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!

Signals and Systems - Convolution

  1. Sep 24, 2007 #1
    1. The problem statement, all variables and given/known data
    http://img166.imageshack.us/img166/1162/untitledte2.jpg [Broken]

    2. Relevant equations

    y[n] = x[n] * h[n]

    3. The attempt at a solution

    I've never done convolutions going backwards..

    right off the bat, I know I'll noly have 2 terms in the convolution sum, because of x term, but I don't have a clue how to determine the h[n]. It is not possible to write a response y as a convolution between x and h because h is unknown.

    Any ideas?
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Sep 24, 2007 #2
    You know what signal x(n) is right? -- hint: what is the value of the digital delta function
    You know how long h(n) is right? -- hint: Length of Conv = Length of x + length h -1

    Put in place holders for the values of h and grind it out just like you were doing the convolution. It is the same idea as 2+x = 3 except that you have to add several values. Use two strips of paper if that helps. Don't forget to flip the final result.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Signals and Systems - Convolution
  1. Signal and Systems (Replies: 1)

  2. Signals and Systems (Replies: 14)