Question: (Who's that filter?) Consider an LTI system with frequency response as follows H(e j) = e j a 1 aej where a is a real

(Who's that filter?) Consider an LTI system with frequency response as follows H(e j) = e j a 1 aej where a is a real number such that |a| < 1. (a) Show that |H(e j)| = 1 at all frequencies. What kind of filter is this

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