Journal
PSYCHOLOGICAL SCIENCE
Volume 15, Issue 2, Pages 133-137Publisher
SAGE PUBLICATIONS INC
DOI: 10.1111/j.0963-7214.2004.01502010.x
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Funding
- NIDCD NIH HHS [DC05774] Funding Source: Medline
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People naturally move their heads when they speak, and our study shows that this rhythmic head motion conveys linguistic information. Three-dimensional head and face motion and the acoustics of a talker producing Japanese sentences were recorded and analyzed. The head movement correlated strongly with the pitch (fundamental frequency) and amplitude of the talker's voice. In a perception study, Japanese subjects viewed realistic talking-head animations based on these movement recordings in a speech-in-noise task. The animations allowed the head motion to be manipulated without changing other characteristics of the visual or acoustic speech. Subjects correctly identified more syllables when natural head motion was present in the animation than when it was eliminated ordistorted. These results suggest that nonverbal gestures suchas head movements play a more direct role in the perception of speech than previously known.
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