| 摘要 |
PROBLEM TO BE SOLVED: To provide a voice recognition device which reduces the calculation volume of similarities in the case of matching processing to quickly and accurately recognize voice. SOLUTION: A voice recognition device 100 is provided with a voice analysis part 105 for extracting the feature quantity of a voice signal with respect to each frame, a key word model database 106 wherein key word HMMs representative of feature quantity patterns of a plurality of key words to be recognized are stored, a similarity calculation part 107 for calculating similarity of the feature quantities of respective frames on the basis of the feature quantity of each extracted frame and key word HMMs, a matching processing part 108 for performing matching processing on the basis of the calculated similarity between each frame and each key word HMM and similarities of unnecessary words which don't constitute preliminarily set key words, and a discrimination part 109 for discriminating a key word included in a spoken voice on the basis of the matching processing. COPYRIGHT: (C)2004,JPO
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