The NAVE_ Design and Implementation of a 3D Audio System for a

Document Sample
The NAVE_ Design and Implementation of a 3D Audio System for a Powered By Docstoc
					The NAVE: Design and Implementation of a 3D Audio
 System for a Low Cost Spatially Immersive Display
                                     Jeff Wilson and Jarrell Pair
                                 jwilson@cc.gatech.edu, jarrell@acm.org
                                       Virtual Environments Group
                               Graphics, Visualization, and Usability Center
                                          College of Computing
                                      Georgia Institute of Technology
                                      Atlanta, GA 30313-0280, USA
ABSTRACT
The NAVE is a low cost spatially immersive display system developed by the Georgia Tech Virtual
Environments Group. The NAVE audio environment uses two independent speaker systems driven by a
dedicated audio PC with two sound cards. The speakers are amplified by four Pioneer 200 watt receivers.
The primary system utilizes 4 Bose Acoustimass speakers to create a three dimensional soundfield. A
Sound Blaster LIVE! audio card is used for audio spatialization. The secondary system steers bass audio
content across four zones embedded in the NAVE floor. Bass audio is moved within the zones using a
Diamond Monster Sound MX200 PC sound card. Bass vibration effects are maximized by six Aura Bass
Shaker Pro's along with seat mounted subwoofer speakers. The steerable bass audio system can be used to
create audio-tactile effects for simulating the vibration of vehicles, thunder, explosions, shockwaves, and
earthquakes.
A custom real-time audio effects application programming interface (API) allows virtual environment
designers to attach sounds to graphic entities. The spatial position of sounds are synchronized with the
position of their associated graphical objects. The API is also capable of reproducing real world phenomena
including reverberation and doppler effects.
Keywords
3D audio, spatial audio, virtual environments, large screen display

				
DOCUMENT INFO
Shared By:
Tags: audio, system
Stats:
views:25
posted:3/12/2011
language:English
pages:1
Description: audio system is a variety of audio equipment in one or a combination of a variety of audio equipment stereo playback system. Also known as the Music Center. By the audio signal source, amplifier and speakers and other components, has received, recorded, released, sing function. A desktop hi-fi component systems, stand-alone hi-fi component systems, and floor-3 form.