d.m

信号与系统课程设计全部内容

n=256
dt=10/256;t=[1:256]*dt;
f=[ones(1,256/2),zeros(1,256/2)];
wf=40
nf=64
w1=linspace(0,40,64);dw=40/(64-1);
F1=f*exp(-j*t'*w1)*dt;
w=[-fliplr(w1),w1(2:64)];
F=[fliplr(F1),F1(2:64)];
plot(w,abs(F),'linewidth',1.5),grid on