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Discrete Fourier Transforms of Signals

  1. Oct 13, 2014 #1
    1. The problem statement, all variables and given/known data
    9i480g.png

    2. Relevant equations


    3. The attempt at a solution

    I'd like to see if I have the right line of thinking in my solutions:
    a. The sampling frequency should be such that no aliasing or folding occurs, so it should be twice the frequency of the original signal.
    $$x(t) = -17 -9sin(4\pi t) + 2.6sin(8\pi t) - 4cos(10\pi t)$$, I think sampled at 5Hz.
    b. There should now be four samples...but which four samples should I plot?
    c. There should be 2.5 samples right? Again how should I plot?
     
  2. jcsd
  3. Oct 18, 2014 #2
    Thanks for the post! Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
     
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