| 摘要 |
PROBLEM TO BE SOLVED: To provide a speech recognition device, a speech recognition method and a speech recognition program, capable of accurately performing speech recognition, even when a speaker utters differently from a normal way by being affected by a surrounding state. SOLUTION: A human density estimation means 1 estimates human density around the speaker, and a speech recognition means 2 recognizes input speech based on the human density. For example, the human density is calculated from electric wave density and footstep etc. around the speaker, and when the human density is high, the speech recognition is performed by using a sound model corresponding to high speed speech or a dictionary corresponding to speech using a word which may be heard. COPYRIGHT: (C)2008,JPO&INPIT
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