导　　师： 李鹏

学科专业： 081001

授予学位： 硕士

作　　者： ;

机构地区： 西安电子科技大学

摘　　要： 随着现代电子技术的不断发展,公众对于广播音质的要求日益增高,音频信号的数字化已经成为公共广播设备发展的趋势。通常的广播设备需要工作人员现场值守,随着网络技术的日趋成熟,网络化的多路数字音频监测与接入控制系统,使工作人员能够通过上位机监控软件界面对广播设备进行实时监测和远程控制输出信号的切换,避免现场值守,具有良好的应用前景。 本文所设计的多路数字音频监测与接入控制系统,其功能主要由两大模块实现:音频信号采集处理模块;控制与通信模块。音频信号采集处理模块的任务是对输入信号的解码和信号质量的监测,通过自动倒换程序来切换符合要求的信号。控制与通信模块负责与采集处理模块的通信,以及利用TCP//IP网络技术和基于VDK的网络通信程序,通过以太网接口与上位机交互,是采集处理模块与上位机交流的桥梁。最后系统经过测试,性能良好,满足要求。 With the fast development of modern electronic technology, the public requirement for broadcasting quality is highly increased. The degitization of audio signals has already become the tendency of the public broadcasting equipment. The traditional broadcasting equipment need staff always on duty in the machine room, but along with the maturing of network technology, the networked system of multi-channel digital audio monitoring and access control make the staff enable to monitor the broadcasting equipment in real-time and remotely control to switch the output signal through the PC software, so that they can avoid working on duty in the machine room. The system will be well applicated in future. The system of multi-channel digital audio monitoring and access control is designed in this paper, and its function is achieved mainly by two modules: module of audio signal acquisition and processing; module of control and communication. The task of first module is to decode the input signal and monitor the signal quality, and also utilize automatic switching program to switch signal in order to satisfy the standard. The second module is responsible for communicating with the first module and interacting with the host computer through ethernet port that utilize TCP//IP network technology and network communication program based on VDK. It is the bridge between the first module and the host computer. Finally, this system had a good performance and satisfied the requirement after the test.

关 键 词： 自动监测 以太网接口 上位机

领　　域： [电子电信] [电子电信]