Multimodal analysis of the predictability of hand-gesture properties

• URL: http://arxiv.org/abs/2108.05762v1
• Date: Thu, 12 Aug 2021 14:16:00 GMT
• Title: Multimodal analysis of the predictability of hand-gesture properties
• Authors: Taras Kucherenko, Rajmund Nagy, Michael Neff, Hedvig Kjellstr\"om, Gustav Eje Henter
• Abstract summary: Embodied conversational agents benefit from being able to accompany their speech with gestures. We investigate which gesture properties can be predicted from speech text and/or audio using contemporary deep learning.
• Score: 10.332200713176768
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Embodied conversational agents benefit from being able to accompany their speech with gestures. Although many data-driven approaches to gesture generation have been proposed in recent years, it is still unclear whether such systems can consistently generate gestures that convey meaning. We investigate which gesture properties (phase, category, and semantics) can be predicted from speech text and/or audio using contemporary deep learning. In extensive experiments, we show that gesture properties related to gesture meaning (semantics and category) are predictable from text features (time-aligned BERT embeddings) alone, but not from prosodic audio features, while rhythm-related gesture properties (phase) on the other hand can be predicted from either audio, text (with word-level timing information), or both. These results are encouraging as they indicate that it is possible to equip an embodied agent with content-wise meaningful co-speech gestures using a machine-learning model.

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