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    Device and method for carrying out multichannel acoustic echo cancellation with a variable number of channels
    2.
    发明授权
    Device and method for carrying out multichannel acoustic echo cancellation with a variable number of channels 有权
    用多个通道进行多声道回声消除的装置和方法

    公开(公告)号：US07062041B2

    公开(公告)日：2006-06-13

    申请号：US10493910

    申请日：2002-10-25

    申请人： Herbert Buchner ,  Walter Kellerman

    发明人： Herbert Buchner ,  Walter Kellerman

    IPC分类号： H04M1/00

    CPC分类号： H04M9/082 ,  H04R3/02 ,  H04R27/00

    摘要： A multichannel full-duplex audio signal transmission system, comprising an adaptive filter (2) provided for multichannel acoustic echo cancellation. A channel combining device (5) is provided between the preprocessing units (V1, . . . VD) and loudspeakers (L1, . . . ,LD), in which several (C>D) loudspeakers can be connected to one and the same preprocessing unit and by means of which the remaining D-C preprocessing units can be separated from the loudspeakers (L1, . . , LD). The channel combining device permits an optimization of the convergence ratio of the adaptive adjustment of filter coefficients in said adaptive filter (2).

    摘要翻译： 一种多通道全双工音频信号传输系统，包括用于多声道回波消除的自适应滤波器（2）。 在预处理单元（V 1，...，VD）和扬声器（L 1，...，LD）之间提供信道组合设备（5），其中可以将几个（C> D）扬声器连接到一个和 相同的预处理单元，并且剩余的DC预处理单元可以与扬声器（L 1，...，LD）分离。 信道组合装置允许对所述自适应滤波器（2）中的滤波器系数的自适应调整的收敛比进行优化。