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. 29, 2019
Filed:
Feb. 27, 2015
Pioneer Corporation, Tokyo, JP;
Akihiro Iseki, Saitama, JP;
PIONEER CORPORATION, Tokyo, JP;
Abstract
A sound volume control device is loaded on a vehicle and connected to a pair of speakers arranged left and right sides of two listening positions in a vehicle interior. Based on vehicle information, a first frequency characteristic and a second frequency characteristic, which are respective frequency characteristics at the two listening positions, of sound outputted from at least one of the pair of speakers are derived. Based on such characteristics, a sound signal supplied to at least one of the pair of speakers is controlled. When there is a common peak of the sound common to the first and second frequency characteristic, the sound signal is controlled in at least one of peak frequency bands which are the peak frequency bands corresponding to the common peak. Thereby, the sound signal is controlled such that the peaks appearing on the respective frequency characteristics at two listening positions are corrected.