摘要:数字滤波器运用普遍,在家用电器范畴、医疗设施范畴、军事科技范畴、各类通信设施、雷达监控设施、载具导航系统以及飞机坦克潜艇等内部电控系统都需要数字滤波器。在现代社会中,但凡有电子设备参与的范畴,都需要数字滤波器所施展的庞大作用。本文首先简略引见数字信号处理中滤波器的作用和前景;其次介绍了FIR数字滤波器的根本共性;再次介绍用MATLAB设计FIR数字滤波器的办法及其基本原理,包罗窗函数法、频率采样法和最优等波纹法并总结了上述几种方法各自的优缺点;最后通过MATLAB对三种方法进行仿真处理并给予解释。91903
毕业论文关键词:MATLAB,FIR数字滤波器
Abstract: Digital filters are widely used in the field of household appliances, medical equipment, military technology, all kinds of communications equipment, radar monitoring equipment, vehicle navigation systems and aircraft tank submarines and other internal control system are inseparable from the digital filter。 In modern society, where there is electronic equipment to participate in the field, are inseparable from the digital filter played a huge role。This paper first introduces the function and prospect of the filter in digital signal processing。 Secondly, it introduces the basic characteristics of FIR digital filter, and then introduces the method and basic principle of designing FIR digital filter with MATLAB, including window function method, frequency sampling method And the optimal wave method and summarize the advantages and disadvantages of each of the above methods。 Finally, three methods are simulated and explained by MATLAB。源G于J优L尔V论N文M网WwW.youeRw.com 原文+QQ75201`8766
Keywords: MATLAB,FIR digital filter
目 录
1 序论 4
1。1 研究数字滤波器的意义与背景 4
1。2 MATLAB软件简介 4
1。3 主流数字FIR滤波器的硬件实现方法 6
1。4 本文的研究内容 6
2 数字FIR滤波器的基本特性 6
3 用MATLAB设计FIR数字滤波器的三种方法 10
3。1 窗函数法 10
3。2 频率采样法 12
3。3 最优等波纹法 12
3。4 分析与小结 15
4 三种方法下MATLAB的仿真程序与仿真图 15
4。1 运用MATLAB窗函数设计FIR数字滤波器 15
4。2 运用MATLAB频率采样函数设计FIR数字滤波器 17
4。3 运用MATLAB最优等波纹法设计FIR数字滤波器 18
结论 20
参考文献 21
致谢 23
1序论
1。1研究数字滤波器的意义与背景