Determine our discussions it is apparent that an LTI system cannot produce frequencies at its output that
Question:
Determine our discussions it is apparent that an LTI system cannot produce frequencies at its output that are different from those applied in its input. Thus, if a system creates “new” frequencies, it must be nonlinear and/or time varying. Determine the frequency content of the outputs of the following systems to the input signal
x(n) = A cosπ/4 n
(a) y(n) = x(2n)
(b) y(n) = x2(n)
(c) y(n) = (cosπn)x(n)
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xn Acos 4 n a yn x 2n Acos 4 n 2 b ...View the full answer
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Related Book For 
Digital Signal Processing
ISBN: ?978-0133737622
3rd Edition
Authors: Jonh G. Proakis, Dimitris G.Manolakis
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