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13 - Electrical and Electronic Engineering, Metallurgy and Materials

Queen's University Belfast

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Article title

Modeling Frequency-Dependent Boundaries as Digital Impedance Filters in FDTD and K-DWM Room Acoustics Simulations

Type

D - Journal article

DOI

Title of journal

Journal of the Audio Engineering Society

Article number

Volume number

Issue number

7-8

First page of article

569

ISSN of journal

1549-4950

Year of publication

2008

URL

Number of additional authors

Additional information

This paper was the first to show how to formulate the boundary conditions necessary for finite-difference modelling of acoustic spaces with general frequency-dependent wall impedances. Contributions include a model - which unlike the ‘reflection filter’ approach that dominated up to 2008 - is consistent with theory and includes a tool to exactly predict the numerical error. These features transformed the applicability of FDTD techniques to acoustic problems. This innovation was hailed “a major step forward” in 2008 by the chair of the Audio Engineering Society (AES) Convention Policy (http://www.aes.org/press/?ID=9).

Interdisciplinary

Cross-referral requested

Research group

B - Digital Communications (Digi Comms)

Proposed double-weighted

Double-weighted statement

Reserve for a double-weighted output

Non-English

English abstract