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. 06, 2015
Filed:
Jun. 19, 2013
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A first filter coefficient and a second filter coefficient are calculated by using spatial transfer characteristics from a first speaker and a second speaker to a first control point and a second control point, and a first sound increase ratio na at the first control point and a second sound increase ratio nb at the second control point, so that, when the first filter coefficient is a through characteristic, a first composite sound pressure from the first speaker and the second speaker to the first control point is na times a first sound pressure from the first speaker to the first control point, and a second composite sound pressure from the first speaker and the second speaker to the second control point is nb times a second sound pressure from the first speaker to the second control point.