A speech recognition device, a speech emphasis device, a speech recognition method, a speech enhancement method, and a navigation system

摘要

A plurality of noise suppressing units 3 for performing different noise suppressing processes on the inputted noise speech data, a speech recognizing unit 4 for performing speech recognition of the speech data in which the noise signals are suppressed, A prediction unit (1) for predicting a speech recognition rate obtained when the noise suppression unit (3) performs the noise suppression processing on the noisy speech data from the acoustic feature quantities of the speech data, and a prediction unit And a suppression method selection unit (2) for selecting a noise suppression unit (3) for performing noise suppression processing on noise sound data from a plurality of noise suppression units.