公开(公告)号：WO0180220A3

公开(公告)日：2002-05-23

申请号：PCT/IB0101603

申请日：2001-03-14

Applicant: MOTOROLA ISRAEL LTD ,  SHAHAF MARK ,  BEN SHIMOL YISHAY ,  SHOR HAHAM MOTI

Inventor： SHAHAF MARK ,  BEN-SHIMOL YISHAY ,  SHOR-HAHAM MOTI

IPC: G10L25/78 ,  G10L11/02

CPC classification number: G10L25/78

Abstract: Voice activity detection system including a plurality of audio parameter delay units connected in series therebetween, the first audio parameter delay unit being further connected to an audio parameter generator, a plurality of distance measure units, each connected to at least two of the delay units, and averaging unit, connected to the distance measure units, a plurality of averaging delay units connected in series therebetween, the first averaging delay unit being further connected to the output of the averaging unit, and a digital logic unit connected to the averaging delay units.

Abstract translation: 语音活动检测系统包括在其间串联连接的多个音频参数延迟单元，第一音频参数延迟单元进一步连接到音频参数发生器，多个距离测量单元，每个连接至少两个延迟单元， 以及连接到所述距离测量单元的平均单元，在其间串联连接的多个平均延迟单元，所述第一平均延迟单元进一步连接到所述平均单元的输出，以及连接到所述平均延迟单元的数字逻辑单元。

公开(公告)号：WO0135603A2

公开(公告)日：2001-05-17

申请号：PCT/IB0002063

申请日：2000-11-13

Applicant: MOTOROLA ISRAEL LTD ,  OR SHRAGA BOAZ ,  SHAHAF MARK ,  AVAYU IZAK ,  BEN SHIMOL YISHAY

Inventor： OR-SHRAGA BOAZ ,  SHAHAF MARK ,  AVAYU IZAK ,  BEN-SHIMOL YISHAY

IPC: H04M9/08 ,  H04M

CPC classification number: H04M9/082

Abstract: Echo canceling method including the steps of determining an Euclidean norm of an echo-replica signal, determining an Euclidean norm of an input signal, determining a gradient step size, correcting the coefficients of an adaptive filter, deriving an updated echo-replica signal, and determining an updated error signal by subtracting the updated echo-replica signal from the input signal.

Abstract translation: 回波消除方法包括以下步骤：确定回波 - 复制信号的欧几里得范数，确定输入信号的欧几里德范数，确定梯度步长，校正自适应滤波器的系数，导出更新的回波 - 复制信号;以及 通过从输入信号中减去更新的回波复制信号来确定更新的误差信号。