Patent ID: 6701292
Filing Date: 2004-03-02
Classification: G10L

Abstract:
A speech-recognizing apparatus for recognizing input speech, said apparatus comprising:a phoneme-standard-characteristic-pattern storage unit for storing a phoneme characteristic vector of a plurality of phoneme standard patterns in advance; an analysis unit for computing a characteristic vector for each of frames of said input speech; a vector-to-vector-distance-computing unit for computing a vector-to-vector distance between said characteristic vector for each of said frames and said phoneme characteristic vector; an average-value-computing unit for computing an average value of vector-to-vector distances of phonemes for one of said frames; a correction unit for correcting said vector-to-vector distance by subtracting said average value from said vector-to-vector distance; a word-standard-pattern storage unit for storing a word standard pattern defining a combination of said phoneme standard patterns by word models in advance; and a recognition unit for cumulating corrected vector-to-vector distances each produced by said correction unit into a cumulative vector-to-vector distance for speech inputted at different times, and comparing said cumulative vector-to-vector distance with said word standard pattern in order to recognize said input speech.