Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Visual Vocabulary(also: Picture-Based Vocabulary, Icon Vocabulary)
- A collection of words or concepts represented through images, icons, or pictorial symbols rather than text alone. Visual vocabularies are widely used in augmentative and alternative communication (AAC) systems to support people who have difficulty with text-based language,…
- Voice Output Communication Aid(also: VOCA, Speech Output Device)
- An electronic augmentative and alternative communication (AAC) device that produces synthesized or digitized speech output when a user selects symbols, words, or phrases. VOCAs range from simple single-message devices to sophisticated systems with extensive vocabularies and…
- Voice banking(also: Voice preservation, Speech banking)
- The process of recording and storing samples of a person's natural voice so that a synthetic version can be created for future use with text-to-speech systems. Voice banking is particularly important for people with degenerative conditions like ALS or motor neuron disease who…
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