704 



THE BELL SYSTEM TECHNICAL JOURNAL, MAY 1957 



(6) Sample to Step Size Ratio 



Fig. 23, where the sample to step size rutio (e/Ae) is plotted in the 

 same manner as in Fig. 5, reveals the relative fiuantizing accuracy 

 accorded various pulse amplitudes. 



100 

 80 



60 

 40 



20 



10 

 8 



6 



I, — ^1 — 



-1^ 



o 



9 2 



1.0 

 0.8 

 0.6 



0.4 



0.2 



0.1 

 10' 



1-3 



* °10-2 



4 6 8 



(e/v) 



10" 



I 



4 6 6 



Fig. 23 — Pulse sample to step size ratios as a function of relative sample \ 

 amplitude, for various compandors in the //i-ensemble. The maxima exhibited by 

 these curves occur at ejV = m~^; M = 1 — exp(— m). Compare with Fig. 5. 



