REAL-TIME SIMULATION OF SOUND SOURCE OCCLUSION

Chris Share, Graham McAllister

Abstract

Sound source occlusion occurs when the direct path from a sound source to a listener is blocked by an intervening object. Currently, a variety of methods exist for modeling sound source occlusion. These include finite element and boundary element methods, as well as methods based on time-domain models of edge diffraction. At present, the high computational requirements of these methods precludes their use in real-time environments. In the case of real-time geometric room acoustic methods (e.g. the image method, ray tracing), the model of sound propagation employed makes it difficult to incorporate wave-related effects such as occlusion. As a result, these methods generally do not incorporate sound source occlusion. The lack of a suitable sound source occlusion method means that developers of real-time virtual environments (such as computer games) have generally either ignored this phenomenon or used rudimentary and perceptually implausible approximations. A potential solution to this problem is the use of shadow algorithms from computer graphics. These algorithms can provide a way to efficiently simulate sound source occlusion in real-time and in a physically plausible manner. Two simulation prototypes are presented, one for fixed-position sound sources and another for moving sound sources.

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Paper Citation


in Harvard Style

Share C. and McAllister G. (2006). REAL-TIME SIMULATION OF SOUND SOURCE OCCLUSION . In Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2006) ISBN 978-972-8865-64-1, pages 193-199. DOI: 10.5220/0001571501930199


in Bibtex Style

@conference{sigmap06,
author={Chris Share and Graham McAllister},
title={REAL-TIME SIMULATION OF SOUND SOURCE OCCLUSION},
booktitle={Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2006)},
year={2006},
pages={193-199},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001571501930199},
isbn={978-972-8865-64-1},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2006)
TI - REAL-TIME SIMULATION OF SOUND SOURCE OCCLUSION
SN - 978-972-8865-64-1
AU - Share C.
AU - McAllister G.
PY - 2006
SP - 193
EP - 199
DO - 10.5220/0001571501930199