Test for WCAG success criterion 1.4.2: Audio Control

[hannolans]

http://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-dis-audio.html
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.

Applicable

Page with

• audio element
• video element with sound
• object with sound
• embed with sound

Not applicable

Page without video or audio content. That is in any case a page without any of the following elements:

• video
• audio
• object
• embed

Failure

• F23 (Test for Technique F23: playing a sound longer than 3 seconds where there is no mechanism to turn it off #247): Playing a sound longer than 3 seconds where there is no mechanism to turn it off

Techniques

• G60 (Test for Technique G60: Playing a sound that turns off automatically within three seconds #246): Playing a sound that turns off automatically within three seconds
• G170 (Test for Technique G170: Control near the beginning of the Web page that turns off sounds that play automatically #243): Providing a control near the beginning of the Web page that turns off sounds that play automatically
• G171 (Test for WCAG technique G171: Playing sounds only on user request #208): Playing sounds only on user request

Relationship

• F23 is kind of counterpart of G60+G170
• If G171 is used, G60, G170 and F23 is not applicable
• First implement G171