基于AIC23语音接口及AGC方法的实现  

Realization of the Audio Interface and AGC Method Based on AIC23

作　　者：丁丹[1] 

机构地区：[1]北京装备指挥技术学院光电装备系,北京101416

出　　处：《电子科技》2009年第12期3-5,共3页Electronic Science and Technology

摘　　要：针对语音接口常见的信号幅度动荡的问题,设计了基于语音编解码芯片AIC23和数字信号处理器TMS320VC5416的语音接口。研究了基于AIC23内部可变增益放大器的语音信号自动增益控制(AGC)方法,所设计的语音接口电路简单、音质清晰、音量稳定。To solve the common problem of fluctuation of the amplitude of the audio signal at the audio interface,this paper designs an audio interface based on audio codec AIC23 and digital signal processor TMS320VC5416.The method of automatic gain control（AGC）of the audio signal based on the variable gain amplifier in AIC23 is studied.The audio interface designed has a simple circuit,clear tone and steady volume.

关 键 词：可变增益放大器 多通道缓冲串口 自动增益控制 数字信号处理器 

分 类 号：TN722[电子电信—电路与系统]