| 摘要 |
PROBLEM TO BE SOLVED: To reduce recognition error in a device for voice recognition. SOLUTION: A voice signal input means 101 receives a voice signal, and a recognition result candidate generation means 102 outputs N word strings, word duration length sequences respectively corresponding to N word strings, and N scores from preliminarily prepared sound models and a word dictionary. A duration length normalizing means 103 normalizes the duration lengths on the basis of a parameter prescribing linear function mapping, which is estimated by a normalization constant calculation means 105, by mapping prescribed by a linear function in accordance with speaking speed. A recognition result candidate correction means 104 corrects scores of each of the candidates of a recognition result in accordance with likelihoods of arrays of duration lengths of recognition result candidate word strings. COPYRIGHT: (C)2004,JPO
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