公开(公告)号：US20130156211A1

公开(公告)日：2013-06-20

申请号：US13722051

申请日：2012-12-20

Applicant: Electronics and Telecommunications Research Institute

Inventor： In Ki HWANG

IPC: H04B3/23

CPC classification number: H04B3/23 ,  H04M9/082

Abstract: A wideband acoustic echo cancellation apparatus with an adaptive tail length in an embedded system, and a wideband acoustic echo cancellation method are provided, and the wideband acoustic echo cancellation apparatus may include a delay length calculating unit to calculate a delay length of an echo path, using a near-end signal and a far-end signal, an adaptive filter implementing unit to implement an adaptive filter based on the calculated delay length, using selected coefficients, and an error calculating unit to search for three intervals having a largest impulse response value from all intervals of a tail of the adaptive filter, and to calculate an error during an interval in which the selected coefficients are used.

Abstract translation: 提供了一种在嵌入式系统中具有自适应尾部长度的宽带声回波消除装置和宽带声回波消除方法，并且宽带声回波消除装置可包括延迟长度计算单元，用于计算回波路径的延迟长度， 使用近端信号和远端信号，自适应滤波器实现单元，使用所选择的系数基于所计算的延迟长度来实现自适应滤波器;以及误差计算单元，以搜索具有最大脉冲响应值的三个间隔 从自适应滤波器的尾部的所有间隔开始，并且在使用所选择的系数的间隔期间计算误差。