Let x1[n] be a sequence obtained by expanding the sequence x[n] = (1/4)n u[n] by a factor
Question:
Let x1[n] be a sequence obtained by expanding the sequence x[n] = (1/4)n u[n] by a factor of 4; i.e.,
Find and sketch a six-point sequence q[n] whose six-point DFT Q[k] satisfies the two constraints.
Q[0] = X1(1),
Q[3] = X1(??? 1),
where X1(z) represents the z-transform ofX1[n].
Transcribed Image Text:
k = 0, 14, 18..... x\n/4]. 0. otherwise. x1[n] =
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Related Book For
Discrete Time Signal Processing
ISBN: 978-0137549207
2nd Edition
Authors: Alan V. Oppenheim, Rolan W. Schafer
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