| 摘要 |
PROBLEM TO BE SOLVED: To provide technology for suppressing incorrect recognition by appropriately asking back, when recognizing voice of a speaker. SOLUTION: A voice recognition device is equipped with: a voice input means for inputting voice and converting it to voice data; an utterance section extracting means for extracting an utterance section; a voice analysis means for calculating a time sequence of a feature quantities of the voice; a word likelihood calculating means for calculating likelihood of each candidate word group; a sentence likelihood calculating means for calculating likelihood of each candidate sentence group; a reliability calculating means for calculating reliability of each candidate word group; a sentence specifying means for specifying a sentence which the speaker speaks, based on the reliability of the word included in the sentence; a first asking-back judgment means for judging whether the asking-back is required or not, based on the reliability of the word included in the specified sentence; and an asking-back means for asking back to the speaker, when it is judged that the asking-back to the speaker is required. COPYRIGHT: (C)2008,JPO&INPIT
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