基于AD7656的多路并行同步音频数据采集系统设计与实现  

Design and Implementation of Multiple Parallel-sync Audio Data Acquisition System Based on AD7656

作　　者：李石亮[1] 杨俊安[1] 叶春逢[1] 

机构地区：[1]电子工程学院,安徽合肥230037

出　　处：《现代电子技术》2008年第10期167-170,173,共5页Modern Electronics Technique

基　　金：安徽省自然科学基金资助项目(050420101)

摘　　要：针对音频BSS(盲源分离)瞬时模型的多信源多传感器问题,提出一种严格的多路并行同步数据采集的ADC方案。首先介绍ADC AD7656的性能特点,提出并实现一种并行同步多路音频数据采集的系统方案。着重介绍AD7656周围电路的设计和控制逻辑的实现,解决多路采集时序及数据分离的难题;设计完成PCI采集系统的数据接口和驱动程序;采用CPLD作控制核心,简化设计,且方便应用的扩展;最后,给出测试结果。该系统已实际应用于相关课题的研究。A strict multiple parallel- sync data acquisition program of ADC has extracted to settle the multi - source and multi - sensor problem about instantaneous model of Blind Source Separation（BSS）in audio frequency. The features and func- tions of ADC AD7656 are introduced in this paper firstly,and then a program of the multiple parallel -sync audio data acquisi- tion is put forward and implemented. The design of AD7656＇s around circuits and its control logic are described in detail,the problem of time sequence and data separation is solved as well. The acquisition system＇s design of data interface and the driver is indicated. The CPLD is used as control core to simplify the design,also,it is easier to expand the application of the system. The testing results are given at last. Now,the system has been used in related research subject successfully.

关 键 词：AD7656 并行同步 S5933 音频数据采集 

分 类 号：TP335.1[自动化与计算机技术—计算机系统结构]