DISTORTION CORRECTION 



Network 3b 



ZCiz 



517 



i?ii = 



2(ao&i — ai)i? 



Cl2 — 



&12 



61 ' "" 4x(ao&i - a^R ' 



HZ p. A. n 



Rl3 = 



2aiig 



<2o + <22/^ 



Attenuation Linear Equation : 



-Po + FQo+PFQ, =p. 

 In physical solutions = Qo = Po', '^ Qi = \. 

 If (2o < P^Qi (^ decreases with frequency) : 



1. an = -^= 



VPo - V(2o 



fll 



\ _ 1 T V5 



1'. an = 



VPo + V(2o ' ^1 J VPo + V(2o 



VPo + VQ'o ai 1 _ 1 T VS 



;:h 



VPo - V(2o ' ^1 i VPo - V(2o 



If (2o > ^0(22 (^ increases with frequency): 



2. an = 



2'. Same formulae as in T. 

 If (3o = Po(22, P = I/Q2 (^ is constant). 



- 2(ao&i - ai)f 



H = tanB = 



(1 - ao') + (61^ - a^')P 



