How do I plot fourier transform signals in Matlab

2 views (last 30 days)
To find Fourier transform (spectrum) of the following signals using MATLAB command “fourier”. To make a plot of signal and spectrum (modulus)
f(t)=e^(-|t| )*cos⁡(20t)
  2 Comments
Star Strider
Star Strider on 15 Apr 2021
Replace:
e^(-|t| )
with:
exp(-|t| )
then put a multiplication operator vetween 20 and ‘t’:
cos(20*t)
and go from there.

Sign in to comment.

Accepted Answer

Star Strider
Star Strider on 15 Apr 2021
f = @ (t) exp(-abs(t)).*cos(20*t);
figure
fplot(f)
for the Symbolic Math Toolbox, this becomes:
syms t
f(t) = exp(-abs(t))*cos(20*t);
I leave the rest to you.
  3 Comments
Star Strider
Star Strider on 16 Apr 2021
My pleasure!
If my Answer helped you solve your problem, please Accept it!
.
Lucy  Mokaya
Lucy Mokaya on 16 Apr 2021
yes, it did help with the plotting the signal, still figuring out to plot the spectrum

Sign in to comment.

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!