THE METHOD AND APPARATUS FOR RECOGNIZING VOICE

摘要

A voice recognition method and an apparatus thereof are provided to calculate the reliability on a grapheme string of recognized grapheme, and improve the voice recognition performance by using the reliability. A phoneme interval detecting unit(404) analyzes voice feature data outputted from a voice feature extracting unit(402), and then determines the boundary between phonemes to detect a phoneme interval. A reliability decision unit(406) compares the pattern of the detected phoneme intervals with phonemes belonging to a pre-defined phoneme model(416) to calculate the similarity. A reliability-based phoneme error model(418) stores the phoneme recognition probability distribution which is obtained by training whether an inputted voice phoneme is recognized as any kind of phoneme, in advance.