[opus] Are the ITU's stretched-to-wideband codecs being used?

Jean-Marc Valin jmvalin at jmvalin.ca
Mon Mar 10 11:02:01 PDT 2014

I could be wrong, but I don't think these codecs are being in used very
much. I also suspect most of the uses are in places we don't see, like
inside a carrier's network. In any case, I never found these new
extensions that interesting. Embedded coding itself has some advantages,
but embedding an old codec pretty much cripples the result IMO.


On 10/03/14 08:27 AM, Steve Underwood wrote:
> Hi,
> The ITU has been churning out a series of codecs which stretch older 
> codecs to support wideband or super wideband and stereo. Does anyone 
> know of these things being used in the real world? They push the idea of 
> these things offering high compatibility, as the narrowband bitstream is 
> embedded in the wideband stream. However, I'm skeptical this offers any 
> real world advantage.
> Regards,
> Steve
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