FIR滤波器的等波纹最优化设计

Equality ripple design of FIR filter

介绍一种基于MATLAB的数字FIR滤波器设计方法——切比雪夫等波纹逼近法.比较了窗函数设计法、频率采样设计法和切比雪夫等波纹逼近法在设计数字FIR滤波器中的性能差异.应用MATLAB进行仿真实验,证明了切比雪夫等波纹逼近法的可行性与优越性.

This paper introduces a design method of FIR digital filter based on the MATLAB — Chebyshev equality ripple approach method.Performance difference in the design of digital FIR filter is given through the comparison between window function design method,frequency sampling design method and optimization design method Chebyshev equality ripple approach method.In this paper,MATLAB is used in the simulation experiment,and it verifies the feasibility and the advantages of the method.