| 摘要 |
PROBLEM TO BE SOLVED: To provide a speech recognition device under noise, which has performance approaching performance of a matching model of input noise, with a small memory amount. SOLUTION: The speech recognition device includes: a feature extracting means for extracting a feature vector for each frame by analyzing input speech; an acoustic model storage means for storing a basic parameter of an acoustic model; a deformation model storage means for storing a deformation model for expressing correspondence relation of the basic parameter of the acoustic model and the parameter of the acoustic model after deformation, as a classified parameter; and a matching means in which the basic parameter of the acoustic model is deformed based on the deformation model in response to output of the feature extracting means, and matched with the feature vector by calculating likelihood, based on at least the parameter of the acoustic model after deformation. COPYRIGHT: (C)2008,JPO&INPIT
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