公开(公告)号：US07359489B2

公开(公告)日：2008-04-15

申请号：US10981832

申请日：2004-11-05

申请人： William B. Page ,  Yan Wang ,  Timothy G. Wade ,  Mark Milot ,  Ibrahim Yavuz ,  David Cheng-Song Qi

发明人： William B. Page ,  Yan Wang ,  Timothy G. Wade ,  Mark Milot ,  Ibrahim Yavuz ,  David Cheng-Song Qi

IPC分类号： H04M1/24 ,  H04M3/08 ,  H04M3/22

CPC分类号： H04M9/082

摘要： A testing and performance analysis methodology applies a series of test vector pairs to the input ports of an echo canceller under test. The test vector signal pair may represent a particular speech activity state transition, e.g., a Brady Model transition. A scoring compression function such as a sigmoid squashing function is used to evaluate quantized performance parameters. The sub-scores may be weighted and averaged to provide an overall performance score.

摘要翻译： 测试和性能分析方法将一系列测试矢量对应用于被测回波消除器的输入端口。 测试向量信号对可以表示特定的语音活动状态转换，例如Br​​ady模型转换。 使用诸如S形压缩函数的评分压缩函数来评估量化的性能参数。 子分数可以被加权和平均以提供总体绩效得分。

公开(公告)号：US07583621B2

公开(公告)日：2009-09-01

申请号：US10958751

申请日：2004-10-05

申请人： David Cheng-Song Qi ,  Yan Wang ,  Timothy G. Wade ,  William B. Page

发明人： David Cheng-Song Qi ,  Yan Wang ,  Timothy G. Wade ,  William B. Page

IPC分类号： H04B3/20

CPC分类号： H04B3/23

摘要： A method, or corresponding apparatus, assumes a call is a Voice Band Data (VBD) call. The method disables a local echo canceller and transmits a tone that disables distal echo canceller(s) along a communications path across which the call is communicated. After disabling the echo cancellers, the echo cancellers are allowed to operate in a typical manner, such as according to ITU standards, after the call is established, including remaining disabled if the call is a Voice Band Data call and being automatically enabled if the call is or becomes a voice call. The method or apparatus is particularly useful in networks having Point of Service (POS) devices that have modems that do not send out a 2100 Hz tone to disable echo cancelling in the communications path. In one embodiment, the method or corresponding apparatus is deployed in a gateway.

摘要翻译： 方法或相应的装置假设呼叫是语音频带数据（VBD）呼叫。 该方法禁用本地回声消除器，并发送一个音调，禁止远程回声消除器沿着呼叫通信的通信路径。 在禁用回声消除器之后，回呼消除器被允许以典型的方式操作，例如根据ITU标准，在呼叫建立之后，包括如果呼叫是语音频带数据呼叫，则保持禁用，并且如果呼叫被自动启用 是或成为语音通话。 该方法或装置在具有不发送2100Hz音调以调制通信路径中的回波消除的调制解调器的服务点（POS）设备的网络中特别有用。 在一个实施例中，该方法或相应的装置部署在网关中。