Invention Grant
- Patent Title: Voice emitting and collecting device
- Patent Title (中): 语音发射和收集装置
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Application No.: US12306413Application Date: 2007-06-20
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Publication No.: US08447590B2Publication Date: 2013-05-21
- Inventor: Toshiaki Ishibashi , Ryo Tanaka , Satoshi Ukai
- Applicant: Toshiaki Ishibashi , Ryo Tanaka , Satoshi Ukai
- Applicant Address: JP
- Assignee: Yamaha Corporation
- Current Assignee: Yamaha Corporation
- Current Assignee Address: JP
- Agency: Rossi, Kimms & McDowell LLP
- Priority: JP2006-179792 20060629
- International Application: PCT/JP2007/062393 WO 20070620
- International Announcement: WO2008/001659 WO 20080103
- Main IPC: G10L11/00
- IPC: G10L11/00

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 circuit 191 outputs difference signals MS1 to MS4 between voice collecting beam signals MB11 to MB14 and voice collecting beam signals MB21 to MB24. A level comparator 195 selects the difference signal having a maximum level. A signal selecting circuit 196 selects voice collecting beam signals MB1x, MB2x of the difference signal MS that is selected/pointed by the level comparator 195. A subtracter 199 subtracts the voice collecting beam signal MB2x from the voice collecting beam signal MB1x, and output a resultant signal. Accordingly, main components of the diffracting voice can be removed from the voice collecting beam signal.
Public/Granted literature
- US20090248408A1 VOICE EMITTING AND COLLECTING DEVICE Public/Granted day:2009-10-01
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