Test Case sc1.4.4_l3_008: Audio contrast: text read by screenreader, high background audio level

Formal Metadata

Formal Metadata
TitleAudio contrast: text read by screenreader, high background audio level
DescriptionDocument containing text (should be read by a screenreader) and a multimedia object with high background audio level. Testcases sc1.4.4_l3_008-sc1.4.4_l3_010 differ in the way the multimedia object has been included. The multimedia object is hidden, no possibility to turn off the sound via programmed user interface is given.The non XHTML standard embed element plays the background sound.
CreatorBenToWeb (Daniela.Ortner@…)
RightsCopyright BenToWeb 2005-2007
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)

Microsoft DHTML reference

Microsoft DHTML reference

Feature: embed (namespace: undefined) .

Technical specification: EMBED Element | embed Object (Internet Explorer - DHTML) .

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

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

Feature: object (namespace: http://www.w3.org/1999/xhtml) .

Technical specification: Generic inclusion: the OBJECT element .

Feature: p (namespace: http://www.w3.org/1999/xhtml) .

Technical specification: Paragraphs: the P element .

Test Data

Purpose

This test case is intended to fail, because there is no mechanism to turn off the sound. If the background sound is played (Netscape 7.1 does / Firefox 1.0.6, Opera 7.51 does not) it is to loud to understand the speech output - This testcase should be tested with different browsers.

Test Modes

Three or more accessibility experts.

Test Files

Test file.

TCDL Data

sc1.4.4_l3_008 (XML).

Rules

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

Primary Rules

The test case fails the following success criterion at line 8, column 10: http://www.w3.org/TR/2006/WD-WCAG20-20060427/guidelines.html#visual-audio-contrast-noaudio.

The test case fails the following success criterion at line 16, column 18: http://www.w3.org/TR/2006/WD-WCAG20-20060427/guidelines.html#visual-audio-contrast-noaudio.

Functional Outcome

Background sound can not be turned off and is to loud to understand the speech reader

Technical Comment

The embed element works with MS IE and attribute hidden="true" (tested: Firefox 1.0.6, IE 6.0, Netscape 7.1, Opera 7.51)

Secondary Rules

Secondary Rule (WCAG 2.0 - June 2005 Working Draft)

The test case fails the following success criterion at line 8, column 10: http://www.w3.org/TR/2006/WD-WCAG20-20050630/#visual-audio-contrast-noaudio.

The test case fails the following success criterion at line 16, column 18: http://www.w3.org/TR/2006/WD-WCAG20-20050630/#visual-audio-contrast-noaudio.

Functional Outcome

Background sound can not be turned off and is to loud to understand the speech reader

Technical Comment

The embed element works with MS IE and attribute hidden="true" (tested: Firefox 1.0.6, IE 6.0, Netscape 7.1, Opera 7.51)

Secondary Rule (WCAG 2.0 - February 2005 Editor's Draft)

The test case passes (line 16, column 18) the following success criterion: http://www.w3.org/WAI/GL/WCAG20/WD-WCAG20-20050211/#4.1_use-spec-document-backward-compat-violations.

Functional Outcome

The file is valid.

Technical Comment

The embed is widely supported but not part of the W3C's DTD for XHTML, so the file uses a custom DTD to ensure valid code.