designbutworth.m

来自「从MatlabSimulink模型到代码实现」· M 代码 · 共 8 行

function  designbutworth
%designbutworth.m
%used to design 16-order Butterworth filter,which has a 1.5KHz-5KHz passband with 
%a sampling rate 16KHz.
Fs=16;
[b,a]=butter(8,[1.5/(Fs/2)  5/(Fs/2)],'bandpass')
freqz(b,a,512,16000)