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. 11, 2025
Filed:
Oct. 26, 2022
Alps Alpine Co., Ltd., Tokyo, JP;
Nozomu Saito, Fukushima, JP;
Keita Tanno, Tokyo, JP;
Alps Alpine Co., LTD., Tokyo, JP;
Abstract
A voice output from an i-th audio source apparatus is adjusted with a frequency transfer function W(f) set in an i-th noise reduction filter and is output from an i-th speaker. In the noise reduction filter, a frequency transfer function W(f) is set in which the sound is made smaller at frequencies where the gain of the frequency transfer function C(f) from the SPKi to a user tends to be relatively larger than the gain of the frequency transfer function C(f) from the SPKi to the user, and the sound is increased at frequencies where the gain of C(f) tends to be relatively smaller than the gain of C(f), where m is an integer excluding i from 1 to n.