数字滤波器在FPGA中的实现，作为在数字域最普遍的一种应用，中兴给出的详细教程。-The realization of the digital filter in an FPGA, as the most common application of the digital domain, ZTE given detailed tutorial.

function [A,w,type,tao]=amplres(h) 《数字信号处理教程——MATLAB释义与实现》子程序 给定FIR滤波器系数求滤波器符幅特性-function [A, w, type, tao] = amplres (h) " digital signal processing tutorial- MATLAB Interpretation and Implementation" procedure FIR filter coefficien