ebuddy
Full Member level 3
Hi, I am learning DFT. When a continous signal gets sampled, we get as many sample points as we want. How many points do we need (N) to do DFT analysis? For my particular example, I have
t = 0:0.001:0.6;
x = sin(2*pi*50*t)+sin(2*pi*120*t);
So I get 601 samples. But what is the minimum N that is good enough to do DFT analysis?
Thanks.
t = 0:0.001:0.6;
x = sin(2*pi*50*t)+sin(2*pi*120*t);
So I get 601 samples. But what is the minimum N that is good enough to do DFT analysis?
Thanks.