The paper emphasizes on the discussion of the problems in implementation of network speech communication system of pc to pc in lan and the schema of secure network speech communication . the aes algorithm , the chaotic sequence and the method of chaos modulation was adopted to encrypt the voice signal and the srp protocol was used for identity authentication , so as to strengthen security . and some pivotal problems is discussed and settled , such as the compressing , restraining of reverberation and the obliteration of voice signal dither 着重考虑了局域网环境下的pc到pc的网络语音通信系统的实现的相关问题；探讨并设计了网络语音传输中的保密解决方案，采用aes算法、混沌序列密码加密方法和混沌调制方法对语音武汉理工大学硕士学位论文信号进行加密处理，选用srp协议用于身份认证，以提高网络语音通信的保密性能;并针对网络语音传输中的几个关键问题，包括语音信号的压缩、网络语音信号的静音抑止和网络语音的去抖动处理等问题进行了分析。
Specifically , this thesis includes the following work : the basic theory of speech processing and noise in speech reduce . we study the short interval character of speech signal and short interval process technology , and classify the noise and disturbance in wireless receiver terminal into 3 categories and present corresponding schemes 本文针对高质量无线语音传输的需求,对语音处理及语音降噪的基础理论、关键技术及降噪设备的实现方法展开研究,在此基础上设计实现了无线语音通信降噪器实验系统,并对实验系统的降噪效果进行了测试。
This network fire fighting broadcasting system can use existing network resource availably and implement the speech communication in the networking buildings in the garden area . it can implement the broadcasting to various buildings at the same time , and it also can implement the broadcasting with multichannel different speech data . the speech data may be the audio files or the microphone input speech 本网络消防广播系统能够有效的利用现有的网络资源,实现对园区内联网大楼的语音传输,能实现同时对各大楼的广播,且能实现在系统中同时传输多路不同的音频码流,音源可以是音频文件或麦克风语音输入。
Of course , the theories and approaches about the design of database management system and how to integrate our previous research results into the fpax ' s system will be discussed as a main point . part two : in this part , we attempt to introduce the model of the web site so as to build a teleconsultation system based on the browser / server model . via using the java language program , we hope that our telemedicine user can achieve the goal of the teleconsultation just using a www browser 本研究试图对应用java技术构筑远程医疗网进行一点初浅的探讨，希望借助java的强大功能，应用jsp / servlet建立一个远程医疗网站;应用javaapplet实现电子白板、语音传输、文字交流等功能;采用jpeg和小波算法实现图像的压缩;实现多种传输模式结构;实现病历数据的后台管理;最终建立一个适合不同操作系统的远程医疗会诊及教育系统。
