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语音通信
    Model and Virtual Implementation of Voice Communication over LAN Based on Protocol SIP
    局域网SIP语音通信模型及虚拟实现
    Design of Ethernet-based voice communication system applying embedded system
    基于嵌入式系统的以太网语音通信系统设计
    Group Voice Communication Performance Research and Improvement
    群组语音通信性能的研究与改进
    By means of analyzing the principles of voice communication employing P2P techniques, this paper expounds on the solutions to some vital problems in the P2P voice transfer.
    通过对P2P技术下的语音通信原理的分析,详细地阐述了P2P语音传输过程中应解决的一些关键性技术.
    As a result of the integration of telecommunication technology and computer technology,VoIP(Voice over IP)represents the orientation of voice communication technology in the future.
    VoIP(Voice over IP)是电信技术和计算机技术结合的产物,是未来语音通信技术的发展方向。
    This paper designs and realizes a soft phone based on SIP protocol and Windows environment. It introduces SIP protocol first,including its function,basic system composition and message format,then designs three modules of the software: user interface module,SIP UA module and voice communication module,and realizes the soft phone by using programming tool Visual C++ 6.0,SIP stack OSIP and EXOSIP,RTP stack WinRTP.
    首先介绍了SIP协议,包括其功能、系统基本组成、消息格式,然后设计了软件的三大模块:用户界面模块、SIP UA模块、语音通信模块,并使用编程工具V isual C++6.0、SIP协议栈OSIP、EXOSIP及RTP协议栈W inRTP实现了该软电话。
    A novel method of speaker identification in digital voice communication
    一种新的数字语音通信中说话人身份认证方法
    Based on the researches on the UWA image transmission and UWA digital voice communication carried out by UWA Communication Group of Xiamen University, this dissertation focuses on the transmission techniques for UWA Email. By using digital communication mode, we have realized the transmission of underwater information, the connection of the wireless repeater.
    本论文是在厦门大学水声通信课题组水声图象传输和水声数字语音通信研究的基础上,研究水声电子邮件传输技术,采用数字通信方式实现水下信息的传输,实现无线中继接入,进而达到与移动通信网和Internet网的互联的目的,研制成具有自主知识产权的水声电子邮件收发系统,为将来海洋水下组网打下良好的基础。
    The group voice communication is precisely a new technology and the new application which emerges under such request, it uses the inexpensive internet network band width resources, packs the voice signal to data package and transmit in the network.
    群组语音通信正是在这样的要求下兴起的一门新技术和新应用,它利用廉价的Internet网络带宽资源,把语音信号打包成数据包的形式在网络上传输。
    The group voice communication is very good realization network conference, has greatly saved the correspondence expense for users.
    群组语音通信很好的实现了网络语音会议,为用户大大节省了通信费用。
    The paper makes a deeply and systematic analysis of the principle about voice communication on network, and explains voice collection, compress and decompress, transmission and so on. It elaborates on the process about the Delphi software development and gives a simple instance of the voice communication.
    文章对网络环境下语音通信的原理进行了系统地分析,详细阐述了语音的采集、语音数据的压缩和解压缩、语音数据的传输等关键性技术和Delphi6实现语音软件的开发过程,并给出了相应的简单实例.
    The pcAnywhere is selected as the remote control software to supervise,control and operate the remote computers,and the Microsoft Portrait software is used for IP address acquisition,information report and voice communication.
    首先选择pcAnywhere作为远程控制软件进行远程计算机监视、控制和操作,选择了MicrosoftPortrait软件进行IP地址获取、报告信息及语音通信;
    In order to realize voice communication over local area network based on protocol SIP,according to rfc3261,we present the configuration of the SIP voice communication system,design the software of SIP user agent and implement the server. Then we test the network model over the network which is built upon virtual machines.
    为了在局域网内以SIP为控制协议实现语音通信,本文按照RFC3261的规定,提出SIP语音通信系统的构架,进行相应的SIP用户终端软件的开发和服务器的实现,并在以虚拟机构建的网络中对该网络模型进行了测试。
    Aim To identify the ID of the speaker in digital voice communication in order to assure the security of information which is transmited in the network.
    目的为保证网络信息交互的安全,在数字语音通信中对说话人进行身份认证。
    A real-time voice communication system based on Ethernet is designed by using the embedded RTOS(Real-Time Operating System) μC / OSⅡ. The system consists of different modules,such as voice interface,web interface,memory system,keyboard and display.
    应用嵌入式实时操作系统μC/OSⅡ设计了基于以太网的实时语音通信系统,系统由语音接口、网络接口、存储系统、键盘及显示等模块组成。
 

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