Re: [LAU] lowest usable latency from a USB 1 device? | Linuxaudio.org

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

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From: Paul Davis <paul@...>

To: <lists@...>

Cc: linux-audio-user <linux-audio-user@...>

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

Date: Friday, September 16, 2011 - 6:11 pm

On Fri, Sep 16, 2011 at 2:02 PM, S. Massy wrote:

quoted text

> On Fri, Sep 16, 2011 at 01:33:42PM -0400, Paul Davis wrote:
>> if you can run a USB 1 class compliant audio device on your linux
>> system with lower latency than the current minimum so far posted to
>> this thread, please post with the settings you use and the type of
>> device. if your best performance has already been posted, no need to
>> repeat it.
>>
>> i'll get the ball rolling with 2048 frames. note that we are assuming
>> 2 channels only, but duplex mode (simultaneous capture+playback).
> Pardon my obtuseness, but... Well, are we talking frames per period, as
> in the -p option in jack's audio driver?

in JACK terms, the combination of:

* sample rate
* period size (frames per period)
* number of periods (periods per buffer)
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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?, S. Massy, (Fri Sep 16, 6:02 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?, S. Massy, (Fri Sep 16, 6:24 pm)

Re: [LAU] lowest usable latency from a USB 1 device?, david, (Fri Sep 16, 7:01 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)