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Re: [Linphone-developers] Choppy sound with ALSA, wavs sound fine

From: Eugenio Bargiacchi
Subject: Re: [Linphone-developers] Choppy sound with ALSA, wavs sound fine
Date: Fri, 17 Jun 2016 15:37:51 +0200

It seems that by default the output of linphone went to the alsa plughw device, which was able to properly play 44100hz sound (such as wav), but not 8000hz calls. This device was also not listed anywhere in the alsa configuration which was weird.

So I seem to have solved it by specifying alsadev=sysdefault and all the dev_ids to ALSA: sysdefault.

On Fri, Jun 17, 2016 at 2:03 PM, Eugenio Bargiacchi <address@hidden> wrote:
I'm having some trouble setting up Linphonec on a particular machine. Linphone can seem to play wav files just fine (the ring at the start of a call is perfect), the microphone sounds perfect, however when the call is connected and switches to 8000hz sound becomes really choppy. It is still understandable but really really bad quality. I have the same dev_id both for the ringer device and the playback device.

Recording the call to a wav and playing it back with aplay sounds perfect.

On this machine I have ALSA only. I have made a test using the PjSua client and it works fine, so I believe something in the configuration of Linphonec must be wrong when sending the audio to ALSA.

Can you help me?

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