[ttml2] Add support for Audio Description requirements

nigelmegitt has just created a new issue for 
https://github.com/w3c/ttml2:

== Add support for Audio Description requirements ==
Add support for Audio Description. See also the [AD Requirements wiki 
page.](https://github.com/w3c/ttml2/wiki/Audio-Description-Requirements)

* [ ] Define an audio processing framework, to allow audio level and 
pan to be modified, and additional audio resources to be mixed in, 
according to the TTML content element hierarchy.
* [ ] Define a gain style attribute
* [ ] Define a pan style attribute
* [ ] Check that the appropriate continuous animation interpolation 
calculation algorithms for audio are present. (may need addition of 
exponential interpolation calculation mode)
* [ ] Define an attribute that controls the playback "in-time" within 
a remote referenced audio, to support requirement ADR6 
* [ ] Define feature designators
* [ ] Update schema to include new attributes
* [ ] Check and if necessary update TTML requirements document


Please view or discuss this issue at 
https://github.com/w3c/ttml2/issues/195 using your GitHub account

Received on Thursday, 6 October 2016 13:32:59 UTC