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:
Feb. 17, 2015
Filed:
Feb. 19, 2009
Kosuke Sakamoto, Utsunomiya, JP;
Toshio Inoue, Tochigi-ken, JP;
Akira Takahashi, Tochigi-ken, JP;
Yasunori Kobayashi, Utsunomiya, JP;
Kosuke Sakamoto, Utsunomiya, JP;
Toshio Inoue, Tochigi-ken, JP;
Akira Takahashi, Tochigi-ken, JP;
Yasunori Kobayashi, Utsunomiya, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
On an active noise controller, an adjustment reference signal generator generates an adjustment reference signal Sra by reading the waveform data sequentially at a read location shifted by a given amount from a read location for a reference signal Sr with respect to the waveform data at a reference signal generator. A one-tap adaptive filter generates a control signal Scp by multiplying the adjustment reference signal Sra by a filter factor W. A gain controller outputs a compensation control signal Sca generated by multiplying the control signal Scp by gain G. A speaker outputs the compensation control signal Sca as a cancellation sound.