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Re: Meaning of audio track kind 'descriptions'

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Wed, 22 Jun 2011 10:16:49 +1000
Message-ID: <BANLkTinQOFvkPkopJggWyQG-0ye0WzWzYA@mail.gmail.com>
To: Mark Watson <watsonm@netflix.com>
Cc: David Singer <singer@apple.com>, Bob Lund <B.Lund@cablelabs.com>, HTML Accessibility Task Force <public-html-a11y@w3.org>
On Wed, Jun 22, 2011 at 3:32 AM, Mark Watson <watsonm@netflix.com> wrote:
> I think this is a matter of opinion and eventually gets resolved through
> feedback from real users. I doubt *users* want to continuously adjust the
> relative volume of the tracks, so we're talking about automatic client
> capabilities, perhaps based on user preference settings, which do the
> ducking. But still these have only one degree of freedom (relative volume of
> the two tracks), whereas the content creator has many (relative volume of
> the many source tracks).
> So I think it's equally unlikely that client-side ducking is always better
> than professional mixing.

Well, we are not talking about how a video's main audio track is
composed - of course a professional sound editor will create a better
mix of the many input channels that are necessary to be synchronized.
We are only talking about how a human or computer-created voice that
is spoken over the top of an existing mix stands out in front of that
mix. This is a simple matter of turning the main audio track
quieter/louder (i.e. ducking). If I as a user cannot discern the
description voice over the top of the main mix, then I turn the main
mix down. Surely that is always better than a fixed mix of the audio
description with the main audio where I am dependent on how well the
person that does the sound mix can hear the voice in front of the main
audio mix.

Received on Wednesday, 22 June 2011 00:17:44 UTC

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