ex5p8a.m

关于数字信号处理的一些matlab例程

n=[0:1:99];x=cos(0.48*pi*n)+cos(0.52*pi*n);
n2=[0:1:99];y2=[x(1:1:10) zeros(1,90)];
subplot(2,1,1);stem(n2,y2);
Y1=dft(y2,100);
magY2=abs(Y1(1:1:51));
k2=0:1:50;
w2=2*pi/100*k2;
subplot(2,1,2);plot(w2/pi,magY2);