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:
Dec. 25, 2018
Filed:
Feb. 23, 2017
Applicant:
2236008 Ontario Inc., Waterloo, CA;
Inventor:
Mark Robert Every, Surrey, CA;
Assignee:
2236008 Ontario Inc., Waterloo, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10K 11/178 (2006.01);
U.S. Cl.
CPC ...
G10K 11/178 (2013.01); G10K 2210/1282 (2013.01); G10K 2210/12821 (2013.01); G10K 2210/3028 (2013.01); G10K 2210/3046 (2013.01); G10K 2210/3054 (2013.01); G10K 2210/3055 (2013.01);
Abstract
A system and method (referred to as the system) that actively reduces noise in a vehicle. The system generates one or more control output signals to drive multiple loudspeakers; and adapts multiple control coefficients of a control filter based on multiple secondary path transfer functions. The secondary path transfer functions model the acoustic paths between each loudspeaker and multiple microphones. The multiple control coefficients are time varying and frequency dependent and the rate the plurality control coefficients adapt is based on an adaptive step size based on one or more step size criteria.