VOICE RECOGNITION DEVICE, VOICE EMPHASIS DEVICE, VOICE RECOGNITION METHOD, VOICE EMPHASIS METHOD, AND NAVIGATION SYSTEM

摘要

This invention is provided with: a plurality of noise suppression units (3) for performing noise suppression processes of mutually different methods on inputted noise audio data; a voice recognition unit (4) for performing voice recognition on voice data in which noise signals are suppressed; a prediction unit (2) for predicting, from acoustic feature quantities of inputted noise audio data, the voice recognition rate obtained when a noise suppression process is performed on the noise audio data by each of the plurality of noise suppression units (3); and a suppression method selection unit (2) for selecting, on the basis of the predicted voice recognition rates, the noise suppression unit (3) performing a noise suppression process on the noise audio data from the plurality of noise suppression units.