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. 19, 1999
Filed:
Oct. 27, 1997
Masashi Ohkubo, Kanagawa, JP;
Toru Sasaki, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A microphone device is of a structure comprising at least three microphone elements disposed in the state spaced by predetermined distances in a direction perpendicular to the main axis of directivity, and an adder for adding output signals from the respective microphone elements. In this case, the microphone elements are respectively comprised of uni-directional microphone elements, and are disposed in the state where the sound collection surfaces are directed in the same direction with respect to the sound source and at substantially equal intervals. This microphone device realizes sharp directivity in the middle pitched tone (sound) region (range) required for the input means of the speech recognition equipment, and realizes sound collection which has high sensitivity with respect to speech (voice) input from the front and has extremely less noise components inputted from the side surfaces (lateral direction).