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Convention Paper

The Differential Pressure Synthesis Method for Eastimating Acoustic Pressures on Human Heads

Authors: Tao, Yufei; Tew, Anthony I.; Porter, Stuart J.

AES Convention 112 · Paper 5594 · April 2002

Abstract

Differential pressure synthesis (DPS) estimates the free field acoustic pressure on the boundary of an object from its geometry. The DPS method pre-calculates a database of pressure changes caused by introducing orthogonal shape deformations to a template shape. Pressures on the object are synthesised by summing weighted pressure components from the database. Given an appropriate template, the accuracy of DPS approaches that of the proven boundary element method (BEM). Yet computationally its performance is much closer to that of simple spherical head approximations. Pressures are synthesised for a 2D shape and a 3D KEMAR head model and are compared with those from direct application of the BEM. Applications and constraints of DPS are discussed, including its potential for the rapid estimation of head-related transfer functions.

Details

Published in
AES Convention 112
AES Convention
112
Paper number
5594
Publication date
April 6, 2002
Session subject
Spatial Audio
Affiliation
Music Technology Research Group, Department of Electronics, University of York, Heslington, York, N. Yorkshire, UK (See document for exact affiliation information.)
Type
Convention Paper