[Vorbis-dev] Re: [ogg-dev] Ambisonics in Ogg Vorbis

[xiphmont at xiph.org]

On 4/18/07, Martin Leese <martin.leese at stanfordalumni.org> wrote:
> Ian Malone <ibmalone at gmail.com> wrote:
>
> > It depends what your aim is.  The mapping type
> > in the vorbis setup header is meant for
> > this[1],[2].  Of course a nonzero mapping type will
> > cause a lot of players to give up, but so will
> > including the XML stream.  I believe this is how
> > is was intended multi-channel would be handled.
>
> Thanks for the response, and for the
> references.  Did you mean mapping type = 0
> for multi-channel and 1 for Ambisonics?

In Vorbis?  Not much.  make sure the encoder knows what to do (eg, how
to tell it the file is ambisonic, and make sure it only uses lossless
couplings).

Players will need proper decode/playback support.

OK, it is officially time for me to set up an ambisonic playback rig here.

Monty