« Multi-Context Voice Communication Controlled By Using An Auditory Virtual Space | Main | Computation of Spatialization and Reverberation For A Virtual "Sound Room" Based Communication-Medium Called voiscape »

Multi-Context Voice Communication In A SIP/SIMPLE-Based Shared Virtual Sound Room With Early Reflections

Kanada, Y., 15th ACM International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV 2005), pp. 45-50, June 2005, http://dx.doi.org/10.1145/1065983.1065996

[ 日本語のページ ]
[ Paper PDF file ] [ OHP PDF file ]

Abstract: An improved prototype of the "voiscape" voice communication medium has been developed and subjectively evaluated. Voiscape enables natural and seamless voice communication by using sound to create a virtual "sound room" in which people, who are represented by different sounds, can move freely. It features low-delay motion-tracking spatial audio with simulated early reflections that produce out-of-head sound localization and sound distance expression. It also features virtual-location-based selective communication: a user can walk freely in the sound room using a map- and cursor-key-based user-interface and can select whom to talk to or which sound sources to listen to. A third feature is SIP-presence-event-notification (SIMPLE)-based sound room management: when users move, their locations and directions are distributed using SIP SUBSCRIBE/NOTIFY messages. The combination of these features creates a natural voice-communication space in which two or more parallel conversation contexts can coexist. Limited, subjective testing by around 200 people showed that this medium can be used for cocktail-party-like conversation; i.e., users could distinguish parallel conversations by paying attention to or by moving toward one of them.

Introduction to this research theme: voiscape

Keywords: Conference room management, Early reflection, Motion tracking, Reverberation, SIMPLE, SIP, Session Initiation Protocol, Sound room management, voiscape, Virtual-motion tracking, Virtual communication space, Virtual communication place, Virtual space, Virtual place, Voice communication, Multi-voice conversation, Spatial audio, 3-D audio, 3D audio, 3-dimensional audio, Three-dimensional audio, Spatial sound, 3-D sound, 3D sound, 3-dimensional sound, Three-dimensional sound

Post a comment


This page contains a single entry from the blog posted on June 13, 2005 12:00 AM.

Many more can be found on the main index page or by looking through the archives.

(C) Copyright 2007 by Yasusi Kanada
Powered by
Movable Type 3.36