pass I ransrer Function To show that AM(e))=1 we observe that (z-1)= M DM Therefore AM(2AM(z) z-MD/(二-1)zMD/(z) ()DM(二 Hence Mle@ 12=AM(=)AM(z z=e Copyright C 2001, S K Mitra12 Copyright © 2001, S. K. Mitra Allpass Transfer Function • To show that we observe that • Therefore • Hence ( ) 1 ( ) 1 ( ) − =  − D z z D z M M M M A z ( ) ( ) ( ) 1 ( ) 1 1 ( ) ( ) − − − = − D z z D z D z z D z M M M M M M M M A z A z | ( )|=1 jw AM e | ( )| ( ) ( ) 1 2 1 = = w = w − j M M z e j AM e A z A z