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Re: [Linphone-developers] echo when using alsa dmix


From: Vadim Lebedev
Subject: Re: [Linphone-developers] echo when using alsa dmix
Date: Tue, 22 Mar 2011 14:38:07 +0100
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.14) Gecko/20110223 Thunderbird/3.1.8

I would suspect rate conversion here.....

Thanks
Vadim

On 17/03/11 09:58, Guillermo Rodriguez Garcia wrote:
Hello all,

I am using linphone-3.3.2 on Linux, and it works fine without echo.
However if I setup dmix for alsa, echo cancellation stops working.

This is what I added to my asound.conf file:

pcm.!default {
   type plug
   slave.pcm "swmixer"
}

pcm.swmixer {
   type dmix
   ipc_key 1234
   slave {
     pcm "hw:0,0"
     period_time 0
     period_size 1024
     buffer_size 4096
     rate 44100
   }
}

If I disable software mixing, then echo cancellation works fine.

Any suggestions on how to get echo cancellation to work with dmix?

Thanks,

GR

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