On explaining certain male-female differences in the phonetic realization of vowel categories  

Oleh:

Lindblom, B. ; Hoemeke, Kathryn A. ; Diehl, Randy Larry ; Fahey, R.P.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Journal of Phonetics vol. 24 no. 2 (Mar. 1996), page 187-208.

Ketersediaan

Perpustakaan PKBB Nomor Panggil: 405/JOP/24 Non-tandon: tidak ada Tandon: 1

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Isi artikel

The scaling between female and male formant frequencies tends to be highly nonuniform across vowel categories with the result that female vowels exhibit greater between-category dispersion m the FJ x F2 plane than male vowels. Vocal I tract modeling studies. strongly suggest that this greater dispersion. of female vowels is partly behavioral, rather than purely anatomical, in origin. The present study tested one explanation for this behavioral difference between females and males, viz., that without the compensatory effect of greater dispersion, the typically higher fundamental frequency (fo) of female talkers would yield reduced identifiability of vowels because of sparser harmonic sampling of spect ral envelopes. The specific question addressed was whether, all else being equal, a higher fo has the assumed deleterious effect on vowel identifiability. In two experiments, the overall effect of increasing fo beyond 150 Hz was to reduce vowel labeling accuracy. Across individual vowel categories, the effect of raising f0 varied. Auditory modeling suggests that this category variation is partly attributable to differing degrees to which a high fo obscured the distinctive auditory properties of each vowel category. Consistent with the spectral undersampling account, the performance decline at high f0s was reduced or eliminated when f0 was time-varying rather than constant.

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