[linux-audio-user] USB Quattro and Jack questions

[Patrick Shirkey]

Denis de Leeuw Duarte wrote:
> Hi folks,
> 
> I've got a few questions about the USB Quattro and Jack. Hope you can 
> anwer s ome of them:
> 
> I'm writing this app and I managed to get my Quattro going with Jack, 
> but only two of the outputs are available as ports at a time (quattro1 
> or quattro2). Is there a way to invoke jackd so all four ins and outs 
> are available as Jack ports? I use the .asoundrc file Patrik Shirkey 
> wrote, but I understand too little of it to work it out :).
> 

I am running it right now with the latest cvs and I can see all four 
port i/o.

Now the question is whether or not we have full duplex or if it has been 
broken recently as Brian suggests.

I will check now.

> Another question:
> 
> How good/bad are the latencies other Quattro owners have experienced 
> with Jack at 96k? Is it good enough to attempt close to real time signal 
> processing in software?

It's highly unlikely that jack and usb will work well with low lat at 
any sample rate.



-- 
Patrick Shirkey - Boost Hardware Ltd.
Http://www.boosthardware.com
Http://www.djcj.org - The Linux Audio Users guide
========================================

Being on stage with the band in front of crowds shouting, "Get off! No! 
We want normal music!", I think that was more like acting than anything 
I've ever done.

Goldie, 8 Nov, 2002
The Scotsman