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1.发明授权公开(公告)号：US07516033B2
公开(公告)日：2009-04-07
申请号：US11426226
申请日：2006-06-23
IPC分类号： G06F19/00
CPC分类号： H04B3/23
摘要： A method and apparatus for identifying echo sources in a communication path. A system that incorporates teachings of the present disclosure may include, for example, an echo measurement device (EMD) having a transmit module to transmit an echo canceller deactivation signal in a communication path of the communication system, wherein the echo canceller deactivation signal deactivates one or more echo cancellers in said communication path. The transmit module can also transmit a test signal in the communication path which is looped back at an end point identified as having an echo problem, wherein the test signal is transmitted at a remote location from the end point. The EMD can further include a detection module to detect one or more echo signals associated with the test signal. Additional embodiments are disclosed.
摘要翻译： 一种用于识别通信路径中的回波源的方法和装置。 结合本公开的教导的系统可以包括例如具有发射模块以在通信系统的通信路径中发送回波消除器去激活信号的回波测量装置（EMD），其中回波消除器去激活信号使一个 或更多的回声消除器。 发射模块还可以在通信路径中发送测试信号，该测试信号在被识别为具有回波问题的终点被环回，其中测试信号在距离终点的远程位置发送。 EMD还可以包括检测模块以检测与测试信号相关联的一个或多个回波信号。 公开了另外的实施例。
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公开(公告)号：US20110149815A1
公开(公告)日：2011-06-23
申请号：US12641185
申请日：2009-12-17
申请人： James James , David B. Ramsden , Wallace F. Smith
发明人： James James , David B. Ramsden , Wallace F. Smith
CPC分类号： H04M9/082
摘要： A method and apparatus for providing echo cancellation are disclosed. For example, the method receives via an echo canceller a first audio signal directed towards an endpoint device, and adds an inserted signal to the first audio signal directed towards the endpoint device. The method determines if a second audio signal being received from the endpoint device comprises the inserted signal, and cancels at least a portion of the second audio signal that is associated with the first audio signal, if the inserted signal is detected.
摘要翻译： 公开了一种用于提供回波抵消的方法和装置。 例如，该方法经由回波消除器接收指向端点设备的第一音频信号，并将插入的信号添加到指向端点设备的第一音频信号。 如果检测到插入的信号，该方法确定从端点装置接收的第二音频信号是否包括插入的信号，并且取消与第一音频信号相关联的第二音频信号的至少一部分。
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公开(公告)号：US5216702A
公开(公告)日：1993-06-01
申请号：US842675
申请日：1992-02-27
申请人： David B. Ramsden
发明人： David B. Ramsden
摘要： A digital signal processor is provided with the facility to measure accurately, and nonintrusively, the levels of noise and/or speech signals appearing on an in-service network connection.
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公开(公告)号：US08391126B2
公开(公告)日：2013-03-05
申请号：US12641185
申请日：2009-12-17
申请人： James James , David B. Ramsden , Wallace F. Smith
发明人： James James , David B. Ramsden , Wallace F. Smith
IPC分类号： H04J1/12
CPC分类号： H04M9/082
摘要： A method and apparatus for providing echo cancellation are disclosed. For example, the method receives via an echo canceller a first audio signal directed towards an endpoint device, and adds an inserted signal to the first audio signal directed towards the endpoint device. The method determines if a second audio signal being received from the endpoint device comprises the inserted signal, and cancels at least a portion of the second audio signal that is associated with the first audio signal, if the inserted signal is detected.
摘要翻译： 公开了一种用于提供回波抵消的方法和装置。 例如，该方法经由回波消除器接收指向端点设备的第一音频信号，并将插入的信号添加到指向端点设备的第一音频信号。 如果检测到插入的信号，该方法确定从端点装置接收的第二音频信号是否包括插入的信号，并且取消与第一音频信号相关联的第二音频信号的至少一部分。
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