数字导播分布式热线录音系统

Distributed Hotline Recording System for Digital Director

热线电话不仅是广播电台节目直播、听众参与节目的重要方式,还是广播电台直播节目中的重要播出形式.目前,大多数广播电台采用的是传统的电话耦合器来实现热线电话的接入与转出,随着电台对热线节目越来越重视,热线电话的作用变得越来越重要,电话耦合器很难满足广播电台的业务需求,因此数字导播系统应运而生.传统的热线录音系统由录音服务器来完成热线录音,对录音服务器的性能要求很高,录音服务器硬件的损毁将导致所有的热线录音资源的丢失.为了改善这些不足,通过对热线录音的特点的分析和研究,设计实现了分布式的热线录音系统.采用模块化的设计方法,设计分布式架构和基于硬件语音卡来实现热线录音.分布式热线录音系统能够减少录音服务器的负荷同时能够通过分布式的存储录音文件来保障录音文件的安全.本文采用理论分析和实践论证的方式来讲解分布式热线录音系统的具体设计方法.

Hotline is not only the important way for the radio station to give radio broadcast and the audience to participate in the programs, but also the important form of live broadcast. At present, most of the radio station used the traditional phone coupler which is used to realize the hotline access and transfer. As the broadcast station payed more and more attention to the hotline programs, the hotline is more and more important, phone coupler equipment is difficult to meet the business requirements of radio station, so digital director system applications. The traditional hotline recording system used server to realize voice recording function. So it need high-performance server. The destruction of the Server＇s hardware will cause the loss of the whole file resources which is saved for hotline recording. In order to improve these deficiencies, through the analysis and study of the characteristicsof the hotline recording, the author designed the distributed hotline recording system. We used the modular design method, designed the distributed architecture. The recording system is based on the hardware sound card. The system can reduce the server load and ensure the safety of the recording files. This paper intends to design a distributed hotline recording system by the combination of theory and experiment.