等波纹线性相位FIR滤波器的1种设计方法

A method of designing of equiripple linear-phase FIR filter

介绍了一种用Remez函数设计等波纹线性相位FIR滤波器的设计方法,并利用MATLAB强大的功能进行仿真。仿真结果表明,设计结果的各项性能指标均达到较高的要求,并且证明该方法是一种优化的设计方法。在同样的技术指标下,用这种方法设计得到的滤波器要比窗函数法和频率采样法得到的滤波器的长度均要小,而且设计过程简单易行。

This paper briefly introduces a method of designing equiripple linear-phase FIR filters using Remez function. And the method is simulated based on MATLAB. The result of simulation satisfies the designing requirements, and the method is proved to be an optimum design method. With the same parameters, the length of filter with the method is short than that with WINDOW function method and frequency sampling method. Furthermore, it is simple and easy to use.