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RE: Use of Audio Interferes with Screenreaders?

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From: Richard Sweet
Date: Feb 6, 2004 6:31AM

I'm not an expert on Flash, so excuse that my ignorance on technical issues!

I would encourage you to use the audio narration from an accessiblity point
of view. Many users have disabilites (other than visual impairment) that
make an audio track beneficial. But addressing this particular issue, why
does the narrator have to speak 'automatically'? Could you not have a button
(or similar) to start it? Might not be ideal from a usability point of view,
but could have the advantage of allowing all users to 'repeat' the page's
commentary. Screen-reader users could then choose whether to read the
alternate text or listen to the narration. I suspect many would choose the
latter, as a pleasant break from the electronic voice!

A better alternative might be to provide an option right at the start of the
presentation to 'mute' the voiceover, indicating that this is recommended
for screenreaders.

A last resort: at the start, suggest that screenreader users hit 'Escape' on
loading a new page to cancel the reading. (They can still navigate around
either during or after the narration if required).

Richard


-----Original Message-----
From: Thomas Walczyk [mailto: <EMAIL REMOVED> ]
Sent: 05 February 2004 21:53
To: ' <EMAIL REMOVED> '
Subject: Use of Audio Interferes with Screenreaders?


Hello!

Are there any guidelines or best practices concerning how audio may be
incorporated without hindering the use of a screenreader (such as JAWS)? I
am working on a web-based training course that includes audio narration. In
certain instances involving Flash animation with embedded audio, the
narrator automatically begins to speak when the user enters the page.
(Unfortunately, technical specifications limit the course to Flash 5 rather
than Flash MX.)

Although we provide audio transcripts and alternate text description of the
animation, there is still a problem in that both JAWS and the narrator are
speaking at the same time.

* Could a user experienced with JAWS adequately deal with this
situation?

* Would this situation (a screenreader and an audio file speaking at
the same time) be a violation of any of the WAI conformance levels? I could
not find anything in the standards that directly addresses this issue.

Many thanks!

--Tom--

--Tom Walczyk--
Senior Instructional Designer
Car