[Asterisk-Users] super high bandwidth codec

[Steve Underwood]

Eric Wieling aka ManxPower wrote:

> Steve Underwood wrote:
>
>> Steve Kennedy wrote:
>>
>>> On Sun, Jul 24, 2005 at 11:54:17PM -0700, Storm D. J. Petersen wrote:
>>>
>>>  
>>>
>>>>   I don’t know if I have the same experiences. Usually my Skype
>>>>   calls are very garbled at first. I find that my G729 Asterisk calls
>>>>   are better quality.  You can try using ULAW if you have the 
>>>> bandwidth.
>>>>   It. might make the “quality” sound better.
>>>>   Maybe it’s your SIP client/hardware phone that is giving you
>>>>   troubles.
>>>>   
>>>
>>>
>>>
>>> Skype uses ilbc, and g.729 for PSTN breakout.
>>>  
>>>
>> Skype uses wideband-ilbc.
>
>
> Do yu have a link for wideband-ilbc info?

It is described on the GIPS site, along with the narrow band ilbc. The 
wideband one is not offered to the world on a royalty free basis, as the 
narrow band one is. I have never looked at how it works. I don't know 
how similar/different the narrow and wideband codecs are. The wideband  
codec operates at 16k samples/second.

Regards,
Steve