Consider a discrete-time LTI filter whose impulse response h[n] is nonzero only over five consecutive time samples; the filter’s frequency response is H(ejω). Let signals x[n] and y[n] denote the filter’s input and output, respectively.
Moreover, you are given the following information about the filter:
ii) There exists a signal a[n] that has a real and even DTFT A(ejω) given by
A(e j ω ) = H(ejω) ej2ω.
(iii) A(ej0) = 8 , and A(ejπ ) = 12 .
Completely specify the impulse response h[n], i.e., specify the impulse response at each time instant where it takes a nonzero value. Plot h[n], carefully and accurately labeling its salient features.
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