- From: Jason White <jasonw@ariel.ucs.unimelb.edu.au>
- Date: Tue, 14 Dec 1999 12:45:09 +1100 (EST)
- To: Web Content Accessibility Guidelines <w3c-wai-gl@w3.org>
While I agree in large measure with Eric's comments, one point of clarification should be noted: the guidelines do take account of sound files (namely in checkpoint 1.1), but, on my interpretation, these are not presently subject to the synchronisation requirement of checkpoint 1.4. Charles has argued (and I agree with him) that such synchronisation is necessary. This is particularly the case, as Eric rightly notes, in respect of long, changing sounds and audio streams. Naturally, one can dispute the priority level. To what extent is it beneficial, for those with limited hearing, to have the sounds synchronised with the textual transcript, and to what degree does it hinder access if this is not so? At present, as I read the guidelines (and I do so against the background of their history) the textual equivalents of audio files (where these are not part of a "multimedia presentation"--that is to say, where they are not accompanied by visual content) need not be synchronised with the sound. Charles has argued persuasively that such a requirement should be added in a future revision or as an erratum.
Received on Monday, 13 December 1999 20:45:53 UTC