[Asterisk-Users] G729 codec for asterisk

[Kevin Walsh]

Adam Hart [adam at teragen.com.au] wrote:
> Kevin Walsh wrote:
> > brian [brian at bkw.org] wrote:
> > > No you MUST pay per channel because the patent holders require that. 
> > > The patent holders would !@#$ kittens if you had no port limit or any
> > > type of control on it.  That's why the control and registration
> > > processes are in place to comply with the patent holders
> > > requirements.  So your request translates into "I want something for
> > > nothing". 
> > > 
> > I see it as the patent holders who want something for nothing.
> > Haven't they been paid enough millions to justify that tiny amount of
> > work yet? 
> > 
> CELP (Code Excited Linear Prediction) and (more specifically) ACELP was
> a revolutionary change in encoding of voice, it ain't a 'tiny amount of
> work'. 
> 
You have been misinformed.  ACELP is an update (i.e. tiny amount of work)
to CELP.

CELP can be freely used, and is used as part of the SpeeX (free software)
project.  ACELP cannot be used within the USA without paying monopoly
money to the current owners of the patent.

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