音频响度控制器的设计与实现  

Design and Implementation of Audio Loudness Controller

作　　者：王辉[1,2] 史东东 蒋灏 付泊暘[1,2] 雷鸣 刘帅 WANG Hui;SHI Dongdong;JIANG Hao;FU Boyang;LEI Ming;LIU Shuai(The 3rd Research Institute of China Electronics Technology Group Corporation,Beijing 100015,China;Beijing China Electronics Intelligent Acoustics Technology Co.,Ltd.,Beijing 100015,China)

机构地区：[1]中国电子科技集团公司第三研究所,北京100015 [2]北京中电慧声科技有限公司,北京100015

出　　处：《电声技术》2023年第3期7-10,共4页Audio Engineering

摘　　要：设计一款音频响度控制器,该响度控制器支持对多声道AES3数字音频和数字分量串行接口(Serial Digital Interface,SDI)嵌入音频进行响度监测控制。该响度控制器根据设定的不同类型的音频信号目标响度值,由响度测量计算方法逆推,对音频信号进行频域均衡,按频率划分为几个子带,再经过限幅器输出符合目标响度的音频信号,解决了音频响度控制问题,使音频响度可测可控。在节目制播和传输过程中,通过合理有效地控制节目音频响度,提高用户的响度舒适度。In this paper,an audio loudness controller is designed,which supports loudness monitoring and control of multi-channel AES3 digital audio and Serial Digital Interface(SDI)embedded audio.According to the target loudness value of different types of audio signals set,the loudness measurement calculation method is reversed,the audio signals are balanced in frequency domain,divided into several sub-bands according to frequency,and then through the limiter output audio signals conforming to the target loudness.It solves the problem of audio loudness control,so that the audio loudness can be measured and controllable.In the process of program production and transmission,the audio loudness of the program can be controlled reasonably and effectively,and the user's loudness comfort can be improved.

关 键 词：音频响度 响度控制 频域均衡 限幅器 

分 类 号：TP39[自动化与计算机技术—计算机应用技术] TM77[自动化与计算机技术—计算机科学与技术]