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:
Aug. 02, 2016
Filed:
Feb. 14, 2013
Yamaha Corporation, Hamamatsu-shi, Shizuoka, JP;
Kunihiro Kumagai, Hamamatsu, JP;
Yasuo Shiozawa, Heverlee, BE;
Shuichi Esaki, Hamamatsu, JP;
Hirofumi Onitsuka, Hamamatsu, JP;
Kiyohiko Goto, Iwata, JP;
Yoshiaki Tsutsui, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu-shi, JP;
Abstract
A microphone device includes: a housing having an opening section in an upper face thereof; and a non-directional microphone unit incorporated in the housing and provided inside the opening section. The upper face of the housing has a shape in which a distance from an edge defined as a boundary between the upper face and a side face or a bottom face to the opening section throughout a whole circumference of the upper face changes in ½ or more of the whole circumference of the edge and an average value of the distance from the edge to the opening section is shorter than ½ of a wavelength of a sound wave in a frequency range in which an auditory sensitivity of humans is low.