Version 2.0 Audio Rules

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Contents

Audio Rule Details

Audio Rule 1: Audio must/should have alternative

Property Value(s) Up To Date
Definition Prerecorded audio must/should have caption or text trascription of the audio content yes
Summary Audio must/should have alternative yes
Purpose
  • Captions and text transcripts provide a means for people cannot hear the audio to understand the audio content
yes
Rule ID AUDIO_1 yes
NLS Rule ID Audio Rule 1 yes
Techniques
  • Various techniques to add captions based on the audio format and media players you are supporting, please see your technology specific requirements for captions
  • The HTML5 video element is attempting to make it easier to support audio descriptions through the use of the text track element
  • Use aria-describedby attribute to point to a text description of the audio only content
yes
Manual Checks none yes
Scope Element yes
WCAG 2.0 Primary 1.2.1 yes
WCAG 2.0 Related
  • 1.2.2
  • 1.2.4
  • 1.2.9
yes
Language Dependency empty string yes
Rule Category Audio yes
Target Resources
  • embed
  • object
  • audio
yes
Target Resources Description OBJECT, EMBED and VIDEO elements yes
Resource Properties
  • tag_name
  • name
  • type
  • src
  • alt
yes

Audio Rule 1: Rule Result Messages

Property Value(s) Up To Date
All Pass: Singular Audio element has either a caption or a text transcript yes
All Pass: Plural All %N_P audio elements have either captions or a text transcript yes
Manual Check: Singular Verify the element contains audio only content and if it is audio only make sure it has either captions or text transcript of the audio content yes
Manual Check: Plural Verify if any of the %N_MC elements are audio only, if any are audio only make sure they have either an captions or text transcripts of the audio yes
Some Fail  %N_F out of %N_T audio elements do NOT have captions or text transcripts yes
All Fail: Singular Audio element does not have captions or text transcripts yes
All Fail: Plural All %N_F audio elements do NOT have captions or text transcripts yes
Corrective Action: Singular add captions or text transcript to audio element yes
Corrective Action: Plural add captions or text transcripts to each of the %N_F the audio elements yes
Not Applicable No visible OBJECT, EMBED and VIDEO elements only elements found on this page that could be used for audio only yes

Audio Rule 1: Node Result Messages

Property Value(s) Up To Date
Pass 1  %1 element has caption yes
Pass 2  %1 element has a text transcript yes
Pass 3 empty string yes
Manual Check 1 Verify the %1 audio element has captions or text transcript yes
Manual Check 2 Verify the %1 element is audio only, if it is audio only verify that it has captions or text transcript yes
Manual Check 3 empty string yes
Corrective Action 1 Add captions or text transcript to %1 element yes
Corrective Action 2 empty string yes
Corrective Action 3 empty string yes
Hidden (i.e. thru css)  %1 element is not visible on screen yes
Presentation (i.e. role=presentation) empty string yes
Other empty string yes

Audio Rule 2: Audio must/should have alternative

Property Value(s) Up To Date
Definition Prerecorded audio must/should have caption or text trascription yes
Summary Audio must/should have alternative yes
Purpose
  • Text transcripts provide a means for people cannot hear the audio to understand the audio content
yes
Rule ID AUDIO_2 yes
NLS Rule ID Audio Rule 2 yes
Techniques
  • Use aria-describedby attribute to point to a text description of the audio only content
yes
Manual Checks none yes
Scope Element yes
WCAG 2.0 Primary 1.2.9 yes
WCAG 2.0 Related
  • 1.2.1
yes
Language Dependency empty string yes
Rule Category Audio yes
Target Resources
  • embed
  • object
  • audio
yes
Target Resources Description OBJECT, EMBED and VIDEO elements yes
Resource Properties
  • tag_name
  • name
  • type
  • src
  • alt
yes

Audio Rule 2: Rule Result Messages

Property Value(s) Up To Date
All Pass: Singular Audio element has text transcript yes
All Pass: Plural All %N_P audio elements have text transcript yes
Manual Check: Singular Verify the element contains audio only content and if it is audio only make sure it has text transcript of the audio content yes
Manual Check: Plural Verify if any of the %N_MC elements are audio only, if any are audio only make sure they have text transcripts of the audio yes
Some Fail  %N_F out of %N_T audio elements do NOT have text transcripts yes
All Fail: Singular Audio element does not have text transcripts yes
All Fail: Plural All %N_F audio elements do NOT have text transcripts yes
Corrective Action: Singular add text transcript to audio element yes
Corrective Action: Plural add text transcripts to each of the %N_F the audio elements yes
Not Applicable No visible OBJECT, EMBED and VIDEO elements only elements found on this page that could be used for audio only yes

Audio Rule 2: Node Result Messages

Property Value(s) Up To Date
Pass 1  %1 element has a text transcript yes
Pass 2 empty string yes
Pass 3 empty string yes
Manual Check 1 Verify the %1 audio element has text transcript yes
Manual Check 2 Verify the %1 element is audio only, if it is audio only verify that it has text transcript yes
Manual Check 3 empty string yes
Corrective Action 1 Add text transcript to %1 element yes
Corrective Action 2 empty string yes
Corrective Action 3 empty string yes
Hidden (i.e. thru css)  %1 element is not visible on screen yes
Presentation (i.e. role=presentation) empty string yes
Other empty string yes

new rule nls id : new rule summary

Property Value(s) Up To Date
Definition definition NO
Summary summary NO
Purpose
  • purpose 1
  • purpose 2
  • purpose 3
  • purpose 4
NO
Rule ID rule id NO
NLS Rule ID rule nls id NO
Techniques
  • technique 1
  • technique 1 url
  • technique 2
  • technique 2 url
  • technique 3
  • technique 3 url
  • technique 4
  • technique 4 url
NO
Manual Checks
  • manual check 1
  • manual 1 url
  • manual check 2
  • manual 2 url
  • manual check 3
  • manual 3 url
  • manual check 4
  • manual 4 url
NO
Scope Element or Page NO
WCAG 2.0 Primary X.X.X NO
WCAG 2.0 Related
  • Y.Y.Y
  • Z.Z.Z
NO
Language Dependency empty string NO
Rule Category Audio NO
Target Resources
  • element 1
  • element 2
NO
Target Resources Description target resource nls description NO
Resource Properties
  • property 1
  • property 2
NO

new rule nls id : Rule Result Messages

Property Value(s) Up To Date
All Pass: Singular empty string NO
All Pass: Plural empty string NO
Manual Check: Singular empty string NO
Manual Check: Plural empty string NO
Some Fail empty string NO
All Fail: Singular empty string NO
All Fail: Plural empty string NO
Corrective Action: Singular empty string NO
Corrective Action: Plural empty string NO
Not Applicable empty string NO

new rule nls id : Node Result Messages

Property Value(s) Up To Date
Pass 1 empty string NO
Pass 2 empty string NO
Pass 3 empty string NO
Manual Check 1 empty string NO
Manual Check 2 empty string NO
Manual Check 3 empty string NO
Corrective Action 1 empty string NO
Corrective Action 2 empty string NO
Corrective Action 3 empty string NO
Hidden (i.e. thru css) empty string NO
Presentation (i.e. role=presentation) empty string NO
Other empty string NO
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