Let x[n] be a causal, N-point sequence that is zero outside the range 0 ? n ?

Question:

Let x[n] be a causal, N-point sequence that is zero outside the range 0 ? n ? N ? 1. When x[n] is the input to the causal LTI system represented by the difference equation?

y[n] ? ? y[n ? 2] = x[n ? 2] ? ? x[n],

the output is y[n], also a causal, N-point sequence.

(a) Show that the causal LTI system described by this difference equation represents an all-pass filter.

(b) Given that?

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Discrete Time Signal Processing

ISBN: 978-0137549207

2nd Edition

Authors: Alan V. Oppenheim, Rolan W. Schafer

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Question Posted: May 26, 2011 02:56 AM

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Let x[n] be a causal, N-point sequence that is zero outside the range 0 ? n ?

Question:

N-1 > x[n]]? = 5, n-0 Determine the value of N-1 Συνοl. n=0

Step by Step Answer:

a b Taking the ztransform of both sides and rearranging Yz 2 H 2 Xz 112...View the full answer

Discrete Time Signal Processing

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