Predicting the effects of labial coarticulation is an important aspect with a view to developing an artificial talking head. This paper describes a concatenation approach that uses sigmoids to represent the evolution of labial parameters. Labial parameters considered are lip aperture, protrusion, stretching and jaw aperture. A first formal algorithm determines the relevant transitions, i.e. those corresponding to phonemes imposing constraints on one of the labial parameters. Then relevant transitions are either retrieved or interpolated from a set of reference sigmoids which have been trained on a speaker specific corpus. This labial corpus is made up of isolated vowels, CV, VCV, VCCV and 100 sentences. A final stage consists in improving the overall syntagmatic consistency of the concatenation.
Cite as: Robert, V., Laprie, Y., Bonneau, A. (2007) A phonetic concatenative approach of labial coarticulation. Proc. Interspeech 2007, 1402-1405, doi: 10.21437/Interspeech.2007-26
@inproceedings{robert07_interspeech,
author={Vincent Robert and Yves Laprie and Anne Bonneau},
title={{A phonetic concatenative approach of labial coarticulation}},
year=2007,
booktitle={Proc. Interspeech 2007},
pages={1402--1405},
doi={10.21437/Interspeech.2007-26}
}