发明授权
US08126160B2 Use of non-audible band to relay information for echo cancellation in a distributed media system
有权
在分布式媒体系统中使用非可听频段中继信息进行回波消除
- 专利标题： Use of non-audible band to relay information for echo cancellation in a distributed media system
- 专利标题（中）： 在分布式媒体系统中使用非可听频段中继信息进行回波消除
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申请号： US12235179申请日： 2008-09-22
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公开(公告)号： US08126160B2公开(公告)日： 2012-02-28
- 发明人: James C. Frauenthal , Ramanathan Jagadeesan , Michael A. Ramalho
- 申请人： James C. Frauenthal , Ramanathan Jagadeesan , Michael A. Ramalho
- 申请人地址： US CA San Jose
- 专利权人： Cisco Technology, Inc.
- 当前专利权人： Cisco Technology, Inc.
- 当前专利权人地址： US CA San Jose
- 代理机构： Fish & Richardson P.C.
- 主分类号： H04B15/00
- IPC分类号： H04B15/00
摘要：
Particular embodiments provide for attenuating one or more microphone signals in a teleconferencing system upon detecting a non-audible signal. A far end voice signal is received from a sound source. A non-audible signal is added to the far end voice signal to create a composite signal, which is provided to one or more speakers. The speakers output the composite signal and the non-audible signal are detected in the composite signal after the composite signal is received at one or more microphones. The non-audible signal allows an attenuator to attenuate a microphone signal including the composite signal from a particular microphone in response to the detected non-audible signal to reduce far end echo.
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