基于LabVIEW的数字信号处理虚拟实验的构建  

Building virtual experiment of digital signal processing based on LabVIEW

作　　者：全晓莉[1] 周南权[2] 李双[1] 余永辉[1] 

机构地区：[1]重庆理工大学电子信息与自动化学院,重庆400054 [2]重庆航天职业技术学院电子工程系,重庆400021

出　　处：《实验技术与管理》2011年第10期82-84,共3页Experimental Technology and Management

基　　金：国家科技部863项目资助(2006AA04Z433);重庆市教改重大项目(0816015)

摘　　要：运用LabVIEW开发环境设计出一套用于数字信号处理教学的虚拟演示实验系统,介绍了其中的奈奎斯特抽样定理和圆周卷积与线性卷积关系的虚拟演示实验。该实验可以动态地演示信号参数的改变对实验现象的影响。基于LabVIEW的数字信号处理虚拟实验应用于课程教学中,既丰富了教学方法和手段,又提高了教学质量,开拓了一个全新的教学平台。In view of the digital signal processing＇s problems in learning and teaching,a set of virtual demonstration experiment system for digital signal processing teaching is designed based on LabVIEW programming environment,and two virtual demonstration experiments which are Nyquist sampling theorem and the relation between circular convolution and linear convolution are introduced.Teachers could dynamically demonstrate that the variable signal parameters have an effect on experiment phenomenon in these teaching programs.Practical application shows that the application of LabVIEW in the digital signal processing teaching has greatly diversified the teaching methods and means,improved the quality of instruction and strengthened the interest and initiative of students＇ study.The virtual instrument design is used in the course of theoretic teaching to develop a new teaching platform,which has great positive role to improve the diathesis of students.

关 键 词：虚拟实验 数字信号处理 奈奎斯特抽样定理 圆周卷积 线性卷积 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] G434[自动化与计算机技术—计算机科学与技术]