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Description: 实现局域网内的语音通行，基于UDP的简单聊天程序，运用了多线程技术-Realize LAN voice traffic, a simple UDP-based chat program, using a multi-threading technology
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Size: 1910784 |
Author: yaoshunchen |
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Description: 网络多媒体通信
1、编制一个网络多媒通信软件，实现：
在发送端采集话筒声音，通过网络实时传输到接收端，并在接收端播放出来。
2、通过使用TCP、UDP、变更分组大小来对比收发端声音同步情况及播放质量。
本实验技术不同于课上所讲的回调函数，利用了MFC的消息处理机制，用消息处理函数替代了回调函数，但整个流程是一样的。本程序采用C/S模式，其中Server端为项目PhoneToFile，Client端为项目Client，Server端的功能为采集声音数据并发送给客户端，Client端将收到的声音数据播放。在测试中只需在Server端打开Server程序并播放音乐或用话筒录音，在Cliet端打开Client程序，用耳机就可以听到音乐或录音。-Internet Multimedia Communications
1, the preparation of a network of multi-media communications software to achieve:
In the transmitter microphone capture sound, real-time transmission through the network to the receiving side, and playing out at the receiving end.
2, using TCP, UDP, change the packet size to compare the situation and simultaneously send and receive-side audio playback quality.
The experimental technique is different from the class talked about the callback function, use of MFC s message handling mechanism is replaced by the message handler callback function, but the whole process is the same. This program uses C/S mode, in which Server-side for the project PhoneToFile, Client-side for the project Client, Server-side functionality for the capture audio data and sent to the client, Client-side will receive the voice data playback. In the test, simply open the Server in the Server-side program and play music or microphone recording, open the Client program
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Size: 66560 |
Author: zym |
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Description: 本设计综合应用Windows低级音频API、G.729A编码算法、SOCKET编程、多线程编程等技术实现了在局域网PC机点对点的窄带全双工语音通信系统。界面通过MFC实现。为了确保发送应用层协议和聊天信息的正确性，采用TCP方式发送交互信息。语音模块的启动与关闭由交互的命令控制。考虑到语音数据需要延时小，这里用UDP方式发送。-The comprehensive application of the design of Windows low-level audio API of G.729A encoding algorithm, SOCKET programming, multi-threaded programming technology to achieve a PC in the LAN point-to-point narrow-band full-duplex voice communication system. Interface through the MFC. In order to ensure the correctness of the information of sending application layer protocol and chat, using the TCP send interactive information. The voice module startup and shutdown command and control by the interaction. Taking into account the voice and data delay, here sent using UDP.
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Size: 207872 |
Author: 闫利霄 |
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Description: ZXJ10局用数字程控交换机具有长话、市话或长市合一功能。ZXJ10具有强大的组网功能，在电信交换网中可以作为端局、汇接局、长途局、关口局来使用，还可以作为独立的STP或综合的STP来使用，另外还可以作为PBX来使用。ZXJ10既可以建立单模块局，也可以建立多模块局。母局与各交换模块间可以采用高速光纤连接。可以采用多种速率的内外置式PDH和SDH设备进行组网。组成PDH、SDH或二者混合的各类环形网、链形网、树形网络及混合形的网络。
传统的电话网紧电路交换方式传输语音，所要求的传输宽带为64kbit/s。而所谓的VoIP是以IP分组交换网络为传输平台，对模拟的语音信号进行压缩、打包等一系列的特殊处理，使之可以采用无连接的UDP协议（用户数据报协议）进行传输。为了在一个IP网络上传输语音信号，要求几个元素和功能。最简单形式的网络由两个或多个具有VoIP功能和设备组成，这一设备通过一个IP网络连接。
由此可看出，实际生活要实现ZXJ10和VOIP互通，还需通过SDH来传输，并且要采取保护措施。而由于程控交换为电路交换，而VOIP为分组交换，故需要在传输时设置媒体网关转化，通过中继达到互连的目的。
-ZXJ10 Bureau digital PBX with long distance , local or long- City One feature. ZXJ10 with powerful networking functions in the telecommunications switching network can be used as end office , tandem , toll office , gateways to use, but also can be used as stand-alone or integrated STP STP use , also can be used as a PBX . ZXJ10 can either build a single module, the module can also create multi- bureau . Among female office switching module can be used with high-speed fiber-optic connections. You can use a variety of the external rate of PDH and SDH networking equipment . Composed of PDH, SDH , or a mixture of both types of ring network , chain mesh , tree-shaped networks and hybrid networks .
Conventional circuit-switched telephone network tight voice, broadband transmission is required 64kbit/s. The so-called VoIP network based on IP packet-switched transmission platform , the analog voice signal compression , packing and a series of special treatment, so that the connection can be u
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Size: 1131520 |
Author: |
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Description: 本软件是集合信息聊天，文件传输，语音呼叫，用于局域网的手机通讯工具，类似飞鸽传书。完全可以编译，运行！有完整注释！
注意：手机通过wifi连入局域网
本软件设计的以下知识点理解不算太难！
1、短信息：UDP协议
2、语音传输：TCP协议
3、文件传输：多线程 -This software is a collection of information chat, file transfer, voice call for a mobile communication tool for LAN, similar to Dove Chuanshu. Completely compile, run! Complete notes!
Note: the phone through the WiFi even into the local area network
The software design of the following knowledge is not too difficult to understand!
1, short message: UDP protocol
2, voice transmission: TCP protocol
3, file transfer: multi thread
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Size: 4411392 |
Author: 蔚听 |
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