(Voice User Interface) A voice-controlled application on a computer or mobile device. A VUI is more sophisticated than an interactive voice response (IVR) system. It implies a wide range of commands rather than just voicing "yes" or "no." Contrast with GUI. See voice recognition and IVR.
A VUI-based Smartphone
In 2000, Lernout & Hauspie introduced this prototype of a large vocabulary speech recognition system for a Linux PDA. It allowed continuous dictation in a handheld device for the first time. (Image courtesy of Lernout & Hauspie)