Re: [LAU] lowest usable latency from a USB 1 device?

Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
To: <linux-audio-user@...>
Date: Monday, September 19, 2011 - 10:02 am

On 16/09/11 18:46, Paul Davis wrote:

I have an Edirol UA-1000: it was one of the first USB2 audio devices
made, and has its own kernel driver (common with the Edirol UA-101,
which superceded it). AFAIK it's not class compliant with either USB1 or
USB2. It has 12 inputs and 10 outputs.

jackd runs very nicely with:

/usr/bin/jackd -P89 -t2000 -dalsa -r44100 -p256 -n2 -D -Chw:UA1000
-Phw:UA1000 -zs -I110 -O110

Hardware is a Dell Vostro 1520 laptop, Core2 Duo 2.4 GHz P8600.

Other software is Ubuntu 10.04, vanilla kernel from kernel.org
(currently 3.0.4), and jack1 from svn.

I get the occasional xrun if I forget to disable CPU frequency scaling
and the DSP load gets high, but otherwise it goes all day xrun free with
these settings.

Colin.
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-user

Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]

Messages in current thread:
[LAU] lowest usable latency from a USB 1 device?, Paul Davis, (Fri Sep 16, 5:33 pm)
Re: [LAU] lowest usable latency from a USB 1 device?, Clemens Ladisch, (Mon Sep 19, 9:03 pm)
Re: [LAU] lowest usable latency from a USB 1 device?, Niels Mayer, (Tue Sep 20, 3:48 pm)
Re: [LAU] lowest usable latency from a USB 1 device?, Hartmut Noack, (Sat Sep 17, 3:35 pm)
[LAU] Re : lowest usable latency from a USB 1 device?, Frank Kober, (Sat Sep 17, 6:14 am)
Re: [LAU] Re : lowest usable latency from a USB 1 device?, Jeremy Jongepier, (Sat Sep 17, 9:36 am)
Re: [LAU] lowest usable latency from a USB 1 device?, Ken Restivo, (Fri Sep 16, 7:09 pm)
Re: [LAU] lowest usable latency from a USB 1 device?, Fons Adriaensen, (Fri Sep 16, 6:22 pm)
Re: [LAU] lowest usable latency from a USB 1 device?, Rui Nuno Capela, (Fri Sep 16, 6:15 pm)
Re: [LAU] lowest usable latency from a USB 1 device?, Paul Davis, (Fri Sep 16, 6:11 pm)
Re: [LAU] lowest usable latency from a USB 1 device?, Atte André Jensen, (Fri Sep 16, 5:43 pm)
Re: [LAU] lowest usable latency from a USB 1 device?, Paul Davis, (Fri Sep 16, 5:46 pm)
Re: [LAU] lowest usable latency from a USB 1 device?, Colin Fletcher, (Mon Sep 19, 10:02 am)