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.
出处
《电子科技》
2009年第12期3-5,共3页
Electronic Science and Technology
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
Variable Gain Amplifier(VGA)
Multichannel Buffered Serial Port(McBSP)
Automatic Gain Comtrol(AGC)
Digital Signal Processor(DSP)