that does just that: Trick a USB or 1394 chip to output SPDIF.

Cheers

Tony
.

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