发明授权
- 专利标题： Echo suppressing method and apparatus
- 专利标题（中）： 回波抑制方法及装置
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申请号： US12084119申请日： 2006-10-25
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公开(公告)号： US08811627B2公开(公告)日： 2014-08-19
- 发明人: Osamu Hoshuyama
- 申请人： Osamu Hoshuyama
- 申请人地址： JP Tokyo
- 专利权人： NEC Corporation
- 当前专利权人： NEC Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Foley & Lardner LLP
- 优先权： JP2005-311180 20051026
- 国际申请： PCT/JP2006/321267 WO 20061025
- 国际公布： WO2007/049643 WO 20070503
- 主分类号： H04B15/00
- IPC分类号： H04B15/00 ; H04B1/38
摘要：
Coefficient generator generates a crosstalk coefficient that is a predetermined value and that is used to calculate the amount of crosstalk of an echo. Converter uses either the output signal of a sound pickup device or the signal obtained by subtracting the output signal of an echo canceller from the output signal of the sound pickup device as a first signal, corrects the first signal based on the crosstalk coefficient generated in coefficient generator, and produces a near-end signal obtained by removing the echo from the first signal.
公开/授权文献
- US20090041263A1 Echo Suppressing Method and Apparatus 公开/授权日：2009-02-12
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