[asterisk-dev] iLBC packet loss concealment (was: code-cleanup concerns)

[Denis Smirnov]

On Mon, Apr 17, 2006 at 07:27:04PM +0800, Steve Underwood wrote:

SU> That is a slightly different issue, as it involves rate changes. 
SU> However, it really doesn't make sense to do this in practice, though. 
SU> The two ends should negotiate to use a common variant of Speex. 
SU> Transcoding between variants is silly. Even when there are branches in 
SU> the path, such as with conferencing, it doesn't really seem like much of 
SU> a gain.

Transcoding between variants can appear, if we have recordings (for voice
prompts) in ultra wideband version (32k), and would play to phones, that
support only low-rate codec version (16k).

For speex this transcoding cheaper, then uwb<->sln<->wb transcoding.

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