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Unformatted text preview: ) sin( ) ( n n x o = results in the output )) ( sin( ) ( ) ( o o o n A n y + = . 3) Given the function ) cos 8 17 )( cos 6 10 ( cos 4 5 ) (cos " + + = V . a) Is this the magnitude function of any rational ) ( z H ? b) If the answer to part (a) is yes, find any ) ( z H that has the magnitude function given. 4) Let x[n] be a causal, N-point sequence that is zero outside the range 0 <= n <= N-1. When this x[n] is the input to the causal LTI system described by: ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! a. Is y[n] also a causal N point sequence? b. Show that this system describes an all-pass filter....
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- Spring '12
- Digital Signal Processing, LTI system theory