[Vorbis-dev] 5.1 surround channel coupling

[Ralph Giles]

On Thu, Feb 01, 2007 at 02:14:49PM +0000, Ivo Emanuel Gonçalves wrote:

> You mentioned Vorbis needs surround, but what about FLAC and OggPCM?
> Are those alright and only Vorbis lacks surround due to it being a
> lossy format?  Or what, exactly?

All these formats support multiple independent channels just fine. You 
can encode a surround soundtrack in any of them. What's missing is 
tuning of the reference vorbis encoder to produce better quality/bitrate 
for 5.1 surround mixes by taking advantage of redundancy between the 
channels. Without that we're not technically competitive with AC3.

 -r