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

[ABDUL MOIZ]

Hi Arun,

              Can you pls send me the link of pulseaudio source code(with
echo cancel) that has been tested and working fine on pandaboard.

Thanks,

Regards,
Abdul Moiz


On Mon, Jul 25, 2011 at 8:54 PM, Arun Raghavan <
arun.raghavan at collabora.co.uk> wrote:

> On Mon, 2011-07-25 at 15:21 +0000, Alexander E. Patrakov wrote:
> > ABDUL MOIZ wrote:
> >
> > > Hi,
> > >
> > >         Thanks for the reply.
> > >
> > >       Now I am able to run the pulseaudio daemon with echo cancel
> source
> > >       and
> > > sinks without any problem on my ubuntu desktop system. Now I want to
> > > enable echo cancel module on my omap4 (PANDA) board. I followed the
> same
> > > steps as i have done for ubuntu desktop. Pulseaudio daemon is working
> > > fine but when i tried to load the Echo cancel module, the daemon is
> > > getting killed.
> >
> > Echo cancellation is a very cpu-intensive process (even on my Core i5)
> > that also involves floating-point operations. I think that omap4 is just
> > not powerful enough to do echo cancellation in software, and I guess
> > that's why your pulseaudio deamon is getting killed for running over the
> > CPU time limit.
> >
> > Could you try to verify this theory by uncommenting the "cpu-limit = no"
> > line in daemon.conf? This will lock up your omap4 board, though, if I
> > guessed the reason correctly.
>
> Worth a shot, but from what I know, the echo-cancel module actually
> works fine on Pandaboards -- doesn't even drive up CPU scaling.
>
> -- Arun
>
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