基于MATLAB程序的FIR滤波器设计实现

The Accomplishment of the Design of FIR Electric Filter Based on MATLAB Program

相对于硬件方式,采用软件方式可以通过对滤器参数的改变来调整滤波器的性能以达到实现滤波目标。以窗函数法为实例,采用MATLAB程序法介绍了FIR滤波器的设计理念,提出了一款低通滤波器的模型和仿真过程,并对带通、高通、带阻滤波器的设计进行了讨论。实践证明,此种滤波器的设计方法可以很好地实现各种FIR滤波器的设计,能在要求相位线性信道的现代电子系统设计中得到广泛应用,具有一定的工程实践价值。

Comparing handware method,by the way of software,the aim of electric filter can be realized through changing its parameters. Taking wind-function for example, the paper introduces the design idea of FIR electric filter based on MATLAB program suggests the mould and simulation process of a low-pass filter and discusses the design of belt-pass,high-pass and belt-resist electric filter. Practice proves that this kind of design methed can be used in the design of variovs FIR filter,applied widely in the design of modern electronic system which reguires phase linear channel,and has certain pratical engineering value.