Time Lag Effects of Utterance to Communicative Actions on CG Character-Human Greeting Interaction

The timing involved in generating communicative actions and utterances in a face-to-face greeting interaction is analyzed by synthesis for application in CG character-human interaction support systems. First, an analysis by synthesis is performed by using an CG character system. This analysis confirms that the variation in the pause and the lag in the utterance to communicative actions produce different communicative effects, for example, a lag of about 0.3 s is desirable for a familiar greeting and a longer lag is appropriate for a polite greeting. These results demonstrate the effects of timing control on the utterances generated by electronic CG characters as well as physical robots, and the applicability of such interactions in advanced communications with robots and CG characters