数字信号处理课程论文--IIR和FIR数字滤波器的设计及其结构研究 

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1、数字信号处理课程论文题目IIR和FIR数字滤波器的设计及其结构研究授课教师盖宁学生姓名学号专业教学单位完成时间2014年7月5日15目录一IIR和FIR数字滤波器的意义···············································1二IIR和FIR数字滤波器设计的基本过程、方法及其优缺点的比较·················22.1IIR数字滤波器设计的基本过程··········································22.1.1模拟滤波器的设计及方法···················

2、·························22.2IIR数字滤波器的两种设计方法··········································32.2.1脉冲响应不变法的设计方法··········································32.2.2双线性变换法的设计方法············································32.3脉冲响应不变法和双线性变换法的优缺点比较····························42.3.1脉冲响应不变法优缺点··

3、············································42.3.2双线性变换法的优缺点·············································4三线性相位FIR数字滤波器的基本特性、设计方法和优缺点比较··················43.1线性相位FIR数字滤波器的基本特性·····································43.2线性相位FIR数字滤波器的设计方法·····································53.2.1窗函

4、数法的设计方法················································53.2.2频率取样法的设计方法··············································63.3窗函数法和频率取样法的优缺点比较····································6153.3.1窗函数的优、缺点··················································63.3.2频率取样法的优、缺点······················

5、························7四IIR和FIR数字滤波器的基本结构研究·······································74.1IIR数字滤波器的基本结构··············································74.2FIR数字滤波器的基本结构·············································8五IIR和FIR数字滤波器的主要优缺点·········································95.1IIR

6、滤波器与FIR滤波器的分析比较·····································95.2IIR数字滤波器的主要优缺点···········································105.3FIR数字滤波器的主要优缺点··········································10六滤波器的设计··························································10七设计总结·····························

7、································12参考文献15摘要随着计算机技术和微电子技术的发展得到了飞速的发展，如今数字信号处理技术受到了人们的广泛关注，其理论及算法被广泛应用于语音图象处理、数字通信、谱分析、模式识别、自动控制等领域。数字滤波器是指输入、输出均为数字信号，通过数值运算处理改变输入信号所含频率成分的相对比例，或者滤除某些频率成分的数字器件和程序。经典数字滤波器从滤波特性上分类，可以分成低通、高通、带通和带阻等滤波器。根据数字滤波器冲激响应的时域特性，可以分成无限脉冲响应数字滤波器(简称IIR)和有限脉冲响应数字

8、滤波器(简称FIR)，IIR和FIR数字滤波器的设计方法及其结构各不相同。一.IIR和FIR数字滤波器设计的意义数字滤波器