Effect of speaking rate on the formant dynamics of triphthongs

CAO Honglin; WANG Yujing; LI Jingyang

doi:10.16511/j.cnki.qhdxxb.2017.26.047

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Journal of Tsinghua University(Science and Technology) ›› 2017, Vol. 57 ›› Issue (9) : 958-962. DOI: 10.16511/j.cnki.qhdxxb.2017.26.047

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Effect of speaking rate on the formant dynamics of triphthongs

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Abstract

This study investigates the individual differences in the formant dynamics for four Chinese triphthongs/iau/,/iou/,/uai/and/uei/produced by thirty male subjects aged 18 to 28 years old at three different speaking rates (fast/normal/slow). The formant dynamics are described by cubic polynomial fits. The objective is to be able to discriminate between different speakers. The results show that the discriminant abilities vary for different speaking rates. Specifically, the fast speech has the best discrimination (76.7%), followed by the normal (69.5%) and slow (70.3%) speech. The triphthong discrimination ability decreases when the speaking speeds are differ, with "fast + slow" speeds giving the worst discrimination (48.0%). In all cases,/iau/more easily identifies different speakers than the other three triphthongs. Therefore, the formant dynamics of triphthongs with the same or similar speaking rates can be used to more easily distinguish different speakers.

Key words

triphthong / formant dynamics / polynomial fitting / discriminant analysis / speaking rate

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CAO Honglin, WANG Yujing, LI Jingyang. Effect of speaking rate on the formant dynamics of triphthongs[J]. Journal of Tsinghua University(Science and Technology). 2017, 57(9): 958-962 https://doi.org/10.16511/j.cnki.qhdxxb.2017.26.047

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