AccessiWeb 2.2 - Rule 4.18.1

Summary

This test consists in checking whether each audio sequence played automatically and defined with an object, an embed, an applet or a bgdound tag can be stopped by the user or the volume can be shutdowned

Business description

Criterion : 4.18

Test : 4.18.1

Test description :

Does each audio sequence that is played automatically via an object, applet, embed tag, a javascript code or bgsound property pass one of the conditions below?

  • The audio sequence lasts less than or equal to 3 seconds
  • The audio sequence can be stopped by an action initiated by the user
  • The volume of the audio sequence can be controlled by the user independently from the system volume control.

Level : Bronze

Technical description

Scope : page

Decision level : semidecidable

Algorithm

Selection

Selection1 : All the embed, object, applet and bgsound tags (embed, object, bgsound, applet)

Process

The selection handles the process.

For each occurence of the Selection1 raise a MessageA

MessageA : Check Manually the elements
  • code :ManualCheckOnElements
  • status: NMI
  • parameter : snippet
  • present in source : yes

Analysis

Not Applicable

Selection is empty (The page has neither object, nor applet, nor bgsound, nor embed tag)

Pre-qualified

The selection is not empty

Notes

We detect the elements of the scope of the test to determine whether the test is applicable.

On latest webdev data set (2013-10-30, 78,000 pages), the test scope (embed, applet, bgsound, object) has been found on 6804 pages, i.e on 8.7% of the pages