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:
Mar. 22, 2016
Filed:
Dec. 16, 2009
Ryo Oouchi, Hamamatsu, JP;
Yuichiro Suenaga, Hamamatsu, JP;
Satoshi Ukai, Hamamatsu, JP;
Seiichiro Hosoe, Hamamatsu, JP;
Ryo Oouchi, Hamamatsu, JP;
Yuichiro Suenaga, Hamamatsu, JP;
Satoshi Ukai, Hamamatsu, JP;
Seiichiro Hosoe, Hamamatsu, JP;
YAMAHA CORPORATION, Hamamatsu-Shi, Shizuoka, JP;
Abstract
The invention provides a sound collection device having little error in a desired directivity. The sound collection device includes a unidirectional microphoneA, a unidirectional microphoneB, and a unidirectional microphoneC which are arranged on one plane. Each of the unidirectional microphones has the maximum sensitivity direction directed toward the inside of the arrangement. Each of the unidirectional microphones has a rear surface (direction of the minimum sensitivity) being open acoustically. Since the maximum sensitivity direction of each of the unidirectional microphones is directed toward the inside of the arrangement, the oscillation plane of each of the unidirectional microphones can be positioned substantially at the center of the arrangement. Thus, by adjusting the gain of the sound collected by the respective unidirectional microphones, the directivity can be freely formed on a flat plane with little error.