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1. 发明申请

US20090202063A1 Controlling Echo During Double-Talk in a Voice Conference 有权
标题翻译：在语音会议双重对话中控制回声
公开(公告)号：US20090202063A1
公开(公告)日：2009-08-13
申请号：US12028594
申请日：2008-02-08
申请人： James C. Frauenthal , Michael A. Ramalho , Gary Skrabutenas , Herbert Wildfeuer
发明人： James C. Frauenthal , Michael A. Ramalho , Gary Skrabutenas , Herbert Wildfeuer
IPC分类号： H04M9/08
CPC分类号： H04M9/08
摘要： An echo canceller apparatus comprises a receive side attenuator coupled in a receive side signal path that is configured to couple from a conference call bridge to a caller; a convolution processor coupled to the receive side signal path at a convolution processor pick-off point; a double-talk detector coupled to the receive side signal path and to a sending side signal path that is configured to couple from the caller to the conference call bridge; and logic coupled to the receive side attenuator which when executed is responsive to a double-talk condition detected by the double-talk detector and operable to determine a level of echo canceled by the convolution processor, to determine an additional amount of attenuation to introduce, and to activate the receive side attenuator to introduce the additional attenuation.
摘要翻译：一种回声消除装置包括耦合在接收侧信号路径中的接收侧衰减器，接收侧衰减器被配置为从会议呼叫桥耦合到呼叫者; 在卷积处理器拾取点处耦合到接收侧信号路径的卷积处理器; 耦合到接收侧信号路径的双向通话检测器和被配置为从呼叫者耦合到电话会议桥的发送侧信号路径; 以及耦合到所述接收侧衰减器的逻辑，其在执行时响应于所述双方通话检测器检测到的双方通话条件，并且可操作以确定由所述卷积处理器消除的回波电平，以确定要引入的附加的衰减量，并激活接收侧衰减器以引入额外的衰减。

2. 发明授权

US08238548B2 Controlling echo during double-talk in a voice conference 有权
标题翻译：在语音会议中双向通话期间控制回声
公开(公告)号：US08238548B2
公开(公告)日：2012-08-07
申请号：US12028594
申请日：2008-02-08
申请人： James C. Frauenthal , Michael A. Ramalho , Gary Skrabutenas , Herbert Wildfeuer
发明人： James C. Frauenthal , Michael A. Ramalho , Gary Skrabutenas , Herbert Wildfeuer
IPC分类号： H04M9/08 , H04M1/00 , H04M3/42 , H04M9/00
CPC分类号： H04M9/08
摘要： An echo canceller apparatus comprises a receive side attenuator coupled in a receive side signal path that is configured to couple from a conference call bridge to a caller; a convolution processor coupled to the receive side signal path at a convolution processor pick-off point; a double-talk detector coupled to the receive side signal path and to a sending side signal path that is configured to couple from the caller to the conference call bridge; and logic coupled to the receive side attenuator which when executed is responsive to a double-talk condition detected by the double-talk detector and operable to determine a level of echo canceled by the convolution processor, to determine an additional amount of attenuation to introduce, and to activate the receive side attenuator to introduce the additional attenuation.
摘要翻译：一种回声消除装置包括耦合在接收侧信号路径中的接收侧衰减器，接收侧衰减器被配置为从会议呼叫桥耦合到呼叫者; 在卷积处理器拾取点处耦合到接收侧信号路径的卷积处理器; 耦合到接收侧信号路径的双向通话检测器和被配置为从呼叫者耦合到电话会议桥的发送侧信号路径; 以及耦合到所述接收侧衰减器的逻辑，其在执行时响应于所述双方通话检测器检测到的双方通话条件，并且可操作以确定由所述卷积处理器消除的回波电平，以确定要引入的附加的衰减量，并激活接收侧衰减器以引入额外的衰减。

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