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. 2014 Jul 31;10(7):e1003743. doi: 10.1371/journal.pcbi.1003743

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© 2014 Schwartz, Savariaux

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Blue arrows: lip events. Green arrows: intensity events. Red arrows: formant events. CAF/OAF (red): Closing/Opening onset for Audio Formant. CAI/OAI (green): Closing/Opening onset for Audio Intensity. CVL/OVL (blue): Closing/Opening onset for Visible Lips.