广播电台慢速录音工作站设计与实现
发布时间：2019-05-21 21:38
【摘要】：广播电台为了监控广播播出质量、记录停播事故、对主持人进行考评,都需要一套慢录系统记录播出情况。同时,广告收入是目前广播电台的主要收入来源,现代广播电台节目中广告内容地位非常重要,为对广告主提供更好的服务,也需要为广告主提供便捷的播后查询功能。因此慢速录音系统对广播电台来说越来越重要。 传统的慢速录音系统是采用开盘机或者卡式磁带录音座(Cassette Tape Deck,简称“卡座”)的LP/SLP模式进行录音的。这种模式下,需要对设备进行改造,同时为了保存,还需要人工按时更换录音带,非常繁琐。并且,人工更换盒带不能保证及时性,造成部分时间段不能录音,造成监控的缺失。即使增加自动倒带及控制系统,也存在设备可靠性低、录音时间短等问题。 本文主要研究如何利用计算机系统,增加声卡和扩展存储,实现替代传统开盘机或者盒带录音的慢录系统,使系统提供更多功能的同时,保证系统更可靠、方便易用。本文详细分析了现存产品的优势和不足,提出了本系统的开发目标,然后针对节目单、录音和界面模块进行分析设计,并提供参考实现代码。本文分析了广播电台的工作模式,并提出一种节目单的实现方法；并分析目前的录音方式,提出了单台计算机实现多通道录音的方法,提供了dbFS的两种计算方法。在界面实现部分,提供了Logo显示和VU电平表的实现方法。
[Abstract]:In order to monitor the broadcast quality, record the off-broadcast accident and evaluate the host, the radio station needs a slow recording system to record the broadcast situation. At the same time, advertising revenue is the main source of income for radio stations at present. Advertising content plays a very important role in modern radio programs. It is also necessary to provide advertisers with a convenient post-broadcast query function to provide better services to advertisers. Therefore, the slow recording system is becoming more and more important to radio stations. The traditional slow recording system uses the LP/SLP mode of open disk recorder or cassette tape recorder (Cassette Tape Deck, for short. In this mode, the equipment needs to be modified, and in order to save, it is very tedious to replace the tape manually on time. Moreover, manual replacement of cassette can not ensure timeliness, resulting in part of the time period can not be recorded, resulting in the lack of monitoring. Even if the automatic rewind and control system is added, there are some problems, such as low reliability of equipment, short recording time and so on. This paper mainly studies how to use the computer system to increase the sound card and expand the storage, to realize the slow recording system instead of the traditional disk opener or cassette recording, so that the system can provide more multi-function and ensure that the system is more reliable and easy to use. In this paper, the advantages and disadvantages of the existing products are analyzed in detail, the development objectives of the system are put forward, and then the program list, recording and interface modules are analyzed and designed, and the reference implementation code is provided. In this paper, the working mode of radio station is analyzed, and an implementation method of program list is put forward, and the current recording mode is analyzed, and the method of realizing multi-channel recording by single computer is put forward, and two calculation methods of dbFS are provided. In the part of interface implementation, the realization methods of Logo display and VU level meter are provided.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP311.52
本文编号：2482419
[Abstract]:In order to monitor the broadcast quality, record the off-broadcast accident and evaluate the host, the radio station needs a slow recording system to record the broadcast situation. At the same time, advertising revenue is the main source of income for radio stations at present. Advertising content plays a very important role in modern radio programs. It is also necessary to provide advertisers with a convenient post-broadcast query function to provide better services to advertisers. Therefore, the slow recording system is becoming more and more important to radio stations. The traditional slow recording system uses the LP/SLP mode of open disk recorder or cassette tape recorder (Cassette Tape Deck, for short. In this mode, the equipment needs to be modified, and in order to save, it is very tedious to replace the tape manually on time. Moreover, manual replacement of cassette can not ensure timeliness, resulting in part of the time period can not be recorded, resulting in the lack of monitoring. Even if the automatic rewind and control system is added, there are some problems, such as low reliability of equipment, short recording time and so on. This paper mainly studies how to use the computer system to increase the sound card and expand the storage, to realize the slow recording system instead of the traditional disk opener or cassette recording, so that the system can provide more multi-function and ensure that the system is more reliable and easy to use. In this paper, the advantages and disadvantages of the existing products are analyzed in detail, the development objectives of the system are put forward, and then the program list, recording and interface modules are analyzed and designed, and the reference implementation code is provided. In this paper, the working mode of radio station is analyzed, and an implementation method of program list is put forward, and the current recording mode is analyzed, and the method of realizing multi-channel recording by single computer is put forward, and two calculation methods of dbFS are provided. In the part of interface implementation, the realization methods of Logo display and VU level meter are provided.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP311.52
【参考文献】
相关期刊论文 前1条
1 缪暑金;;统一数字声音基准电平、改善数字电视声音质量[J];中国传媒科技;2005年11期
，本文编号：2482419
本文链接：https://www.wllwen.com/wenyilunwen/guanggaoshejilunwen/2482419.html
