| 摘要 |
<P>PROBLEM TO BE SOLVED: To shorten the processing time by reducing the frequency of matching processing with past data using time information. Ž<P>SOLUTION: This speech recognizing device comprises a similarity measuring means 31 for measuring the similarity of a speech signal, and a speech reproduction type determining means 32 for determining whether the speech signal input with speech recognition request is input within a predetermined period from the time when a past speech signal of high similarity is input. When the speech signal input with the speech recognition request is input within the predetermined period from the time when the past speech signal of high similarity is input, the speech reproduction type determining means 32 determines that the speech signal is speech reproduction out of vocabulary or speech reproduction by incorrect recognition. When the speech signal input with the speech recognition request is input after the predetermined period from the time when the past speech signal of high similarity is input, the speech reproduction type determining means 32 determines that the speech signal is periodical speech production. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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