基于MATLAB的FIR数字滤波器设计  

Design of FIR Digital Filter Based on MATLAB

作　　者：李红科 王庆春 LI Hongke;WANG Qingchun(College of Electronic and Information Engineering,Ankang University,Ankang 725000,China)

机构地区：[1]安康学院,电子与信息工程学院,陕西安康725000

出　　处：《微型电脑应用》2024年第5期85-87,103,共4页Microcomputer Applications

基　　金：安康学院2019年教育教学改革研究项目(ZB201902)。

摘　　要：针对信号加噪声信号采集系统中的信号处理过程,设计并实现一款基于MATLAB的FIR数字低通滤波器。简单介绍窗函数法设计FIR数字滤波器理论,举实例介绍窗函数法设计FIR数字滤波器具体步骤,通过仿真验证设计正确性。形象展示FIR数字滤波器滤波过程。加深对FIR数字滤波器设计方法和滤波器网络结构认知理解。通过仿真验证完成对输入信号加噪声信号的滤波,证明设计的正确性。A FIR digital low-pass filter based on MATLAB is designed and implemented for signal processing in signal plus noise signal acquisition system.The theory of designing FIR digital filter is introduced by window function method.It gives an example to introduce the steps of designing FIR digital filter.The correctness of the design is verified by simulation.FIR digital filter filtering process is shown.The understanding of FIR digital filter design methods and filter network structure is enhanced.The correctness of the design is verified by simulation to filter the input signal plus noise signal.

关 键 词：FIR数字低通滤波器 窗函数 单位脉冲相应 

分 类 号：TN911[电子电信—通信与信息系统]