| 摘要 |
PROBLEM TO BE SOLVED: To improve a recognition rate by computing noise components more accurately. SOLUTION: Fixed type phrases reproduced from a speaker are collected by a voice recognition microphone prior to the performance of voice recognition of a user. The amount of propagation, that is the difference in comparing voice collected in a step S4 and original sound of the fixed type phrase, is computed as an environmental coefficient Sc. In a step S6, original sound So of a word model in dictionary word data is subtracted from uttered voice Si of the user, the coefficient Sc is subtracted and the result is obtained as a noise template Sn. In a step S7, the template Sn computed in the step S6 is subtracted from the original sound So of the word model in the dictionary word data and the uttered voice Si of the user. The result is compared and the word model for which a highest point is obtained in a voice recognition process is outputted as a recognition result. |
