Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Unit Selection Synthesis(also: Concatenative Unit Selection, Unit Selection TTS)
- A text-to-speech synthesis approach that generates speech by selecting and concatenating variable-length segments of pre-recorded human speech from a large database to match the input text. Unit selection synthesizers generally produce more natural-sounding speech than…
- Universal Background Model(also: UBM)
- A Universal Background Model (UBM) is a large Gaussian Mixture Model trained on speech from many speakers to represent speaker-independent acoustic characteristics. The UBM serves as a reference distribution against which individual speaker models are compared, typically using…
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