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    Echo Cancellation For A Packet Voice System
    2.
    发明申请
    Echo Cancellation For A Packet Voice System 有权
    分组语音系统的回波消除

    公开(公告)号：US20090154380A1

    公开(公告)日：2009-06-18

    申请号：US12353099

    申请日：2009-01-13

    申请人： Wilfred LeBlanc

    发明人： Wilfred LeBlanc

    IPC分类号： H04B3/20

    CPC分类号： H04M11/062 ,  G10L19/0208 ,  G10L19/24 ,  H04L5/06 ,  H04L47/32 ,  H04L49/90

    摘要： An apparatus and methods supporting improved echo cancellation in a packet network is disclosed. An embodiment of the present invention may permit a split-band communication system operating in a narrowband mode to provide improved suppression of hybrid echo generated by the conversion of signals from a packet network to a two-wire analog circuit. By detecting the presence of signal characteristics outside of the relatively narrower bandwidth to be communicated, such an embodiment may more accurately detect the occurrence of speech received from a party on a relatively wider bandwidth communication circuit. The accurate detection of speech permits more effective suppression of any hybrid echo remaining after echo cancellation. An embodiment of the present invention may also have application in other systems that detect signals received via a path having a bandwidth greater than that to be transmitted.

    摘要翻译： 公开了一种在分组网络中支持改进的回波消除的装置和方法。 本发明的实施例可以允许以窄带模式操作的分离带通信系统通过将信号从分组网络转换为双线模拟电路而产生的混合回声提供改进的抑制。 通过检测要传送的相对较窄带宽之外的信号特性的存在，这样的实施例可以更准确地检测在相对较宽带宽通信电路上从一方接收的语音的发生。 语音的准确检测允许更有效地抑制回声消除后剩余的任何混合回波。 本发明的实施例还可以应用于检测经由具有大于要发送的带宽的路径接收的信号的其他系统中。

    SELECTIVELY ADAPTABLE FAR-END ECHO CANCELLATION IN A PACKET VOICE SYSTEM
    4.
    发明申请
    SELECTIVELY ADAPTABLE FAR-END ECHO CANCELLATION IN A PACKET VOICE SYSTEM 有权
    在分组语音系统中选择适应的终端ECHO取消

    公开(公告)号：US20090022075A1

    公开(公告)日：2009-01-22

    申请号：US12202634

    申请日：2008-09-02

    申请人： Wilfred LeBlanc

    发明人： Wilfred LeBlanc

    IPC分类号： H04B3/20

    CPC分类号： H04B3/23 ,  H04M9/082

    摘要： A packet voice transceiver adapted to reside at a first end of a communication network and to send an ingress communication signal comprising voice packets to, and receive an egress communication signal comprising voice packets from, a second packet voice transceiver residing at a second end of the communication network. The packet voice transceiver includes a far-end echo canceller that reduces echo that is present in the egress communication signal. The far-end communicates with other functional components of the transceiver system and cancels echo or refrains from canceling echo based on the activity of the other functional components.

    摘要翻译： 分组语音收发器，适于驻留在通信网络的第一端，并且发送包括语音分组的入口通信信号，并且从驻留在所述第二端的第二分组语音收发器接收包括语音分组的出口通信信号 通讯网络 分组语音收发器包括远端回波消除器，其减少存在于出口通信信号中的回波。 远端与收发器系统的其他功能组件进行通信，并根据其他功能组件的活动消除回声或抑制消除回声。