| 摘要 |
PROBLEM TO BE SOLVED: To provide speech recognition technology for suppressing degradation in recognition performance by reducing comparison object patterns which are actually used, in a voice recognition by a large amount of comparison object patterns. SOLUTION: In a dictionary section 312, there are a plurality of kinds of dictionaries classified based on a plurality of utterance patterns. By using a similarity degree between user's utterance pattern based on a recognition result, and the plurality of utterance patterns, a dictionary priority determination section 325 determines a priority of the plurality of kinds of dictionaries so that the priority may become higher, as the similarity degree is higher. If voice recognition is performed by preferentially using the dictionary of a high priority, in a voice recognition section 31, a final recognition result is obtained with high possibility, for example, only by using a dictionary of the priority 1. Thereby, appropriate voice recognition is attained with high possibility, only by collating with a fewer comparison object patterns than in a case when collating with all dictionaries. COPYRIGHT: (C)2010,JPO&INPIT
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