Citando Marc Lavallée <m...@hacklava.net>:

I changed the subject.



Martin, I like your proposal because the chunks in WAV files (as metadata in source files), could be transferred to transcoded files an used by players (for example by web browsers). That would enable the distribution of multi-channel streams in their native format (Ambisonics, Quad, 5.1, 7.1), with stereo compatibility.



In the IETF proposal , there's also the idea of including an optional non-diegetic stereo track (or stream); I'm not aware of any format with a similar feature (as part of the format specification).

- - - - 

The idea was possibly adopted from the .TBE format (10 channels), although Facebook supports Ambix-9 + 2 (11 channels) as well. (By now.)

But be aware that non-diegetic stereo is not a multichannel downmix: It is a second audio stream, usually used as comment or background (music) track. 

Best,

Stefan

- - - - -

Marc





 Le 2018-08-02 à 12:37 PM, Martin Leese a écrit :

Aaron Heller wrote:

There's a IETF proposal from folks at Google for "Ambisonics in an Ogg Opus

 Container", based on



  Nachbar, et al., Ambix - A Suggested Ambisonics Format. 3rd International

 Symposium on Ambisonics and Spherical Acoustics, Lexington, KY (2011)



 and the idea of a default stereo decode from Etienne Deleflie's Universal

 Ambisonic work

I would instead recommend my proposal for a

 stereo decode described at:

 http://members.tripod.com/martin_leese/Audio/stereo_mix_proposal.html

 http://members.tripod.com/martin_leese/Audio/StereoMix_chunk.html



 This can be used not only in Ambisonic files

 (see Example 3 on the Stereo Mix chunk page),

 but also in non-Ambisonic multi-channel files.

 This makes it more likely to be adopted.



 Regards,

 Martin

_______________________________________________

 Sursound mailing list

surso...@music.vt.eduhttps://mail.music.vt.edu/mailman/listinfo/sursound[1] - unsubscribe here, edit account or options, view archives and so on.



Ligações:
---------
[1]
-------------- next part --------------
An HTML attachment was scrubbed...
URL: 
<https://mail.music.vt.edu/mailman/private/sursound/attachments/20180802/37299849/attachment.html>
_______________________________________________
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit 
account or options, view archives and so on.

Reply via email to