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:
May. 21, 2013
Filed:
Jun. 20, 2007
Toshiaki Ishibashi, Fukuroi, JP;
Ryo Tanaka, Hamamatsu, JP;
Satoshi Ukai, Hamamatsu, JP;
Yamaha Corporation, , JP;
Abstract
A voice emitting and collecting device that is capable of picking up/outputting a voice emitted from a talker at a high S/N ratio by eliminating the influence of a diffracting voice despite a simple configuration is provided. A signal differencing circuitoutputs difference signals MSto MSbetween voice collecting beam signals MBto MBand voice collecting beam signals MBto MB. A level comparatorselects the difference signal having a maximum level. A signal selecting circuitselects voice collecting beam signals MB, MBof the difference signal MS that is selected/pointed by the level comparator. A subtractersubtracts the voice collecting beam signal MBfrom the voice collecting beam signal MB, and output a resultant signal. Accordingly, main components of the diffracting voice can be removed from the voice collecting beam signal.