Consider the discrete-time system shown in Figure P4.32-1
where (i) L and M are positive integers.
(a) Assume that L = 2 and M = 4, and that X(ejω), the DTFT of x[n], is real and is as shown in Figure P4.32-2. Make an appropriately labeled sketch of Xe(ejω), Ye(ejω), and Y(ejω), the DTFTs of xe[n], ye[n], and y[n], respectively. Be sure to clearly label salient amplitudes and frequencies.
(b) Now assume L = 2 and M = 8. Determine y[n] in this case. Hint: See which diagrams in your answer to part (a) change.
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