354 



BELL SYSTEM ^TECHNICAL JOURNAL 



in the main melodic stream. For purposes of comparison the curves 

 of the spoken and sung sentence are enlarged and shown together in 

 Fig. 7. In the case of the sung sentence the pitch changes are in 

 definite intervals on the musical scale while for the spoken sentence 



o 



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;vx-//-v~-//-^"-.-.^^-w,\>.-v^\-v.'v^v 



I III 



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I I 



./'■■\-'/^ .;:\-'.-'^ 



•F 



' SH ' lb 



■^<'; -.'V'*'^' -.'Vvv' •y%''^'V' -''-''^^ -.-'^''^^ vvV^- 



CH 



U 17 



. TH I 8 I 



^1 I I 



/x-^'-^'^V'^v-^V'^'^''vV'^ 



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u 



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1 I IT I ' ' ■ ' '19 



Fig. 5 — Oscillogram: "Joe took Father's shoe bench out" — sung. 



the pitch varies irregularly, depending upon the emphasis given. 

 The pitch of the fricative and stop consonants is ignored in the musical 

 score, and since these consonants form no part of the music they are 

 generally slid over, making it difficult for a listener to understand the 



