414 



BELL SYSTEM TECHNICAL JOURNAL 

 VOWEL *'er" 



HENRICl ANALYSIS 



I, , l, l , l l l ll.. f l lll . | l llk 



T I I \ 1 ill 



260 300 400 500 1000 2000 3000 4000 



FREQUENCY IN CYCLES PER SECOND 



100 



70 100 



"T" — T — I — I — I — i r 

 200 300 400 500 1000 



FREQUENCY IN CYCLES PER SECOND 



Fig. 5 — Analyses of spoken vowel sounds. 



2000 3000 



