毕业设计（论文）-基于Labview的FIR数字滤波器的设计.doc

摘要
数字滤波器分为无限脉冲响应数字滤波器(IIR)和有限脉冲响应数字滤波器(FIR),FIR数字滤波器在语音、图像、数字通信系统和计算机领域信号处理中有着广泛的应用。论文主要研究在Labview环境中实现FIR数字滤波器的设计。
论文重点描述了FIR数字滤波器的原理、方法、设计过程及窗函数法、频率取样法、切比雪夫逼近法等几种常用的设计方法。分别采用窗函数法、频率取样法、切比雪夫逼近法设计FIR数字滤波器,通过对几种设计方法的比较,得出了各自的优缺点。最后对在窗函数法下设计的FIR数字滤波器进行了仿真,得出了正确的仿真图形。 
通过对实验的分析,说明论文在几种方法下有效地实现了FIR数字滤波器的设计,所设计的FIR数字滤波器能有效地对含噪信号进行滤波处理。
关键词:FIR数字滤波器;Labview;窗函数法;频率采样法;等波纹切比雪夫逼近法
Abstract
Digital filter are divided into infinity impulse response digital filter (IIR) and finite impulse response digital filter (FIR), FIR digital filters in ics, image, munication system and in the field puter signal processing in a wide range of applications. Thesis mainly realize Labview environment in the design of FIR digital filters.
The paper describes the principle of FIR digital filters, methods, design process and window function method, frequency sampling method, chebyshev approximation method of mon design method. The author window function method were used in several different window function including rectangular window, han ning window, Kaiser window, Blake mann window and frequency sampling method, chebyshev approximation method realizes the FIR digital filters and the conclusion that various methods of FIR digital filters the frequency response of graph, through parison of several design method, it is concluded that the respective advantages and disadvantages. Finally in window function method to design of FIR digital filters under simulated, obtained the correct the simulation.
Through the analysis of experiment in that paper, several methods efficiently implemented under the design of FIR digital filters, the design of FIR digital filters can effectively to signal with noise filtering processing.
Keywords: FIR digital filters; Labview; window function method; frequency sampling method ; corrugated chebyshev approximation method
目录
第1章绪论 1
1
研究现状及内容 1
本文章节安排 2
第2章虚拟仪器介绍 3
3
Labview简介 4
LabVIEW程序设计滤波器的优点 4
小结