Double-talk detector
    2.
    发明授权
    Double-talk detector 有权
    双通话检测器

    公开(公告)号:US06570986B1

    公开(公告)日:2003-05-27

    申请号:US09385353

    申请日:1999-08-30

    IPC分类号: H04M908

    CPC分类号: H04M9/082

    摘要: A communication system includes an echo canceller and double-talk detector. The echo canceller includes an adaptive finite impulse response filter that generates an adaptive filter weight vector. The double talk detector computes a squared norm of the filter weight vector and detects an increase of the squared norm in order to detect double-talk status. Upon detection of double-talk status, operation of the echo canceller is suspended.

    摘要翻译: 通信系统包括回波消除器和双向通话检测器。 回波消除器包括产生自适应滤波器权重向量的自适应有限脉冲响应滤波器。 双通话检测器计算滤波器权重向量的平方范数,并检测平方范数的增加以便检测双方对话状态。 在检测到双方通话状态时,回波消除器的操作被暂停。