NATURE OF LANGUAGE JONES 



491 



forcible expulsion of breath, the letter " h " is prefixed to the vowel. 

 " L " and " r " partake of some of the characteristics of vowel sounds 

 and are usually classified as semivowels. 



The stop consonants are those accompanied by the formation of 

 a stop in some part of the mouth. For example, " b," " p," and " m " 

 are all characterized by a stop formed with the two lips. The con- 



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FREQUENCY 



ANALYSIS OF VOWEL SOUNDS (SUNG) 

 Fig. 2 



sonant sound " p " is simply produced by pressing the lips together 

 and then speaking a sound which is begun by having the breath part 

 the lips somewhat forcibly. If the vocal cords are vibrated at the 

 same time, the sound " b " is produced. This accompanying vibra- 

 tion of the cords is the characteristic difference between "b" and 

 " p." For the sound " m " the stop is the same and the cords vibrate. 



