Allpass Transfer Function To show that AM(e)=1 we observe that Av(2-1)=±=MDv(=) v/( Therefore AM/(二)AM(二-)= - MDM 2 MDM 2 2 DM(=) 2 Hence Ar(e0)2=AM(=)A1(x1 Iz=e Copyright C 2001, S K Mitra7 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 j AM e | ( )| ( ) ( ) 1 2 1 = =  =  − j M M z e j AM e A z A z