If the z-transform of the system is given by H (z) = a+z-1/1+az-1 . Where a is real valued:
A. A low pass filter
B. A high pass filter
C. An all pass filter
D. A bandpass filter
Answer:C
If the z-transform of the system is given by H (z) = a+z-1/1+az-1 . Where a is real valued:
A. A low pass filter B. A high pass filter C. An all pass filter D. A bandpass filter
Explanation: The discrete time frequency response will be aperiodic and does not depend on the frequency and the transfer function will be representing the all pass filter.