NUMERICAL CONSTASliS OF Sl'l-.liCll .IXP lll-.IKIXa M< 



XIV. In iiKi'KKT.vriDN of Spkixii 

 (I'lelcliLT. U., Jour. Frank. Inst., H)3, (i, Juiu-, l',t22) 



A nu-asurc of the iiUerprelation of speech was ohtaiiied t)y means 

 >f artkulation tests. Meaningless syllables were pronounced and 

 >l)ser\ers were required to record the syllables. The articulation is 



40 CO 80 100 leo t40 



SENSAnON LEVEL 



Fig. 8 



'b 40 



200O 3000 



FREQUENCr- 

 Kig. 9 



the per cent of syllables that were correctly recorded. The articula- 

 tion depends upon the sensation level of the speech (Fig. 8), and 

 upon the width of the frequency band transmitted (Fig. 9). 



The syllables that were recorded in these tests were analyzed to 

 show the articulation of the fundamental speech sounds. Fig. 10 



