DEVICE FOR DETERMINING DIRECTION TOWARDS A SOURCE OF SOUND Russian patent published in 2006 - IPC G01S3/80 

FIELD: tool-making industry.

SUBSTANCE: in device for determining direction to a source of sound, consisting of two photo-electric shadow devices and information processing systems, laser beams are directed at an angle of 90° to each other. In each photo-electric shadow device after focusing objective laser beam is split onto two laser beams, and these two laser beams go to two knives with mutually perpendicular edges. Edge of one of aforementioned knives in each photo-electric shadow device is parallel to plane, parallel to laser beams. Information, received from two photo-receivers, standing behind these knives, is utilized for maintaining similar sensitivity of both photo-electric shadow devices. Output signals from one of these photo-receivers and two other photo-receivers of photo-electric shadow devices are squared, amplified and added. Signal at output of adder is maintained constant due to loop of negative check connection from output of adder to inputs of amplifiers. On basis of signals at outputs of amplifiers with consideration of mutual phases of signal at outputs of photo-detectors by means of phase detectors and electronic computing machine, direction towards sound source is determined.

EFFECT: expanded functional capabilities of device.

7 dwg, 2 tbl