Hello,

Ed W has kindly sponsored the development of Asterisk support for Codec
2.  This involved some patching of the Asterisk core, and the
development of an Asterisk codec module "codec_codec2.so".

This has some applications where header compression and trunking
multiple calls can make the bandwidth savings possible with Codec 2
useful for VOIP.

I have a first pass of Codec 2 support for Asterisk running, and have
made a few calls.  First time I have actually had a real-time
conversations over Codec 2.  Usually I just listen to samples, so this
system is useful for conversational testing alone.  

I talked to my 6 year old to see how it handles children.  I think they
actually sound better than males, which have a clicky artefact to them.
The levels were a bit low for me, not sure if that is due to the codec
or my SIP phones.

Its given me some ideas for tuning Codec 2 that I will look at over this
year.

Instructions for building and testing are here:


https://freetel.svn.sourceforge.net/svnroot/freetel/codec2-dev/asterisk/README

Cheers,

David


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