基于LabVIEW的数字滤波器设计

虚拟仪器代表着目前测试仪器领域的发展方向,LabVIEW是一种功能强大的虚拟仪器开发平台。数字滤波技术是数字信号处理的一个重要组成部分,滤波器的设计是信号处理的核心问题之一。本文介绍了基于LabVIEW设计数字滤波器的方法,并给出了设计实例。在LabVIEW环境下可以随时对比设计要求调整参数,有利于数字滤波器设计的最优化,有效地克服了传统设计方式中存在的滤波器系数不易调整、与硬件接口程序复杂、开发周期长等问题。LabVIEW为设计数字滤波器提供了一个可靠而有效的途径。

Design of Digital Filter based on LabVIEW

Virtual instrument has taken the lead of the field of test instrnment, LabVIEW is a powerful platform for developing virtual instrument. Digital filtering is an important part of digital signal processing, the design of digital filters is one of the kernel problems in digital signal processing. The paper introduces the method of design digital filter based on LabVIEW, examples are also been given. The parameters can be adjusted according to the design request momentarily in the LabVIEW environment,which is good for the optimization of digital filter design. LabVIEW settle the problems which existed in the trational way ,such as adjusting filter coefficient uneasily,complexity of interface program with hardware and long period to develop. LabVIEW provides a reliable and efficient way to design digital filter.