[Freeswitch-dev] Merging A Law Audio data

Brian West brian at freeswitch.org
Tue Jun 29 06:37:38 PDT 2010

But thats raw PCM that its mixing together.  I don't think you can directly mix A Law audio without first taking it to Signed Linear.


On Jun 29, 2010, at 8:29 AM, Steven Ayre wrote:

> See the source of src/mod/applications/mod_conference/mod_conference.c, function conference_thread_run
> It reads frames from each of the participants and manually combines them all to form a mux frame, which is then sent to all participants. This is done using the internal audio representation (possibly L16). So even where everyone is using the same codec, e.g. PCMA, there's transcoding going on.
> I don't know any way to achieve what you want at the moment, but someone else might. You should be able to write you own module to do it too though.
> -Steve

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