[Vorbis] stereo couple

[Monty]

On Thu, Sep 29, 2005 at 08:01:08PM +0800, fangchao wrote:
> Dear All:
>     I studied the stereo couple documents and now confused, I wonder 
> why it can be done like that, and what is the principle behind that.
> I think i am confused perhaps because i have no background knowledge,
> can you help me out?
> Also, when doing the T/F transform,we used MDCT, so it means no imaginary part.
> And i am much puzzled about the angle in the stereo couple,what does it mean?
> and where does it come from ?

The documentation explains the entire mechanism in detail, including
background rationale with diagrams :-)

http://www.xiph.org/vorbis/doc/stereo.html

Monty