Techniques for WCAG 2.0

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F23: Failure of 1.4.2 due to playing a sound longer than 3 seconds where there is no mechanism to turn it off


Applies to all technologies except those for voice interaction.

This failure relates to:


This describes a failure condition for Success Criteria involving sound. If sound does not turn off automatically within 3 seconds and there is no way to turn the sound off then Success Criterion 1.4.2 would not be met. Sounds that play over 3 seconds when there is no mechanism to turn off the sound included in the content would fall within this failure condition.


Failure Example 1

  • A site that plays continuous background music

Failure Example 2

  • A site with a narrator that lasts more than 3 seconds before stopping, and there is no mechanism to stop it.


No resources available for this technique.

(none currently listed)



  1. Check that there is a way in a Web page to turn off any sound that plays automatically for more than three seconds.

Expected Results

Techniques are Informative

Techniques are informative—that means they are not required. The basis for determining conformance to WCAG 2.0 is the success criteria from the WCAG 2.0 standard—not the techniques. For important information about techniques, please see the Understanding Techniques for WCAG Success Criteria section of Understanding WCAG 2.0.