Consider an all-pass system whose system function is (a) Draw the direct fo...

Consider an all-pass system whose system function is

(a) Draw the direct form I signal flow graph for the system. How many delays and multipliers do you need? (Do not count multiplying by ±1.)

(b) Draw a signal flow graph for the system that uses one multiplier. Minimize the number of delays.

(c) Now consider another all-pass system whose system function is

Determine and draw a signal flow graph for the system with two multipliers and three delays.