Sound source locating system

Details Sound source locating system Sound source locating system

G - Physics

01

S

G01S 5/22 (2006.01) G01S 3/808 (2006.01) H04N 7/18 (2006.01) H04R 1/40 (2006.01)

Patent

CA 2393094

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 (M1, M3) and another pair of microphones (M2, M4) 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 (M1, M3) and a difference between sound arrival times to the microphones (M2, M4), 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.

Afin de spécifier et d'afficher la source d'un bruit dans une usine ou similaire, de façon précise même à l'extérieur, on dispose deux paires de microphones (M1, M3; M2, M4) respectivement sur l'axe X et l'axe Y, en les espaçant par une distance L. La direction de la source sonore est estimée sur la base de la différence du moment d'arrivée des signaux de sortie provenant de la paire de microphones (M1, M3) et de la différence du moment d'arrivée des signaux de sortie provenant de la paire de microphones (M2, M4). En outre, l'image à proximité de la source sonore estimée est captée par une caméra (11) et la position estimée de la source sonore est indiquée sur une image affichée par l'écran (23) d'un ordinateur personnel (20).

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