Duplex narrowcasting operations for multipresent groupware avatars on mobile devices

Authors:
Michael Cohen;Owen Noel Newton Fernando;Uresh Chanaka Duminduwardena;Makoto Kawaguchi
Affiliations:
Spatial Media Group, University of Aizu, Aizu-Wakamatsu, Fukushima, 965-8580, Japan.;Spatial Media Group, University of Aizu, Aizu-Wakamatsu, Fukushima, 965-8580, Japan.;Spatial Media Group, University of Aizu, Aizu-Wakamatsu, Fukushima, 965-8580, Japan.;Spatial Media Group, University of Aizu, Aizu-Wakamatsu, Fukushima, 965-8580, Japan
Venue:
International Journal of Wireless and Mobile Computing
Year:
2009

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Abstract

The apparent paradoxes of multipresence, having avatars in multiple places simultaneously, are resolvable by an 'autofocus' feature, which uses reciprocity to project overlaid soundscapes and simulate the precedence effect to consolidate the display. We have developed an interface for narrowcasting functions for networked mobile devices deployed in a Collaborative Virtual Environment. Featuring multiple icons in a '2.5D' application, the interface can be used to control motion, sensitivity, and audibility of avatars in a teleconference. The interface is integrated with other clients through a 'servent' (server/client hybrid) HTTP TCP/IP bridge, interoperating with a heterogeneous groupware suite including stereographic panoramic browsers and spatial audio backends and speaker arrays.