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RE: 1.2: proposed rewording

From: Charles McCathieNevile <charles@w3.org>
Date: Thu, 12 Sep 2002 04:40:37 -0400 (EDT)
To: Gregg Vanderheiden <gv@trace.wisc.edu>
cc: "'john_slatin'" <john_slatin@forum.utexas.edu>, <w3c-wai-gl@w3.org>
Message-ID: <Pine.LNX.4.30.0209120434050.7358-100000@tux.w3.org>

Well, sound track constraints are (like what is sufficiently artistic to
merit ignoring accessibility considerations) subjective.

The success criteria should be that the resulting soundtrack carries
sufficient information to understand the content presented without visual
cues.

Techniques should be noted for squeezing enough into a very small space. But
in some cases it simply won't be possible to make the content accessible by
sound alone. This doesn't mean that content should pass the checkpoint by
default, it means the content should fail the checkpoint by default (although
we should look for all possible techniques to make the content accessible so
it meets the fundamental success criterion: people can use it regardless of
disability).

just my 2 cents worth.

Chaals

On Wed, 11 Sep 2002, Gregg Vanderheiden wrote:

>I like this -but we can't leave the limits out of the checkpoint and
>just put them in a note.
>
>
>
>Hmmm
>
>
>
>Maybe..something like this. (Edits marked in curly brackets.)
>
>
>
>1.      an audio description is provided of all significant visual
>information in scenes, actions and events that cannot be perceived from
>the sound track alone {to the extent possible given sound track
>constraints}.
>
>Note: When adding audio description to existing materials, the amount of
>information conveyed through audio description is constrained by the
>{amount of blank space available in} existing audio track.  It may also
>be impossible or inappropriate to freeze the audio/visual program to
>insert additional auditory description.
>
>
>Gregg
>
>------------------------------------
>Gregg Vanderheiden Ph.D.
>Ind Engr - Biomed - Trace, Univ of Wis
>gv@trace.wisc.edu
>
>
>
>-----Original Message-----
>From: w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org] On
>Behalf Of john_slatin
>Sent: Thursday, September 05, 2002 2:25 PM
>To: w3c-wai-gl@w3.org
>Subject: 1.2: proposed rewording
>
>
>
>Current wording for checkpoint 1.2, success criterion 1, minimum level:
>1. an audio description is provided of all visual information in scenes,
>actions and events (that can't be perceived from the sound track).
>
>* The audio description should include all significant visual
>information in scenes, actions and events (that can't be perceived from
>the sound track) to
>
>the extent possible given the constraints posed by the existing audio
>track (and constraints on freezing the audio/visual program to insert
>additional
>
>auditory description).
>
>Proposed wording
>
>1.      an audio description is provided of all significant visual
>information in scenes, actions and events that cannot be perceived from
>the sound track alone.
>
>Note: When adding audio description to existing materials, the amount of
>information conveyed through audio description is constrained by the
>existing audio track.  It may also be impossible or inappropriate to
>freeze the audio/visual program to insert additional auditory
>description.
>
>Comment:
>I have moved the word "significant" from the first line of the bulleted
>item into the success criterion itself, then deleted the first part of
>the bulleted item since it was nearly identical to the success
>criterion.  I've also tried to clarify what we say about the constraints
>on audio description, by (a) noting that this note applies to audio
>description *added to existing material* (i.e., material that doesn't
>make room for audio description in the original script); I also broke up
>the sentence and got rid of the parenthetical notes.  It's my hope that
>the result is more closer to the kind of practice we're proposing for
>4.1.
>
>On the other hand, I may have omitted or obscured something essential
>here...
>
>John
>
>
>
>John Slatin, Ph.D.
>Director, Institute for Technology & Learning
>University of Texas at Austin
>FAC 248C, Mail code G9600
>Austin, TX 78712
>ph 512-495-4288, f 512-495-4524
>email  <mailto:jslatin@mail.utexas.edu> jslatin@mail.utexas.edu
>web  <http://www.ital.utexas.edu> http://www.ital.utexas.edu
>
>
>

-- 
Charles McCathieNevile  http://www.w3.org/People/Charles  tel: +61 409 134 136
SWAD-E http://www.w3.org/2001/sw/Europe ------------ WAI http://www.w3.org/WAI
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Received on Thursday, 12 September 2002 04:40:40 GMT

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