THE souNPs or sri-.iicii h).\ 



illustrated in llu- (li.iKram of V\^. 12. In this diagram eleven standard 

 "piire-\<)\vel " soinuls from oo to lonj; c are arranj^ed aeeordinK to the 

 lonventional "tri.inijle" and two relale<l xowel sounds ar and <t are 

 interpolatinl in their proper places. .-\ ^roiip of ei^ht records was 

 made of each of these thirteen \owel sounds, four in e.irh K^onp hy 



(ten m ) 



Fig. 12 — Classification of vowel sounds 



male voices, and the other four hy female \oices. Each of these 

 records. Plates 1 to 104 (Groups I to XIII), represents the xowel 

 sound as spoken naturally, and continuously recorded from beginning 

 to end. 



No attempt was made to record the vowels w, v, on and long i. 

 These usually have transitional characteristics which are sufficiently 

 indicated by the arrows in the diagram. The first two of these, when 

 followed by vowels, and the last two, in nearly all cases, fall into the 

 class of diphthongs. 



Following the groups of records of the "pure-vowel" sounds of the 

 diagram it was originally planned to make a group of records of the 

 semi-vowels /, m, n, wg, and r, recorded in connection with certain 

 vowels. It seemed best however to present records for the sounds ar 

 and er in connection with the standard vowel sounds as noted above 

 {ar, er, droups VII, X) and only these records of the sound r were 

 taken. The four remaining sounds were arbitrarily divided into two 

 groups because of the number of records made, and the first of these 

 (Ooup XI\') contains records of / and ng. These were made by two 

 male speakers, using the syllables loo, lee, la and ngoo, ngee, nga. 



