opus - Jul 2013 - Transcoding OPUS?

Hello,

I'd like to ask whether there is some documentation with recommended
parameters for transcoding voice codecs such as G722, G711a/u <-> Opus
with
near-transparency.

My Idea is to have something like:

 HW-Phone  <-> Asterisk   <--------->  Asterisk <-> HW-Phone
  (G722)
(Opus)                             (G722)

in order to lower the bandwidth between the two Asterisk* servers while not
compromising (much) the quality of the call.

Thanks!

(* I mean of course a custom build of Asterisk patched with Opus support
and tuned for this task)
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Hi,

Based on my experience, I think if you use 12 kb/s for narrowband and 24
kb/s for wideband you'll suffer very little degradation.

Cheers,

	Jean-Marc

On 07/27/2013 02:18 PM, Butrus Damaskus wrote:
> Hello,
> 
> I'd like to ask whether there is some documentation with recommended
> parameters for transcoding voice codecs such as G722, G711a/u <->
Opus
> with near-transparency.
> 
> My Idea is to have something like:
> 
>  HW-Phone  <-> Asterisk   <--------->  Asterisk <->
HW-Phone
>   (G722)                                  
> (Opus)                             (G722)
> 
> in order to lower the bandwidth between the two Asterisk* servers while
> not compromising (much) the quality of the call.
> 
> Thanks!
> 
> (* I mean of course a custom build of Asterisk patched with Opus support
> and tuned for this task)
> 
> 
> _______________________________________________
> opus mailing list
> opus at xiph.org
> http://lists.xiph.org/mailman/listinfo/opus
>