Which of the following is true about the filtering operation on x(n)?
A. Linear
B. Time variant
C. None of the mentioned
D. Linear and time invariant
Answer:A
Which of the following is true about the filtering operation on x(n)?
A. Linear B. Time variant C. None of the mentioned D. Linear and time invariant
Explanation: Although the filtering operation on x(n) is linear and time invariant, the down-sampling operation in combination with the filtering results in a time variant system.