基于以太网的串行数字语音通信系统  

Serial digital voice communication system based on Ethernet

作　　者：钟斌 黄玉水[1] 周明建[1] ZHONG Bin;HUANG Yushui;ZHOU Mingjian(School of Information Engineering,Nanchang University,Nanchang 330031,China)

机构地区：[1]南昌大学信息工程学院,江西南昌330031

出　　处：《现代电子技术》2019年第3期28-30,34,共4页Modern Electronics Technique

摘　　要：针对当前广播对讲系统通信带宽受限、音质效果一般和扩展性差等问题,在对现有广播对讲系统进行分析比较的基础上,设计一种基于以太网的串行数字语音通信系统。阐述了系统的结构及软硬件设计,采用内嵌ARM内核的以太网控制器W7500P作为主控芯片,W5500和主控芯片构成双网络接口结构,同时使用语音编解码芯片VS1063实现模拟语音信号与数字音频信号的转换以及MP3格式数字音频信号的编解码功能,从而在保证语音质量的前提下降低语音信号对通信带宽的要求,以实现语音信号的高效传输。该系统连接简单、布线方便、成本低廉。实验测试表明,系统的语音质量、实时性和可靠性均符合现场使用的要求。Since the available broadcast intercom system has the problems of limited communication bandwidth,poor tone quality and scalability,a serial digital voice communication system based on Ethernet is designed on the basis of analysis and comparison of available broadcast intercom systems.The structure,software and hardware design of the system are described.The Ethernet controller W7500P embedded in ARM core is taken as the main control chip of the system.The dual-network interface structure is composed of W5500 and main control chip of the system.The voice codec chip VS1063 is used to realize the conversion of analog voice signal to digital audio signal,and codec function of MP3 digital audio signal,so as to reduce the requirements of voice signal on communication bandwidth while ensuring the voice quality,and realize the efficient transmission of voice signal.The system has the advantages of simple connection,convenient wiring and low cost.The experimental results show that the voice quality,real-time performance and reliability of the system can meet the requirements of the field use.

关 键 词：W7500P VS1063 CAN总线 TCP/IP协议 语音编解码 以太网 

分 类 号：TN915-34[电子电信—通信与信息系统] TP399[电子电信—信息与通信工程]