发明授权
- 专利标题: Voice emitting and collecting device
- 专利标题(中): 语音发射和收集装置
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申请号: US12306413申请日: 2007-06-20
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公开(公告)号: US08447590B2公开(公告)日: 2013-05-21
- 发明人: Toshiaki Ishibashi , Ryo Tanaka , Satoshi Ukai
- 申请人: Toshiaki Ishibashi , Ryo Tanaka , Satoshi Ukai
- 申请人地址: JP
- 专利权人: Yamaha Corporation
- 当前专利权人: Yamaha Corporation
- 当前专利权人地址: JP
- 代理机构: Rossi, Kimms & McDowell LLP
- 优先权: JP2006-179792 20060629
- 国际申请: PCT/JP2007/062393 WO 20070620
- 国际公布: WO2008/001659 WO 20080103
- 主分类号: G10L11/00
- IPC分类号: G10L11/00
摘要:
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.
公开/授权文献
- US20090248408A1 VOICE EMITTING AND COLLECTING DEVICE 公开/授权日:2009-10-01
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