基于DSP的多路音频信号采集与处理设计  

Design of Multi-Channel Audio Signal Sampling and Processing Based on DSP

作　　者：王剑飞[1] 程耀瑜[1] 

机构地区：[1]中北大学信息与通信工程学院,山西太原030051

出　　处：《光电技术应用》2013年第4期72-75,共4页Electro-Optic Technology Application

摘　　要：设计了一种基于DSP的实时语音处理系统,并结合TMS320DM642与音频CODEC芯片TLV320AIC23B的接口特点,详细阐述了多通道音频串行端口(McASP)和4片TLV320AIC23B连接方法。同时给出了详细的软件实现方法,从而实现4路音频信号的同时采集。对采集到音频信号进行滤波算法处理,并通过CCS3.3在计算机上实时显示处理后的波形,实现了一个完整的音频信号处理系统,可以对模拟音频信号采集、滤波和回放。A real-time audio processing system based on digital signal processor（DSP） is designed.With the interface characteristics of TMS320DM642 and audio CODEC chip TLV320AIC23B,the connection meth ods of multi-channel audio serial port（McASP） and four pieces of TLV320AIC23B are introduced in detail.And the software implementation methods are given to sample quadruple audio signals simultaneously.The signals are processed by filtering algorithm and processed waveforms are displayed on computers by CCS3.3 at real time.A whole audio signal processing system is completed so that stimulated audio signals can be sampled,fil tered and replayed.

关 键 词：DSP TLV320AIC23B 多通道音频串行端口 FIR滤波 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]