Subject: Re: low latency USB audio broken? [was Re: [linux-audio-user] open source firewire]
From: Lee Revell (rlrevell_AT_joe-job.com)
Date: Mon Nov 29 2004 - 01:34:22 EET
On Sun, 2004-11-28 at 17:17 -0600, Ryan Gallagher wrote:
> On Sun, 2004-11-28 at 15:51 -0500, Lee Revell wrote:
> > On Sun, 2004-11-28 at 15:35 -0500, Lee Revell wrote:
> > > Can you provide more information? What exactly doesn't work? What are
> > > the symptoms?
> >
> > OK I updated the JACK bug report. Can you (or any USB audio users)
> > repeat the test with the latest JACK and ALSA versions (preferably from
> > CVS), with both alsaplayer and jackd, at 44100 and 48000Hz? Also please
> > try the JACK test in full duplex, capture only, and playback only mode.
>
> Sure, glad to (though I'm not set up to do capture only). Thanks for
> taking an interest.
>
> The results with CVS jackd and (very recent alsa 1.0.7) on a 2.6.8.1
> kernel with volluntary-preempt are... the same as a year ago.
You can do capture only like:
jackd -d alsa -C hw:1 ...
and playback only with:
jackd -d alsa -P hw:1 ...
How does this sound? It's possible that capture and playback interfere
with each other.
Lee
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