Opens in a new tab

AES E-Library

← Back to search

Convention Paper

Simple Room Acoustic Analysis Using a 2.5 Dimensional Approach

Authors: Macey, Patrick

AES Convention 130 · Paper 8443 · May 2011

Abstract

Cavity modes of a finite bounded region with rigid boundaries can be used to compute the steady state harmonic response for excitation of an acoustic cavity by a point source. In Cuboid domains, with analytical modes, this is straightforward. For more general regions, determining a set of orthonormal modes is more difficult. The finite element method could be used for arbitrary 3D regions.The current work investigates a hybrid numerical/analytical method, applicable to rooms of constant height, but arbitrary cross section. A 2D FE analysis is used to compute the cross-section modes/frequencies. 3D modes are constructed as an outer product of the cross section modes and 1D modes for the height. Comparison is made with BEM computations.

Details

Published in
AES Convention 130
AES Convention
130
Paper number
8443
Publication date
May 6, 2011
Session subject
Posters: Room Acoutsics
Affiliation
PACSYS Limited, Notingham, UK (See document for exact affiliation information.)
Type
Convention Paper