Re: [dispatch] [AVT] Proposal to form Internet Wideband Audio Codec WG

[Dean Willis <[e-mail]>]

On Jun 3, 2009, at 2:45 PM, Dan York wrote:

> I think we ultimately need a "G.711 for wideband", i.e. a wideband  
> codec that anyone can implement in any device.  I'd argue that a  
> large part of the reason we are "stuck" with so many people in VoIP  
> using G.711 is precisely because ANYONE can implement it in  
> basically ANY device.  You can buy a G.711 codec implementation or  
> you can write your own or find some code on the Internet (google "G. 
> 711 source code"). You can implement G.711 in your big softswitch or  
> IP-PBX... or you can implement it in some small embedded device.

We have such a codec: 16 bit sampling at 44.1 khz, aka "what your CD  
player does in stereo", or L16 audio as defined in RFC 1890.

While there might be some IPR on it, it clearly hasn't kept everybody  
and their dog from playing the audio format on devices ranging from a  
$3 CD player on up.


We also have RFC 3190, which does RTP format for 12-bit DAT audio and  
20 and 24 bit linear sampled audio.


So what is it that we need for a "wideband G.711" that isn't already  
in there somewhere?


It sounds like what you want is more a wideband iLBC, which is an  
intellectually much larger challenge.

--
Dean