Mediated Meeting Interaction for Teleconferencing

Abstract

A common problem with teleconferences is
awkward turn-taking – particularly ‘collisions,’
whereby multiple parties inadvertently speak over each
other due to communication delays. We propose a
model for teleconference discussions including the
effects of delays, and describe tools that can improve
the quality of those interactions. We describe an
interface to gently provide latency awareness, and to
give advanced notice of ‘incoming speech’ to help
participants avoid collisions. This is possible when
codec latencies are significant, or when a low
bandwidth side channel or out-of-band signaling is
available with lower latency than the primary video
channel. We report on results of simulations, and of
experiments carried out with transpacific meetings, that
demonstrate these tools can improve the quality of
teleconference discussions.