?? freqrespex1.m
字號:
%
% m-file to illustrate the computation of frequency response of an IIR filter
% using FFT (freqrespex1.m).
%
Fs=500; % sampling frequency
b1=[1 -1.6180 1]; b2=[]; % numerator/denominator filter coefficients
a1=[1 -1.5161 0.878]; a2=[];
B=[b1; b2]; A=[a1; a2];
[b,a]=sos2tf([B A]);
n=256; % number of frequency points
dx=0;
if dx
freqz(b,a,n,Fs); % Frequency response evaluation by FFT
else
f=(0:n-1)*(Fs/2)/n;
freqz(b,a,f,Fs); % frequency response by direct evaluation.
end
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -