HW2-A Seung Seob Lee ECE301Fall2008mboutin - Rhea

A CT periodic signal sampled at different frequencies

It is known that y=cos(x) in CT is a periodic function, and this periodic CT function was sampled at different frequencies in DT.

%%%%%%%%DT input%%%%%%%%%
n=1:1:40


y=cos(pi/8*n);
figure(1)
plot(n,y)


y2=cos(3*n);
figure(2)
plot(n,y2)

FIGURE(1) shows a periodic DT graph

FIGURE(2) not a periodic graph