FIR数字滤波器综合实验设计  

The comprehensive experimental design of the FIR digital filter

作　　者：姜恩华[1] 周建芳[1] 邹锋[1] 朱旋[1] JIANG Enhua;ZHOU Jianfang;ZOU Feng;ZHU Xuan(School of Physics and Electronic Information,Huaibei Normal University,235000,Huaibei,Anhui,PRC)

机构地区：[1]淮北师范大学物理与电子信息学院,安徽省淮北市235000

出　　处：《曲阜师范大学学报（自然科学版）》2023年第1期64-68,共5页Journal of Qufu Normal University(Natural Science)

基　　金：国家自然科学基金(11875031);安徽省教育厅省级示范课“数字信号处理A”项目(2153);淮北师范大学重点教学研究项目(2020xjxyj023).

摘　　要：把Matlab软件与CCS 5.5软件相结合,完成FIR数字滤波器综合实验设计.借助Matlab软件中的FIR数字滤波器设计函数,求得FIR数字滤波器的单位脉冲响应h(n).通过h(n)得到FIR数字滤波器的直接型网络结构,借助Matlab函数tf2sos,求得FIR数字滤波器的级联型网络结构的系数矩阵和增益,得到FIR数字滤波器的级联型网络结构.提出了实现FIR数字滤波的线性卷积计算方法.根据FIR低通或高通滤波器的截止频率ωc,设计了输入序列x(n).借助CCS 5.5软件,设计实现FIR数字滤波器的直接型网络和级联型网络滤波的C语言程序,很好地完成对输入序列x(n)的滤波.仿真实验结果表明,借助Matlab软件和CCS 5.5软件能够较好地完成FIR数字滤波综合实验设计.The comprehensive experimental design of the FIR digital filter is completed by the Matlab software and the CCS 5.5 software.The unit impulse response h(n)of the FIR digital filter is solved by the FIR digital filter design function in the Matlab software.The direct network structure of the FIR digital filter is solved by the h(n),the coefficient matrix and gain of the FIR digital filter cascaded network structure is solved by the function tf2sos in the Matlab,the cascade network structure of the FIR digital filter is obtained.The linear convolution solution method for the FIR digital filtering is proposed.According to the boundary cut-off frequencyωc of the FIR low pass or high pass filter,the input sequence x(n)is designed.by the CCS 5.5 software,the C language program of the FIR digital filter direct network and cascade network filtering is designed,the input sequence x(n)is filtered well.The simulation results show that the comprehensive experimental design of FIR digital filter can be completed well by the Matlab software and CCS 5.5 software.

关 键 词：MATLAB软件 CCS 5.5软件 FIR滤波器 直接型网络 级联型网络 

分 类 号：TN.911.76[电子电信]