基于ZL38003的声回波抑制器的设计和实现  

Design and Realization of Acoustic Echo Canceller Based on ZL38003

作　　者：袁三男[1] 王绍徐[1] 

机构地区：[1]上海电力学院计算机与信息工程学院,上海200090

出　　处：《上海电力学院学报》2008年第2期141-144,148,共5页Journal of Shanghai University of Electric Power

摘　　要：电视电话通信中经常出现回波现象,使得通话质量大受影响.研究了回波产生及抑制原理,介绍了卓联半导体公司的语音处理芯片ZL38003,叙述了该器件的工作原理,并基于ZL38003和ADSP_BF 532实现了回波抑制器,详细介绍了软硬件设计的方法和实现过程中应注意的问题.设计的系统得到了广泛的应用.Echo is always generated in voice communication system, influencing the quality of communication. This paper describes echo generation and cancellation, introducing a good Acoustic Echo Canceller（AEC） chip ZL38003 of Zarlink Semiconductor incorporation, describing its function and principles. It realizes an AEC device based on ZL38003 and ADSP_BF 532, and describes the hardware and software design method in detail. It also presents the problems in the design. The design system is widely used in practice.

关 键 词：回波抑制 ZL38003 硬件实现 软件配置 

分 类 号：TN911.4[电子电信—通信与信息系统] TP319[电子电信—信息与通信工程]