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:
Nov. 04, 2014
Filed:
Jun. 16, 2011
Yasuhiro Terada, Kanagawa, JP;
Takeo Kanamori, Osaka, JP;
Yasuhiro Terada, Kanagawa, JP;
Takeo Kanamori, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A directional microphone apparatus and directivity control method that corrects a level difference and a phase difference generated in a low band in a plurality of non-directional microphone units, improve the directivity, and reduce the size are provided. Level difference calculation section () calculates the level difference between first signal x() obtained by first non-directional microphone unit () and second signal x() obtained by second non-directional microphone unit (), and correction parameter calculation section () calculates coefficients of a linear IIR filter configuring correction process section () based on the level difference. Correction process section () simultaneously corrects the level difference and a phase difference in the low band between two non-directional microphone units by using the calculated coefficients.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile