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:
Jan. 30, 2024
Filed:
Feb. 16, 2023
Applicant:
Bose Corporation, Framingham, MA (US);
Inventor:
Emery M. Ku, Somerville, MA (US);
Assignee:
Bose Corporation, Framingham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 29/00 (2006.01); H04R 3/00 (2006.01); H04R 1/10 (2006.01); H04R 3/02 (2006.01);
U.S. Cl.
CPC ...
H04R 1/1083 (2013.01); H04R 3/02 (2013.01); H04R 29/004 (2013.01);
Abstract
A method for detecting and mitigating parasitic oscillation in a headphone equipped with an active noise reduction (ANR) system. A fundamental frequency of a microphone signal is determined from a microphone of the ANR system and an amplitude of the determined fundamental frequency is compared to a threshold level to determine parasitic oscillation. If parasitic oscillation is determined, then the microphone signal is altered to mitigate the parasitic oscillation.