| 摘要 |
PROBLEM TO BE SOLVED: To convert input voice into a recognition result easily understood by a user and output it. SOLUTION: In this voice recognition device, phoneme information as an acoustic feature of each phoneme is previously stored in an acoustic model storage section. A word, reading way of this word, difficulty level of this word, and a word having the same meaning as this word and different difficulty level from it are previously stored in association with each other in a recognition dictionary storage section. A linguistic feature is previously stored in a language model storage section. The acoustic feature of voice information is determined using the voice information, similar phoneme information is retrieved from the acoustic model storage section using the acoustic feature of the voice information determined by a voice analysis section, and a word is retrieved from the recognition dictionary storage section using one or more retrieved pieces of phoneme information. Using the retrieved word and the linguistic feature of a language model storage section, a recognition result before conversion is estimated, the recognition dictionary storage section is referred, and a word of a difficulty level closest to a target difficulty level is selected from words having the same meaning as the word of the recognition result before conversion. COPYRIGHT: (C)2011,JPO&INPIT
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