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Re: ACTION-251 - Revised 4.9.6

From: Greg Lowney <gcl-0039@access-research.org>
Date: Thu, 03 Dec 2009 13:00:52 -0800
Message-ID: <4B182704.7000701@access-research.org>
CC: UAWG list <w3c-wai-ua@w3.org>
I thought "Playback" implied prerecorded (and similarly, you could cut "Playback" as it would be implied by "Rate Adjustment for Prerecorded Content"), but I'm fine either way. 

Two additional thoughts on the actual wording.

First, I think the commas in the second bullet are incorrect. You use commas when elaborating on the noun but not when qualifying scope, as in the difference between "Users, who are blind, can..." vs. "Users who are blind can...".

Second, three of the bullets use "should" in a way that none of the other SC do. To be consistent with the rest of the document we could replace "should be able to" with "can" and "should provide" with "provides" or equivalents. 

That would give us something like:

4.9.6 Playback Rate Adjustment for Prerecorded Content.

The user can adjust the playback rate of prerecorded audio and/or video content, such that all of the following are true (Level A):

- The user can adjust the playback rate of the audio and/or video tracks to between 50% and 250% of real time.

- Speech whose playback rate has been adjusted by the user maintains pitch in order to prevent degradation of the speech quality.

- Audio and video tracks remain synchronized across this required range of playback rates.

- The UA provides a function that resets the playback rate to normal (100%).


-------- Original Message  --------
Subject: ACTION-251 - Revised 4.9.6
From: Markku Hakkinen <markku.hakkinen@gmail.com>
To: UAWG list <w3c-wai-ua@w3.org>
Date: Thu, 3 Dec 2009 14:23:23 -0500

ACTION-251 Include greg, jan comments and title change for 4.9.6

I made the changes, but did not simplify the title as Greg suggested,
as I think the title should be clear as to rate adjustment applies
only to prerecorded content.

Revised text:

4.9.6 Playback Rate Adjustment for Prerecorded Content.

The user can adjust the playback rate of prerecorded audio and/or
video content, such that all of the following are true (Level A):

- The user should be able to adjust the playback rate of the audio
and/or video tracks to between 50% and 250% of real time.

- Speech, whose playback rate has been adjusted by the user, should
maintain pitch in order to prevent degradation of the speech quality.

- Audio and video tracks remain synchronized across this required
range of playback rates.

- The UA should provide a function that resets the playback rate to
normal (100%).
Received on Thursday, 3 December 2009 21:02:00 UTC

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