[Opensim-users] Improve voice quality OpenSim and FreeSwitch

[Teravus Ovares]

I actually hacked up FreeSwitch to return the codec name that SLVoice wanted
and use G7221 and it crashed SLVoice.

The codec that they're using is a proprietary codec named "SIREN14-3D" and
the G7221 codec is supposedly equivalent to "SIREN14" but it isn't
"SIREN14-3D".

Sorry!

Teravus


On Mon, Nov 8, 2010 at 8:07 PM, enauman <enauman at hewittschool.org> wrote:

>
> Actually you are observing what Kai Ludwig describes in the comments at the
> bottom of the Zaki post you referenced in your previous post
> (http://zaki.asia/2009/04/28/freeswitch-module-in-opensim/):
> "Actually the new FreeSwitch siren14 codec has never been used with
> SLVoice!
> Everybody having voicechat with OpenSim is using PCMU without knowing it.
>
> The current combination of OpenSim+SLVoice+SfreeSwitch does not use the
> siren14 codec. Instead the communication falls back on using
> PMCU/8000+L16/8000, as it can be seen when analyzing the traffic.
>
> SLVoice asks for “SIREN14-3D”, FreeSwitch offers “G7221″. Not matching
> makes
> SLVoice fall back to its other choices wich are PCMU/8000 or PCMA/8000.
> Though this still works it is not giving the high quality that has to be
> expected by the siren codec. And even worse the PCMU codec has a permanent
> up- AND downstream of each 90 kps even when not transmitting.
>
> Still no solution found for this issue … and I dont know if SLVoice is
> compatible with the G7221 implementation at all."
> --
> View this message in context:
> http://opensim-users.2152040.n2.nabble.com/Improve-voice-quality-OpenSim-and-FreeSwitch-tp5716434p5719289.html
> Sent from the opensim-users mailing list archive at Nabble.com.
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