Re: [Sursound] Ambisonics in Ogg Opus

[Marc Lavallée]

Thanks Martin!

I tried Opus a while ago for ambisonics, and it works well. But I
had to hack the encoder so it would not combine channels together,
because the default behavior is to consider multichannel streams as
quadraphonic, 5.1 or 7.1 streams, with optimization for those formats,
that could mess the ambisonic streams. JM. Valin (the author of
Opus) wrote me that a fair amount of work would be required to optimize
the encoding (and decoding) for ambisonics. So, this is excellent news,
and I just subscribed to the Xiph mailing list. :-)
--
Marc

On Sat, 28 May 2016 10:27:06 -0600
Martin Leese  wrote:

> Hi,
> 
> There is an draft Internet standard for
> encoding Ambisonics using the Opus codec in
> an Ogg container.  Visit:
> https://tools.ietf.org/html/draft-graczyk-codec-ambisonics-00
> 
> Opus is a relatively new lossy codec defined in
> RFC 6716.  Its encapsulation inside an Ogg
> container is defined on RFC 7845.
> 
> The draft has been discussed on the Xiph
> Opus mailing list.  Unfortunately, I am not
> subscribed to that list, so only became aware
> of the draft today via a Google Alert.  To
> subscribe to the Xiph Opus list, visit:
> http://lists.xiph.org/mailman/listinfo/opus
> 
> Regards,
> Martin

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[Sursound] Ambisonics in Ogg Opus

[Martin Leese]

Hi,

There is an draft Internet standard for
encoding Ambisonics using the Opus codec in
an Ogg container.  Visit:
https://tools.ietf.org/html/draft-graczyk-codec-ambisonics-00

Opus is a relatively new lossy codec defined in
RFC 6716.  Its encapsulation inside an Ogg
container is defined on RFC 7845.

The draft has been discussed on the Xiph
Opus mailing list.  Unfortunately, I am not
subscribed to that list, so only became aware
of the draft today via a Google Alert.  To
subscribe to the Xiph Opus list, visit:
http://lists.xiph.org/mailman/listinfo/opus

Regards,
Martin
-- 
Martin J Leese
E-mail: martin.leese  stanfordalumni.org
Web: http://members.tripod.com/martin_leese/
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