基于以太网的数字话音传输系统设计  

Design on Digital Voice Transmission System Based on Ethernet

作　　者：李健 李丽霞 

机构地区：[1]同方电子科技有限公司研究所,江西九江332002

出　　处：《无线电工程》2014年第5期68-70,74,共4页Radio Engineering

摘　　要：针对在工程应用中如何通过以太网进行话音传输提出了一种设计方案,分析了话音在网络上传输的特点,介绍了一种基于以太网的数字话音传输系统方案。系统以自带网络协议的嵌入式ARM微控制器LM3S9B96为核心平台,采用IP上传送语音(Voice over IP,VoIP)技术实现话音的以太网传输。对系统的话音实际传输效果进行了仿真测试分析,结果表明,话音清晰、失真度和时延小,整体性能满足实际话音通信的要求。This paper puts forward a design scheme which uses Ethernet to implement voice transmission in the engineering appli-cation.The characteristics and key design point of voice transmission on the network are analyzed.A digital voice transmission system based on Ethernet is introduced.This system uses the embedded ARM LM3S9B96 with the network protocol microcontroller as the core platform et the VoIP （Voice over IP） to realize the Ethernet transmission of voice.The practical voice transmission effect of system is simulated et analyzed,and the results show this system has clear voice,low distortion and delay,and the overall performance can meet the practical requirements of voice communication.

关 键 词：以太网 VOIP ARM LM3S9B96 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]