I'm new on the forum and am having difficulty finding stuff.

Is there a page with a format definition of Vorbis?

I'm thinking of something along the lines of

http://wiki.xiph.org/index.php/OggPCM_Draft2

Have you tried the first link that shows up after typing "vorbis specification" in google?

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

Here is what you are looking for you. You never specified what spec you were interested in. That about sums them up.

Many thanks Gentlemen.

This is just what I'm looking for.

section 4.3.9 output channel order says

"Applications using Vorbis for dedicated purposes may define channel mapping as seen fit. Future channel mappings (such as three and four channel Ambisonics [http://www.ambisonic.net/]) will make use of channel mappings other than mapping 0."

The surround sound discussion group

https://mail.music.vt.edu/mailman/options/s...0justnet.com.au

is keen to have Ambisonics properly managed in Vorbis.

Is this the right forum to open a discussion on this?

Or is setting the spec for Vorbis II better dealt with elsewhere?

No it's not the encoder needs to redesigned in order to properly support ambisonic decoding. Yes this is the right forum. It's supposed to support up to Ambisonic-G format, which sounds more out of reach to me then the normal Ambisonic-B rig, but I am sure they have something in mind.

Actually B-format is the usual Studio format from which all other formats are derived. This is what we want to formalise in Vorbis.

G-format is simply a supa dupa Ambisonic format decoded into 4.0, 5.0, 5.1 ... Zillion.1 so anyone can play it.

I'll start another thread for the discussion.

Many Thanks.

The only time I have actually heard of ambisonic-B format being acessible is for recordings that were done with a Soundfield Microphone. I hear it terms of three-dimensionality and spatialization it's better then 5.1 recordings, but then again how many people actually listen to 5.1 recordings properly let alone make sure they are mixed correctly.