
366 Coverbal Synchrony in Human-Machine Interaction
human’s skeleton. However, one of the diffi culties of using this method
is that the audio of the utterance in combination with the associated
facial movements must be synchronized with the body animation. In
other words, the body movement, facial movement and audio track must
be synchronized together exactly as they were captured. This means
capturing the facial animation performance at the same time as the body
movement (Stone et al., 2004), which typically requires three different
capture systems: a motion capture system for the body, a separate one
for the face, and a third audio captur ...