公开(公告)号：US20140016794A1

公开(公告)日：2014-01-16

申请号：US13941350

申请日：2013-07-12

Applicant: Conexant Systems, Inc.

Inventor： Youhong Lu ,  Trausti Thormundsson ,  Chris Gao

IPC: H04R3/00

CPC classification number: H04R3/002 ,  H04R1/342 ,  H04R1/345 ,  H04R3/02 ,  H04R2430/03

Abstract: An audio processing system comprising two or more microphones and an echo cancellation system configured to apply a fast converging adaptive filtering algorithm to low frequency bands of a first microphone signal to generate first synthesized echo signal components and an adaptive filtering algorithm to high frequency bands of the first microphone signal to generate second synthesized echo signal components and to apply the first synthesized echo signal components and the second synthesized echo signal components to the first microphone signal to cancel an echo signal of the first microphone signal. An echo estimate and suppression system is configured to receive the first synthesized echo signal components and the second synthesized echo signal components and to apply them to estimate powers of echo signals in one or more additional microphones.

Abstract translation: 一种音频处理系统，包括两个或多个麦克风和回声消除系统，该系统被配置为对第一麦克风信号的低频带应用快速收敛自适应滤波算法，以产生第一合成回波信号分量和自适应滤波算法到高频带 第一麦克风信号以产生第二合成回波信号分量并将第一合成回波信号分量和第二合成回波信号分量应用于第一麦克风信号以消除第一麦克风信号的回波信号。 回波估计和抑制系统被配置为接收第一合成回波信号分量和第二合成回波信号分量，并将其应用于估计一个或多个附加麦克风中的回波信号的功率。