Test Case sc1.4.6_l3_001: Audio contrast: foreground audio content only

Formal Metadata

Formal Metadata
TitleAudio contrast: foreground audio content only
DescriptionDocument containing a link to an audio file with foreground speaker.
CreatorBenToWeb (Reinhard.Ruemer@…)
RightsCopyright BenToWeb 2004-2007
LanguageEnglish
Date2005-08-17
Statusvalidated

Technologies and Features

Technologies are markup languages or data formats. If the technology is a markup language, “features” refers to elements and attributes.

XHTML™ 1.0 The Extensible HyperText Markup Language (Second Edition)

XHTML™ 1.0 The Extensible HyperText Markup Language (Second Edition)

Test Data

Purpose

The document is intended to pass because it contains no background sounds. Only the individual perception of the audio contrast is tested here.

Test Modes

Three or more accessibility experts.

Test Files

Test file.

TCDL Data

sc1.4.6_l3_001 (XML).

Rules

“Rules” refer to success criteria in WCAG 2.0, checkpoints in WCAG 1.0 and similar requirements.

Primary Rules

The test case passes (line 9, column 37) the following success criterion: http://www.w3.org/TR/2007/WD-WCAG20-20070517/Overview.html#visual-audio-contrast-noaudio.

Functional Outcome

There is no background sound that interferes with the understanding of foreground speech.

Technical Comment

This test case maps to technique G56: Mixing audio files so that non-speech sounds are at least 20 decibels lower than the speech audio content.

Secondary Rules

Secondary Rule (WCAG 2.0 - April 2006 Working Draft (Last Call))

The test case passes (line 9, column 37) the following success criterion: http://www.w3.org/TR/2006/WD-WCAG20-20060427/guidelines.html#visual-audio-contrast-noaudio.

Functional Outcome

There is no background sound that interferes with the understanding of foreground speech.

Technical Comment

Online version: sc1.4.4_l3_003.

Secondary Rule (WCAG 2.0 - June 2005 Working Draft)

The test case passes (line 9, column 39) the following success criterion: http://www.w3.org/TR/2006/WD-WCAG20-20050630/#visual-audio-contrast-noaudio.

Functional Outcome

No background sound.