| 摘要 |
PROBLEM TO BE SOLVED: To accurately recognize speech in order to effectively execute a plurality of control commands as a recognition result based on superimposed speech in uttering control of an onboard device. SOLUTION: In this speech recognition device 10, a sound source separation and sound source direction estimation processing part 11a separates speech for each of the sound sources from the superimposed and collected speech, and estimates the sound source direction of each of the speech. When reliability of sound source direction estimation is equal to or less than a prescribed threshold, a driver's seat speech recognition and operation command conversion processing part 11b, a passenger seat speech recognition and operation command conversion processing part 11c, and a rear seat speech recognition and operation command conversion processing part 11d recognize the speech with the usage of a speech recognition dictionary in correspondence with all of the sound source directions, and reliability of speech recognition is calculated respectively. An operation command conversion result correction processing part 11e corrects the estimated sound source direction based on the product of reliability of the sound source direction and reliability of the speech recognition. COPYRIGHT: (C)2009,JPO&INPIT
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