Hi everyone. I have a set of samples (x(n)'s) in a table corresponding to a mysterious signal x(t). What I am trying to do is display the frequency spectrum of this set of samples with a certain resolution.
I am confused on how to actually plot this frequency spectrum when I am just given a table of values, an fs, and using a certain N value.
So for example, say I was given a set of samples like this:
0 1 2 3 4 5 6 7 8 9 0 1.25 0.57 -0.29 -0.78 -0.70 0.37 0.87 0.49 -0.18
How would I plot the frequency spectrum with say a resolution of 50 hz?
I went about it like this, (keep in mind this code pertains to a set of samples that is 1251 long, I created the above example for ease of use), however my graph doesn't look right as the magnitudes shouldn't go above 1 since the amplitudes never go above 1?
signal = xt;
N = length(signal);
fs = 25000;
fnyquist = fs/2;
title('Double-sided Magnitude spectrum');