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Re: sound on event: a possible way?

From: Charles McCathieNevile <charles@w3.org>
Date: Thu, 5 Dec 2002 23:55:11 -0500 (EST)
To: Jonathan Chetwynd <j.chetwynd@btinternet.com>
cc: David Poehlman <poehlman1@comcast.net>, <w3c-wai-ig@w3.org>
Message-ID: <Pine.LNX.4.30.0212052338440.30913-100000@tux.w3.org>

Being able to visually navigate pages and get sound feedback as you move
seems valuable. This is a bit different to what most visually impaired people
do which is navigate by sound and structure alone. So as Jonathan says, it
implies different requirements.

It seems that SVG or XHTML, and a bit of SMIL, are a likely way to solve this
easily, although it isn't a trivial problem. It could of course be done more
or less just in SMIL for visual presentation, but it would seem a bit
artificial. (You define layout regions for each image or letter in peepo, and
then you use interaction events to play a sound - less ideal than the
integrated approach).

The SVG 1.2 working draft says

  The SVG Working Group may produce a W3C Note which defines an SVG+SMIL
  profile, similar to the XHTML+SMIL profile [XHTML+SMIL]. Alternatively, SVG
  could include more of the SMIL elements within the SVG namespace (e.g. the
  par, seq, audio and video elements).

-- http://www.w3.org/TR/SVG12/#xml-integration

There are demos of doing this that I have seen, although I couldn't find one
in 15 minutes of looking. Maybe X-smiles has one...



On Thu, 5 Dec 2002, Jonathan Chetwynd wrote:

>unfortunately onclick does not suit our users, ie how do you click a
>link which has an associated sound, by onmouseover, having to learn to
>click a separate symbol takes up huge amounts of screen, visit peepo
>and imagine where would the extra symbols fit, we are advised that 80
>pixels is a minimum size for a graphic.
>On Wednesday, December 4, 2002, at 02:11 PM, David Poehlman wrote:
>> on click perhaps?
>> ----- Original Message -----
>> From: "Jonathan Chetwynd" <j.chetwynd@btinternet.com>
>> To: <w3c-wai-ig@w3.org>
>> Sent: Wednesday, December 04, 2002 8:21 AM
>> Subject: sound on event: a possible way?
>> http://www.peepo.com/w3/sound-on-event/test.html
>> could those following this thread please comment on this method*?
>> thanks
>> Jonathan
>> *active ingredient:
>> link.innerHTML= '<object><embed src="' + thisSound + '.wav" width="0.1"
>> height="0.1" /></object>'
>> this surprisingly updates itself, allowing sound on event

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, 5 December 2002 23:55:13 UTC

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