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BELL SYSTEM TECHNICAL JOURNAL 



compounds are omitted will be very closely the same as those obtained 

 by lists in which such sounds occur. In view of this, and also 

 because their inclusion would greatly extend the time needed for 

 testing, compound consonants have been omitted. 



In conversational or written speech some of the sounds are used 

 much more frequently than others, whereas in the testing lists each 

 sound is used the same number of times. Does this procedure lead 

 to essentially different articulation values, for the various sounds, 

 from those obtained by using the sounds in proportion to their fre- 

 quencies of occurrence in speech? 



TABLE VIII 

 Articulation of Sounds of Equal vs. Unequal Occurrencr 



