Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Natural Speech Output(also: Recorded Speech, Digitized Speech)
- Speech output produced from digital recordings of actual human speakers, as opposed to artificially generated synthetic speech. Natural speech output preserves the prosody, intonation, emotion, and vocal quality of the original speaker, making it generally more pleasant and…
- Neural Vocoder
- A deep-learning model that synthesises audio waveforms from intermediate acoustic representations such as mel-spectrograms or discrete speech units. Examples include HiFi-GAN, WaveNet, WaveGlow, and SoundStream. Neural vocoders have largely replaced classical signal-processing…
- Non-Verbal Vocalization(also: Non-Speech Vocalization, Vocal Gesture, Non-speech Vocalisation)
- A sound produced by the voice that is not a spoken word, such as a sustained vowel sound ("Ahhhhh"), hum, or other vocal noise. In assistive technology and alternative input contexts, non-verbal vocalizations can serve as continuous control signals for cursor movement or other…
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