Suppose that you have used the Parks–McClellan algorithm to design a causal FIR linear p...

Suppose that you have used the Parks–McClellan algorithm to design a causal FIR linear phase system. The system function of this system is denoted H(z). The length of the impulse response is 25 samples, h[n] = 0 for n < 0 and for n > 24, and h[0] 0. For each of the following questions, answer “true,” “false,” or “insufficient information given”:

(b) The system has a stable and causal inverse.

(c) We know that H(−1) = 0.

(d) The maximum weighted approximation error is the same in all approximation bands.

(e) The system can be implemented by a signal flow graph that has no feedback paths.

(f) The group delay is positive for 0 < ω < π.