Poles and zeros in z-plane

Discussion in 'General Electronics Chat' started by Management, Sep 23, 2008.

  1. Management

    Thread Starter Active Member

    Sep 18, 2007
    306
    0
    I have this input x[n] and output y[n] difference equation below.

    y[n-1] - (10/3)*y[n] + y[n+1] = x[n]

    I can change this to H(z) = Y(z)/X(z) but that y[n+1] is confusing me. I don't quite know how to deal with it. If that '+' was a '-' then I would know but how do I deal with a z^+1 (basically z)? It's positive and I never dealt with it before. They have always been negative powers of z.

    Thanks for any help you all can give me. Hints help too.

    Dru
     
  2. Management

    Thread Starter Active Member

    Sep 18, 2007
    306
    0
    No one responded so I kept thinking about it until my brain hurt. Figured it out though.
     
  3. scubasteve_911

    Senior Member

    Dec 27, 2007
    1,202
    1
    Good,

    I was actually starting to response to your question, then I starting doubting myself. So I decided to take a look at my old notes tomorrow to answer the question, now it will be forever buried :p

    Steve
     
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