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- W2085041337 abstract "Developmental trends of durational and spectral parameters of five American English diphthongs are investigated by age and gender. Specifically, diphthong durations, the fundamental frequency (F0), and the first three formant (F1, F2, F3) trajectories as well as formant transition rates are analyzed as a function of age, gender and diphthong type. In addition, the distance between diphthong onset and offset positions and those of nearby monophthongs in the formant space is computed and age-dependent trends are presented. Furthermore, a spectral transition mid-point is estimated for a given diphthong trajectory and normalized time durations from onsets to mid-points are analyzed as a function of age and diphthong type. Finally, diphthong classification results using formant-related parameters are reported. Results show the expected age-dependent reductions of diphthong duration, fundamental frequency, onset and offset formant values, and formant transition rate. More interestingly, it is evident that speakers adjust onset and offset positions of diphthongs with respect to monophthongs as a function of age. Normalized duration of the first demisyllable segment is found to be different among diphthongs and that younger children spend more time in the first segment. The implications for diphthong development and the onset-offset definition of diphthongs are discussed in detail." @default.
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- W2085041337 date "2014-10-01" @default.
- W2085041337 modified "2023-09-28" @default.
- W2085041337 title "Developmental acoustic study of American English diphthongs" @default.
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- W2085041337 doi "https://doi.org/10.1121/1.4894799" @default.
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