| 摘要 |
<p>In order to specify and display the source of noise in a factory, or the like, accurately even in the outdoors, two pairs of microphones (M1, M3; M2, M4) are disposed, respectively, on the X axis and Y axis while spaced apart by a distance L. Direction of a sound source is estimated based on the difference of arriving time of output signals from the pair of microphones (M1, M3) and the difference of arriving time of output signals from the pair of microphones (M2, M4). Furthermore, the image in the vicinity of an estimated sound source is picked up by means of a camera (11) and the estimated position of sound source is indicated on an image displayed on the display (23) of a personal computer (20).</p> |
