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:
Oct. 21, 2008
Filed:
May. 28, 2001
Daisuke Arai, Tokyo, JP;
Fujio Hayakawa, Tokyo, JP;
Toyoaki Kitano, Tokyo, JP;
Yutaka Kotani, Tokyo, JP;
Yutaka Yamagishi, Tokyo, JP;
Masahiro Ieda, Tokyo, JP;
Daisuke Arai, Tokyo, JP;
Fujio Hayakawa, Tokyo, JP;
Toyoaki Kitano, Tokyo, JP;
Yutaka Kotani, Tokyo, JP;
Yutaka Yamagishi, Tokyo, JP;
Masahiro Ieda, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A vehicle-mounted three dimensional sound signal reproducing•silencing unit includes at least two speakers disposed for each of seats to be occupied by listeners so as to generate a three dimensional sound field space in a region inclusive of left and right external ears of each of the listeners, and three dimensional signal processing means for converting an output signal from a sound source into a three dimensional sound field signal for supplying it to each of the speakers, thereby reproducing a three dimensional sound field with rich presence for each of the seats. The unit also includes antiphase signal generating means for supplying a silencing signal to the three dimensional signal processing means, thereby silencing sounds for each of the seats without giving an effect on the other seats.