Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- AI-Generated Speech(also: Synthetic Speech, AI Speech)
- Speech audio produced by artificial intelligence systems — typically neural text-to-speech or voice cloning models — rather than recorded from a human speaker. Deaf and hard-of-hearing content creators increasingly use AI-generated speech to add spoken-language tracks to signed…
- Acoustic Analysis(also: Acoustic Signal Analysis)
- The computational examination of sound signals to extract measurable properties such as duration, fundamental frequency (pitch), intensity, spectral characteristics, and formant structure. In accessibility and clinical contexts, acoustic analysis is used to objectively assess…
- Acoustic Model(also: AM)
- An acoustic model is the component of an automatic speech recognition (ASR) system that maps short segments of audio (typically 10–25 ms frames of spectral features) to the linguistic units that produced them — most commonly phonemes or sub-phonetic states. Classical acoustic…
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