1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

DSP, going from freq domain to time domain

  1. Dec 4, 2013 #1
    1. The problem statement, all variables and given/known data

    X(w) = 3cos(2w) + 2 sin(3w)

    calculate x(n)

    2. Relevant equations

    x(n) = (1/2pi) ∫ X(w) e^(jwn)dw

    3. The attempt at a solution

    When integrating over 0 to 2 pi, my answer is 0. Which would not be the case.
  2. jcsd
  3. Dec 4, 2013 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Can you please show your calculation? In particular, be careful with the cases ##n=2## and ##n=3##.
  4. Dec 4, 2013 #3
    It for sure shouldn't be 0 :D

    You must've made a mistake with the integration. Do you know what the answer SHOULD be?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted