浅谈学习窗函数法设计FIR数字滤波器体会

FIR数字滤波器在工程上运用广泛,窗函数法设计FIR数字滤波器是典型的设计方法.目前,相关课程的教科书对窗函数法设计FIR数字滤波器这部分内容讲解不够细致,学生掌握感到有难度.本文针对窗函数法设计FIR数字滤波器的相关问题,即数字滤波器与模拟样本滤波器的关系、截断点如何取值和数字滤波器的线性相移特性,结合实例进行分析,并借助Matlab仿真软件对设计进行了分析和验证.

The Experience of Learning Window Function Designing FIR Digital Filter

FIR digital filter is widely used in engineering and the way of window function designing FIR digital filter is the typical design method.Nowadays,the relevant professional courses without explaining the way of window function designing FIR digital filter in detail,so students have difficulty to master it.This paper analyses some related questions about the way of window function designing FIR digital filter with a practical example,including the relationship between FIR digital filter and its simulated sam...