An Acoustic Study of Vowel Undershoot in a System with Several Degrees of Prominence

Janina Mołczanow, Beata Łukaszewicz, Anna Łukaszewicz


The paper presents the results of a pilot study investigating the relationship between vowel quality and duration in Ukrainian. In this language, lexical stress is cued by increased duration; smaller but systematic differences in length occur between unstressed, rhythmic stress-bearing, and pretonic syllables. The presence of several degrees of lengthening within one word makes it possible to test the long-established theories of vowel reduction posing a direct link between decreased duration and vowel undershoot. Overall, the analysis of the aggregated data collected from four native speakers of Ukrainian points to a strong correlation between decreasing duration and the undershoot of F1 targets. However, in separate by-position and by-speaker analyses, no correlation between F1 and duration is observed in the positions of rhythmic and lexical stress. We thus conclude that the stability of the F1 target vis-à-vis temporal parameters may constitute another parameter expressing metrical prominence. In addition, our data suggests that formant undershoot may be affected by an articulatory effort.


 DOI: 10.21437/Interspeech.2019-1806

Cite as: Mołczanow, J., Łukaszewicz, B., Łukaszewicz, A. (2019) An Acoustic Study of Vowel Undershoot in a System with Several Degrees of Prominence. Proc. Interspeech 2019, 1756-1760, DOI: 10.21437/Interspeech.2019-1806.


@inproceedings{Mołczanow2019,
  author={Janina Mołczanow and Beata Łukaszewicz and Anna Łukaszewicz},
  title={{An Acoustic Study of Vowel Undershoot in a System with Several Degrees of Prominence}},
  year=2019,
  booktitle={Proc. Interspeech 2019},
  pages={1756--1760},
  doi={10.21437/Interspeech.2019-1806},
  url={http://dx.doi.org/10.21437/Interspeech.2019-1806}
}