[codec] Codec prototype

[Jean-Marc Valin <[e-mail]>]

Hi guys,

We have just completed a very early prototype hybrid codec that combined 
SILK and CELT to encode 48 kHz speech. We have submitted an I-D that 
describes the resulting codec: 
http://www.ietf.org/id/draft-valin-codec-prototype-00.txt . This is still 
very incomplete, but we preferred to submit early so that people can have a 
look at what we've been doing. This first version has no flexibility 
(except for the bit-rate), but that should get better. Same with the 
quality -- there's been no tuning yet.

The code is available with a git repository at 
git://git.xiph.org/users/jm/silk.git . It also depends on the CELT 
repository (git://git.xiph.org/celt.git) and an "unofficial" SILK 
repository (git://git.xiph.org/users/jm/silk.git). See the README file for 
basic instruction on building the code. The current build system is highly 
non-user-friendly, so please bear with us.

There is a complete tarball of the current version (for those who don't 
have git) at: http://people.xiph.org/~jm/ietfcodec/ along with samples at 
http://people.xiph.org/~jm/ietfcodec/samples-20100705/ . Unlike previous 
samples, these are *not* simulations and are produced without any cheating 
by the hybrid codec prototype. The rates are 32, 40 and 48 kb/s CBR.

Enjoy,

	Jean-Marc and Koen