 |
Abstract: A Virtual Reality Sound System Using Room-Related
Transfer Functions Delivered Through a Multispeaker Array: the
PSFC at the University of Aizu Multimedia Center
Katsumi Amano, Fumio Matsushita, Hirofumi Yanagawa,
Michael Cohen, Jens Herder, William Martens,
Yoshiharu Koba, and Mikio Tohyama.
A Virtual Reality Sound System Using Room-Related
Transfer Functions Delivered Through a Multispeaker Array: the
PSFC at the University of Aizu Multimedia Center, TVRSJ:
Trans. of the Virtual
Reality Society of
Japan, Vol. 3, No. 1, pp. 1-12, March 1998.
The PSFC, or Pioneer Sound Field Controller,
is a DSP-driven hemispherical loudspeaker array,
installed at the University of Aizu
Multimedia Center.
The PSFC features realtime manipulation of the primary components
of sound spatialization
for each of two audio sources located
in a virtual environment,
including the content (apparent direction and distance)
and context (room characteristics: reverberation level, room size and liveness).
In an alternate mode, it can also direct the destination of the two
separate input signals across 14 loudspeakers, manipulating
the direction of the virtual sound sources with no control over
apparent distance other than that afforded by source loudness
(including no simulated environmental reflections or reverberation).
The PSFC speaker dome is about 10 m in diameter,
accommodating about fifty simultaneous users,
including about twenty users comfortably standing or sitting near its
``sweet spot,''
the area in which the
illusions of sound spatialization are most vivid.
Collocated with a
large screen
rear-projection stereographic display,
the PSFC is intended for advanced multimedia and virtual reality applications.
Keywords:
audio signal processing, audio telecommunications, auralization, calm
technology, directional mixing console, multichannel sound
reproduction, room-related transfer functions, roomware, sound
localization, virtual conferencing environment
|
|
