Z-transform basic

Discussion in 'Homework Help' started by Anthony Quah, May 14, 2008.

  1. Anthony Quah

    Thread Starter Active Member

    Dec 1, 2007
    80
    0
    hi guy,

    need help to explain about Z-transform basic. I am currenty study Digital Signal Processing (DSP), please view the attachment..it will make it clearer..thanks
     
  2. Caveman

    Active Member

    Apr 15, 2008
    471
    0
    Those values are the givens for the problem.

    Each term is simply x(k)\delta(k-n) for a given k. So for x(-2), the term is x(-2)\delta(k-(-2)) = x(-2)\delta(k+2) = 1.5\delta(k+2), which is the first term in the answer.

    You only have to write 6 terms because all of the others are given as zero.
     
  3. mrmount

    Active Member

    Dec 5, 2007
    59
    7
    I think you ve misunderstood a bit. Are you asking how x(-2)=1.5, x(-1)=0.5, and so on ?
    If so, it is just an example function x(k) with a value of 1.5 and 0.5 at -2 and -1 respectively. And it is just substituted in the equation as Caveman has ponited out.
     
  4. Anthony Quah

    Thread Starter Active Member

    Dec 1, 2007
    80
    0
    thanks for the help..^^ i really didnt see it..
     
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