Subject: Re: [linux-audio-user] USB Quattro and Jack questions
From: Patrick Shirkey (pshirkey_AT_boosthardware.com)
Date: Tue May 27 2003 - 14:42:36 EEST
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
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