文档介绍：Real-Time Acoustic Modeling for Distributed Virtual Environments
Thomas Funkhouser Patrick Min Ingrid Carlbom
Princeton University Princeton University Bell Laboratories
Abstract real-time on every participating user’puter. Sound waves orig-
inating at a source location travel through the environment along a
Realistic acoustic modeling is essential for spatializing sound in multitude of reverberation paths, representing different sequences
distributed virtual environments where worked users of reflections, transmissions, and diffractions. The different arrival
move around and interact visually and aurally in a shared vir- times and amplitudes of sound waves traveling along these paths
tual world. Unfortunately, current methods puting accurate provide important auditory cues for localization of objects, separa-
acoustical models are not fast enough for real-time auralization of tion of simultaneous speakers (., the “cocktail party effect”), and
sounds for simultaneously moving sources and receivers. In this pa- sense of presence in a virtual environment [11].
per, we present three new beam tracing algorithms that greatly ac- The goal of our work is to build a DVE system in which mul-
putation of reverberation paths in a distributed virtual tiple users municate with each other in a 3D virtual world
environment by taking advantage of the fact that sounds can only