(a) Suppose x[n] = 0, n < 0, n > (N 1), is an N-point sequence...
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(a) Suppose
x[n] = 0, n < 0, n > (N – 1),
is an N-point sequence having at least one nonzero sample. Is it possible for such a sequence to have a DTFT
X(ej2πk/M) = 0, k = 0, 1….. M − 1,
where M is an integer greater than or equal to N? If your answer is yes, construct an example. If your answer is so, explain your reasoning.
(b) Suppose M < N. Repeat part (a).
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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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