DISTORTION CORRECTION 



523 



Network 7 



A- and ^-characteristics are similar to those of Networks \h and Ah. 



Rn = 



laoai'R 



aoaibi — a-^ — ai^h^ ' 



Cl2 — 



aoUibi — fl]^ — ao~&2 



Airao'^aiR 



Cn = 



Ru = lanR. 



RnR2i = Li^'Cn — Li^jCn = RuR2i — R • 



Attenuation Linear Equation: 



Po +f P2 - P<2o - PFQ2 = f(F - 1). 

 In unrestricted solutions, where ^ Qo = Po'. 

 ^ ^[Po - VQ"o ^ 2 



""" VPo + V^o' VPo + Vg;' 



61 1 _ yjP2 + 2VF0 ± a/(22 + 2Vq"o 



Mor^^U 

 Oi J fli J 



Also 



VPo + V(3o 

 VFo + V^ , _ 2 





Vp - Vc"o ' 





VPo - V(2o 



In physical solutions ao, di, bi, bz are positive; 



H = tanB = 



dl' + fl0^&2 ^ ^0^161. 



2(ai - ao^i)/ - la^b^P 



(1 - ao^) - (ai^ - &x2 + 262)/^ + b,T 



