多通道音频采集前端硬件设计  

作　　者：王小稳[1] 

机构地区：[1]国家广播电视总局中央广播电视发射二台

出　　处：《科技创新与应用》2020年第8期96-98,共3页Technology Innovation and Application

摘　　要：现有技术中,通常用DSP芯片来对音频进行MP3压缩处理。当一片DSP芯片内要同时运行多个压缩程序来完成多路音频同时压缩时,由于内部资源不够,是无法实现的。但随着广播事业的发展,多通道音频监测的路数逐渐增多,面对多路音频采集压缩,采用一个芯片压缩一路音频的方法,会造成严重的资源浪费,增加设备的成本,同时,会增大电路的规模及设计难度。因此,亟待解决这个问题。是对DGN-32F数字音频电平监测系统[1]硬件设备的升级换代。In the existing technology,DSP chip is usually used to compress audio with MP3.When multiple compression programs are run at the same time in a DSP chip to complete multi-channel audio compression at the same time,it can not be realized because of the lack of internal resources.However,with the development of broadcasting,the number of multi-channel audio monitoring is gradually increasing.In the face of multi-channel audio acquisition and compression,using one chip to compress one audio will cause a serious waste of resources,increase the cost of equipment,and at the same time,will increase the scale of the circuit and the difficulty of design.Therefore,it is urgent to solve this problem.It is the upgrading of the hardware equipment of the DGN-32F digital audio level monitoring system.

关 键 词：多路音频压缩 音频监测 多路音频采集 MP3压缩 

分 类 号：TN912.3[电子电信—通信与信息系统]