[Vorbis-dev] Ambisonics in Ogg Vorbis

[Sebastian Olter]

Paul Martin:

> 0.3536,0.3536,0.3536,0.3536,\
> 0.1768,0.1768,-0.1768,-0.1768,\
> 0.1768,- 0.1768,-0.1768,0.1768,\


This means, despite the overall -9dB gain,
LF=W+(X+Y)/2,
RF=W+(X-Y)/2,
LB=W-(X-Y)/2,
RB=W-(X+Y)/2.

The exact solution (i.e. velocity decode) for the Furse-Malham equation set
applied to a regular square is

L = 1.4 W + X/cos π/4 + Y/sin π/4 = 1.4 (W+X+Y)

and so on, which means that we should talk about cardioid decode here rather
than energy decode.
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