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ENERGY DENSITY CONTROL SYSTEM USING TWO-DIMENSIONAL ENERGY DENSITY SENSOR

PROBLEM TO BE SOLVED: To provide a system and a method with which noise in an enclosure (110) is reduced.

SOLUTION: The method includes a step for receiving at least one reference signal (105); a step for receiving pressure signals from no more than two substantially orthogonally placed pairs of acoustic sensors, where one pair of acoustic sensors is in the x-direction and one pair of acoustic sensors is in the y-direction, and where the acoustic sensors (330) are placed in a plane which is substantially parallel and in proximity to an inner surface of the enclosure (110), using the pressure signals and the reference signal (105) to generate an output signal to minimize energy density at a location of the acoustic sensors (330); and a step for transmitting the output signal to an acoustic actuator (340).

COPYRIGHT: (C)2006,JPO&NCIPI

Inventors: 

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Patent Number: 
JP2006065324
Patent Issue Date: 
April 9, 2006
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