AES E-Library

Room Acoustics Using a 2.5 Dimensional Approach with Damping Included

Cavity modes of a finite bounded region with rigid boundaries can be used to compute the steady state harmonic response for point source excitation. In cuboid domains this is straightforward. In general regions, determining a set of orthonormal modes is more difficult. Previous work showed that for rooms of constant height, 3D modes can be computed from the cross section modes, and this used for a fast solution. This approach used modal damping. More realistic damping associated with wall areas could be included using a damped eigenvalue calculation of the cross section modes. This is restrictive on damping formulations. An alternative non-modal approach, using a trigonometric expansion through the height is proposed. This is still faster than 3D FEM.

Author: Macey, Patrick
Affiliation: PACSYS Limited, Nottingham, UK
AES Convention:131 (October 2011) Paper Number:8460 Import into BibTeX
Subject:Room Acoustics

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 131Papers)   /131/8460.pdf

Start a discussion about this paper!