examp51.m

来自「ADSP TOOLBOX: Version 2.0 and gui m-file」· M 代码 · 共 13 行

clc,echo on 
%EXAMPLE 51 
n=0:19;x=1+0*n;
F=-0.5:0.005:0.5; W=2*pi*F;
H1=freqz([x],[1 zeros(1,19)],W);
H2=freqz([x.*cos(0.3*n*pi)],[1 zeros(1,19)],W);
H3=freqz([x.*cos(2.3*n*pi)],[1 zeros(1,19)],W);
plot(F,abs(H1)),grid,pause(2)
plot(F,abs(H2)),grid,pause(2)
plot(F,abs(H3)),grid
echo off %end of example