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Convention Paper

Boundary Element Simulation of HRTFs and Sound Fields Produced by Virtual Acoustic Imaging Systems

Authors: Kahana, Yuvi; Nelson, Philip A.; Petyt, M.; Choi, Sunghoon

AES Convention 105 · Paper 4817 · September 1998

Abstract

The goal of using the Boundary Element Method (BEM) in this study is two-fold: to replicate a set of measured, individualized HRTFs by a computer simulation, and also to visualize the resultant sound field around the head. This paper presents the results of a preliminary study carried out on a KEMAR dummy-head, the geometry of which was captured with a high accuracy 3-D laser scanner and digitizer. The scanned computer model was converted to a few valid BEM meshes with different polygon resolutions, enabling us to optimize the simulation for different frequency ranges. The results show a good agreement between simulations and measurements of the sound pressure at the blocked ear-canal of the dummy-head up to the maximum frequency investigated-(6 kHz). Also presented are some examples of the resultant sound fields for virtual acoustic imaging systems.

Details

Published in
AES Convention 105
AES Convention
105
Paper number
4817
Publication date
September 6, 1998
Session subject
Spatial Perception and Processing
Affiliation
Institute of Sound & Vibration Research, University of Southampton, Highfield, UK ; Samsung, Suwon, Korea (See document for exact affiliation information.)
Type
Convention Paper