| 摘要 |
In order to locate and display the source of a sound such as a noise at a factory or the like accurately even when it is outside, a pair of microphones (M 1 , M 3 ) and another pair of microphones (M 2 , M 4 ) are disposed on the X axis and Y axis with a distance L therebetween, respectively, the direction of the sound source is estimated from a difference between sound arrival times to the microphones (M 1 , M 3 ) and a difference between sound arrival times to the microphones (M 2 , M 4 ), an image around the estimated location of the sound source is picked up by a camera, and the above estimated location of the sound source is displayed on the above image displayed on the display of a personal computer.
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