[pulseaudio-discuss] Need help to enable echo cancel in pulseaudio

[ABDUL MOIZ]

Hi,

          I am using USB mic with my omap4 panda board.

    Without PA module, using directly Alsa, i found there is no delay but
echo is there.
    But by accessing Alsa through PA module, then there is delay and echo.
    Even if I load echo-cancel module, echo is not being reduced.

    Can you suggest any solutions why delay is being introduced when using
USB mic with PA module whereas normal mono mic is not giving any delay with
PA module.

CPU Usage : for PA = around 25 %  without echo module
                                 = around 50-60% with echo-module.

   Thanks,

   Regards,
   Abdul Moiz


On Mon, Aug 1, 2011 at 7:33 PM, Arun Raghavan <arun.raghavan at collabora.co.uk
> wrote:

> Hi,
>
> On Mon, 2011-08-01 at 14:51 +0530, ABDUL MOIZ wrote:
> [...]
> > Additional debug info:
> > gstbaseaudiosrc.c(822): gst_base_audio_src_create
> > (): /GstPipeline:pipeline0/GstAlsaSrc:alsasrc0:
> > Dropped 135515040 samples. This is most likely because downstream
> > can't keep up and is consuming samples too slowly.
> >
> >
> > And the daemon is getting killed and cpu usage is showing above 170%.
> >
> > Can you please help me in
>
> Given the messages about the machine not being able to keep up, I
> believe there must be some sort of serious misconfiguration of your
> system (bad kernel? bad clocking?), because PulseAudio runs just fine on
> much less powerful hardware.
>
> > 1. How module-echo-cancel is dependent on module-suspend-on-idle and
> > how to load both the modules in default.pa file
>
> It's not.
>
> > 2.Why the above gst pipeline is not working and daemon is getting
> > killed.
>
> It should work fine anyway, but why are you using alsasrc/alsasink
> instead of pulsesrc/pulsesink?
>
> -- Arun
>
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