基于Windows平台的双通道回声抵消系统

计算机与现代化

基于Windows平台的双通道回声抵消系统

西北工业大学计算机学院,陕西西安710129

收稿日期:2013-11-29 出版日期:2014-04-17 发布日期:2014-04-23
作者简介:作者简介：刘扬(1987),男,江苏张家港人,西北工业大学计算机学院硕士研究生,研究方向：数学音频信号处理，立体声回声抵消；付中华(1977),男,湖北十堰人,副教授,博士,研究方向：数字音频信号处理，声场计算技术；唐玲(1987),女（黎族）,海南儋州人,硕士研究生,研究方向：边界元计算，HRTF测量。

A Dualchannel Acoustic Echo Canceler on Windows Platform

School of Computer Science, Northwestern Polytechnical University, Xi’an 710129, China

Received:2013-11-29 Online:2014-04-17 Published:2014-04-23

摘要/Abstract

摘要：

摘要：描述一个基于Windows平台的双通道回声抵消系统。该系统使用一种高速、高采样率的音频I/O驱动模型，能够在底层解决系统中声音处理的实时性和同步性问题。为了尽量减少网络和计算机资源的占用，采用重采样技术来改变声音信号在网络传输和实时处理时的采样率，其中系统使用重采样技术降低声音通道间的相关性，以提高回声抵消算法的效率。最后通过实验验证了双通道回声抵消系统的有效性。



关键词: , 回声抵消, 多线程, 重采样, 去相关

Abstract:

Abstract: A dualchannel acoustic echo cancellation (AEC) system on Windows platform is proposed. It involves a highspeed and high sampling rate audio I/O driver model, which can solve the realtime and synchronic audio processing problems through lowlevel interface. To reduce the transmission and computation loads, a resampling technique is used to adjust the sample rate during net transmission and realtime processing. Additionally, the interchannel decorrelation is implemented with frequencydomain resampling technique so as to improve the performance of echo cancellation. The experimental results verified the effectiveness of the proposed system.

Key words:

Key words: acoustic echo canceler, multithread, resample, decorrelation

中图分类号:

TP391

刘扬，付中华，唐玲. 基于Windows平台的双通道回声抵消系统[J]. 计算机与现代化.

LIU Yang, FU Zhonghua, TANG Ling. A Dualchannel Acoustic Echo Canceler on Windows Platform[J]. Computer and Modernization.

参考文献

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