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Audio based group conversation support system

In a group conversation, there is always a passive participant who rarely express his/her opinion. Although the various visual based group conversation support system have been proposed to increase the passive participant's utterance, these visually presentation of support information is disturbing the group communication by attracting participants' gaze attention. In this research, we proposed an audio based support system which focuses on an attentional behavior. Our system gives a passive participant a chance to take next speaking turn by leading a mutual gaze with a current speaker with providing audio stimuli to them. Evaluation results showed that the amount of the passive participant's utterance increased and the proposed system can sufficiently achieve our purpose without disturbing communication signals.