The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 27, 2016
Filed:
Feb. 20, 2013
Atsuyoshi Yano, Chiyoda-ku, JP;
Atsuyoshi Yano, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A control signal filterreceives a sound source signal determined by a control frequency specified in accordance with the vibration/noise source that produces vibration/noise, and outputs a control signal. A filter coefficient update unitupdates coefficients of the control signal filterin response to a sound source signal and an error signal. A disturbance detectoroutputs a disturbance detection result in response to the error signal and an estimated secondary vibration/noise signal. An update controlleradjusts an update step of the filter coefficient update unitin accordance with the disturbance detection result.
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