Subject: Re: [linux-audio-user] USB Quattro and Jack questions
From: Brian Redfern (bredfern_AT_calarts.edu)
Date: Tue May 27 2003 - 17:16:51 EEST
I don't know that jack won't work, it seems like its very close to working
on the quattro, but still has some fairly bad bugs that need to be worked
out. I need to learn C better so I can actually help in the bug
extermination effort.
On Tue, 27 May 2003, Patrick Shirkey wrote:
> 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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