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Acoustic characteristics of American English vowels

1995/05/01 by James Hillenbrand, Laura A. Getty, Laura Arlene Getty +3 · 2,074 citations
Computer Science · Mathematics · Psychology · #Acoustics #Active listening #American English #Communication #Computer science #Degree (music) #Formant #Linear discriminant analysis #Linguistics #Mathematics #Phonetics and Phonology Research #Physics #Psychology #Speech Recognition and Synthesis #Speech and Audio Processing #Speech recognition #Statistics #Vowel

paper · doi:10.1121/1.411872

published in The Journal of the Acoustical Society of America 97(5), 3099-3111 (Acoustical Society of America)

openalex publication_date 1995/05/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

The purpose of this study was to replicate and extend the classic study of vowel acoustics by Peterson and Barney (PB) [J. Acoust. Soc. Am. 24, 175-184 (1952)]. Recordings were made of 45 men, 48 women, and 46 children producing the vowels /i,I,e, epsilon,ae,a, [symbol: see text],O,U,u, lambda,3 iota/ in h-V-d syllables. Formant contours for F1-F4 were measured from LPC spectra using a custom interactive editing tool. For comparison with the PB data, formant patterns were sampled at a time that was judged by visual inspection to be maximally steady. Analysis of the formant data shows numerous differences between the present data and those of PB, both in terms of average frequencies of F1 and F2, and the degree of overlap among adjacent vowels. As with the original study, listening tests showed that the signals were nearly always identified as the vowel intended by the talker. Discriminant analysis showed that the vowels were more poorly separated than the PB data based on a static sample of the formant pattern. However, the vowels can be separated with a high degree of accuracy if duration and spectral change information is included.

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