騒音制御装置

Japanese Patent JP5421124

B2

To provide a noise control device capable of eliminating a possibility that a noise arriving at a control point is increased as compared to a case where the noise control is not performed and capable of reducing the circuit scale thereof. The noise control device according to the present invention includes: a controlling noise detector for detecting a given arriving noise to output a controlling noise signal; a controlling filter section for signal-processing the controlling noise signal outputted from the controlling noise detector, by using a fixed filter coefficient which is preset, to output a control signal; a control speaker for reducing the given noise arriving at the control point, by emitting toward the control point a control sound based on the control signal outputted from the controlling filter section; a noise determination section for determining whether or not the given noise arriving at the control point is a noise corresponding to the fixed filter coefficient; and an output control section for stopping output of the control signal from the controlling filter section when the noise determination section determines that the given noise is not a noise corresponding to the fixed filter coefficient.

JP3535533	ACTIVE VIBRATION NOISE CONTROLLER
WO/2020/210050	AUTOMATED CONTROL OF NOISE REDUCTION OR NOISE MASKING
JP2000259159	FEEDBACK TYPE ACTIVE NOISE CONTROLLER

Hiroyuki Kano

JP2009547891A

February 19, 2014

December 24, 2008

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Panasonic Corporation

G10K11/178; B64D11/06

JPH02285799A	1990-11-26
JPH09101789A	1997-04-15
JP2007272008A	2007-10-18
JPH09101789A	1997-04-15
JP2007272008A	2007-10-18
JPH02285799A	1990-11-26

Patent business corporation Ogasawara patent office
Kaoru Kuwahara
Takeji Takada

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