1.1 AlternativesToVisual
| Explanation | Size | Order | Value Space | Datatype | |
| This category groups the content equivalent to the visual content but presented in a different modality. | 0..1 | Unspecified | - | - | |
| This description contains information about the modality of the equivalent resource. This is a container about alternatives to visual content as opposed to where you can get an alternative. Elsewhere in the specification information about where to access an alternative will be described, i.e., other elements will be used to reference alternatives. | |||||
1.2 Audio Description
| Explanation | Size | Order | Value Space | Datatype | |
| This category describes the audio description equivalent to the visual content. | 0..1 | Unspecified | Vocabulary | ||
| An audio description translates the visual information depicted by the resource. The description can range from a literal translation to a more expanded/explanatory description. | |||||
Vocabulary Recommendations
- standard
-
An audio description that is specified as Standard describes the content in a literal manner.
- expanded
-
An audio description that is Expanded provides audio information beyond what is represented visually.
1.3 Auditory Alternative Indicator
| Explanation | Size | Order | Value Space | Datatype | |
| Describes the auditory alternative to the visual content. | 0..1 | Unspecified | See vocabulary recommendations | Vocabulary | |
| This category describes the alternative to the visual content that are not audio descriptions. | |||||
Vocabulary Recommendations
- recorded voice
-
Characterizes the auditory alternative as being spoken by an individual.
- recorded synthetic speech
-
Characterizes the auditory alternative as being spoken by a speech synthesizer.
- daisy file
-
Indicates that the visual content has a DAISY file alternative. DAISY files are resources that contain combinations of text, full or partial audio translations of text, and navigational information.
- e-book
-
Indicates that the visual content has a e-book alternative.
1.4 Tactile Alternative
| Explanation | Size | Order | Value Space | Datatype | |
| Characterizes the visual alternative as a tangible modality. | 0..1 | Unspecified | See vocabulary recommendations | Vocabulary | |
| The alternative content is delivered using a tactile system such as Braille or some other haptic device. | |||||
Vocabulary Recommendations
- braille
-
The alternative modality is presented through a Braille system.
- haptic
-
Characterizes the auditory alternative as a haptic interface.
- other
-
Any alternative interface not categorized as haptic or Braille is classified as "other".
1.5 Text Alternative
| Explanation | Size | Order | Value Space | Datatype | |
| The content is described by text. | 0..1 | Unspecified | See vocabulary recommendations | Vocabulary | |
| The descriptions can be a literal translation of the visual content (alternative text description) or a longer descriptive adaptation (long description). | |||||
Vocabulary Recommendations
- alternative text description
-
The text translation of the visual content is literal and does not contain any extra information not depicted by the visual content.
- long description
-
The textual translation of the visual content is longer and may contain additional descriptive or complimentary text content.