| 摘要 |
PROBLEM TO BE SOLVED: To understand spoken words more accurately by solving a problem that a speech conventional system recognizes an inputted speech signal basically by a method for sequential acoustic recognition in word units, and in this method, a sound source is a naturally generated speech and easily influenced by ambient noise to hinder a conversation as user's spoken words can not correctly be understood. SOLUTION: A conversation understanding device as an embodiment of the present invention performs speech recognition for words and then classifies the obtained words by categories and classes to enable detailing, answering and correction, and an interaction corresponding to a speaking type of reinput, and also takes influence of past recognition records into consideration to select a more likely word while considering the relation with the context. COPYRIGHT: (C)2004,JPO&NCIPI
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