Channel Layouts are not sufficiently defined

[olivierthereaux]

Originally reported on W3C Bugzilla ISSUE-17379 Tue, 05 Jun 2012 12:00:59 GMT
Reported by Philip Jägenstedt
Assigned to

Audio-ISSUE-95 (ChannelLayouts): Channel Layouts are not sufficiently defined [Web Audio API]

http://www.w3.org/2011/audio/track/issues/95

Raised by: Philip Jägenstedt
On product: Web Audio API

https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html#ChannelLayouts

This section admits that "Other layouts can also be considered." It should be defined exactly which channel configurations must be supported.

It would also be desirable with a terminology section to include things like the channel abbreviations (M/L/R/SL/SR/C/LFE) and less obvious channel configurations like "Quad".

[olivierthereaux]

Original comment by Olivier Thereaux on W3C Bugzilla. Thu, 07 Jun 2012 15:36:43 GMT

Discussion Thread:
http://lists.w3.org/Archives/Public/public-audio/2012AprJun/thread.html#msg312

[olivierthereaux]

Original comment by Olivier Thereaux on W3C Bugzilla. Wed, 24 Oct 2012 09:03:27 GMT

This was discussed during the 2012-10-17 teleconference. It was proposed that there should be a (read-only) attribute defining the channel layout.

The attribute would have values from a pre-set list, small to begin with: mono, stereo, quad, 5.1 - plus an extra value for "other" layouts. These "known" layouts would have each channel numbered in a specified way.

This solution was preferred to a more complex solution of having the layout defined through a channel dictionary.

[joeberkovitz]

TPAC resolution: rework the "other layouts" verbiage in V1 spec to talk about the potential for other layouts in future versions.