THE ROLE OF PERCEIVED SPEAKER IDENTITY IN F0 NORMALIZATION OF VOWELS

被引:81
作者
JOHNSON, K
机构
[1] Speech Research Laboratory, Department of Psychology, Indiana University, Bloomington, Indiana
关键词
D O I
10.1121/1.399767
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
In the experiments reported here, perceived speaker identity was controlled by manipulating the fundamental frequency (FO) range of carrier phrases in which speech tokens were embedded. In the first experiment, words from two “hood”-“hud” continua were synthesized with different FO. The words were then embedded in synthetic carrier phrases with intonation contours which reduced perceived speaker identity differences for test items with different FO. The results indicated that when perceived speaker identity differences were reduced, the effect of F0 on vowel identification was also reduced. Experiment 2 indicated that when items presented in carrier phrases are matched for speaker identity and FO with items in isolation, there is no effect for presentation in a carrier phrase. Experiment 3 involved the presentation of vowels from the “hood”-“hud” continuum in two different intonational contexts which were judged to have been produced by different speakers, even though the FO of the test word was identical in the two contexts. There was a shift in identification as a result of the intonational context which was interpreted as evidence for the role of perceived identity in vowel normalization. Overall, the experiments suggest that perceived speaker identity is a better predictor of vowel normalization effects than is intrinsic FO. This indicates that the role of FO in vowel normalization is mediated through perceived speaker identity. © 1990, Acoustical Society of America. All rights reserved.
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页码:642 / 654
页数:13
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