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:
Mar. 04, 2025
Filed:
Mar. 01, 2023
Honda Motor Co., Ltd., Tokyo, JP;
Xun Wang, Saitama, JP;
Toshio Inoue, Saitama, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
An active noise reduction system reduces a noise in an internal space of a mobile body. The active noise reduction system includes a controller configured to control a canceling sound output device. The controller is configured to generate a first canceling estimation signal as an estimation signal of a canceling sound at a position of an error detector based on a reference signal, generate a second canceling estimation signal as an estimation signal of the canceling sound at a head position of an occupant by adjusting a time delay and an amplitude of the first canceling estimation signal based on a reference distance, and update a control filter for controlling the canceling sound output device based on the second canceling estimation signal.