We've updated the SILK draft: http://www.ietf.org/id/draft-vos-silk-01.txtIt now includes an appendix with the complete SILK fixed-point source code. Some more work to be done on the codec description.
We're working hard to make the source code available at https://developer.skype.com/silk/ in a more convenient format.
Also, we will also soon provide details about Skype's patent licensing terms. Thanks, Koen, Karsten, Soren
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