1.4.2: Audio Control [A]

Description Sufficient Techniques Advisory Techniques Failures Notes

Description

If any audio on a Web page plays automatically for more than 3 seconds, either a mechanism is available to pause or stop the audio, or a mechanism is available to control audio volume independently from the overall system volume level.

Sufficient Techniques

Sufficient Techniques for Success Criterion 1.4.2

Note: Other techniques may also be sufficient if they meet the success criterion. See Understanding Techniques.

• G60: Playing a sound that turns off automatically within three seconds
• G170: Providing a control near the beginning of the Web page that turns off sounds that play automatically
• G171: Playing sounds only on user request

Advisory Techniques

Advisory Techniques for Success Criterion 1.4.3

• G156: Using a technology that has commonly-available user agents that can change the foreground and background of blocks of text

Failures

Failures for Success Criterion 1.4.2

• F23: Failure of 1.4.2 due to playing a sound longer than 3 seconds where there is no mechanism to turn it off
• F93: Failure of Success Criterion 1.4.2 for absence of a way to pause or stop an HTML5 media element that autoplays

Notes