[pulseaudio-discuss] Need help to reduce delay with USB, mic using pulseaudio

[Colin Guthrie]

'Twas brillig, and Lu Guanqun at 11/08/11 17:20 did gyre and gimble:
> Hi Ashwani,
> 
> On Thu, Aug 11, 2011 at 11:02:41PM +0800, Pierre-Louis Bossart wrote:
>>> I am attaching the pulseaudio usb mic delay log.
>>> When I am running gst-launch-0.10 ! pulsesrc ! pulsesink on pandaboard
>>> getting around 2-3 sec. on the fly audio delay.
>>>
>>> Please suggest how to resolve this problem.
>>
>> Use module-loopback and play with the latency parameters.
> 
> In case you don't know what the latency parameters are, on the
> gst-launch line, you can append these parameters: e.g.
> 
> gst-launch-0.10 pulsesrc buffer-time=<xxxx> latency-time=<xxxx> !
> pulsesink buffer-time=<xxxx> latency-time=<xxxx>
> 

I suspect Pierre was referring to the latency_usec param on module-loopback.

Col


-- 

Colin Guthrie
gmane(at)colin.guthr.ie
http://colin.guthr.ie/

Day Job:
  Tribalogic Limited [http://www.tribalogic.net/]
Open Source:
  Mageia Contributor [http://www.mageia.org/]
  PulseAudio Hacker [http://www.pulseaudio.org/]
  Trac Hacker [http://trac.edgewall.org/]