WIT Press


Acoustical Wave Propagator Method For Two-dimensional Sound Propagation

Price

Free (open access)

Paper DOI

10.2495/AC030361

Volume

69

Pages

10

Published

2003

Size

531.54 kb

Author(s)

H. M. Sun, J. B. Wang & J. Pan

Abstract

Acoustical Wave Propagator method for twodimensional sound propagation H. M. Sun, J. B. Wang & J. Pan School of Mechanical Engineering, The University of Western Australia, Australia. Abstract In this paper, the Acoustical Wave Propagator (AWP) method is used to predict sound propagation in two dimensional room. The Chebyshev polynomial expansion scheme is applied to approximate the exponential wave propagator and Fast Fourier transform method is used to evaluate the spatial derivatives. The fi-ee field prediction using AWP is compared with exact solutions for accuracy assessment. Various rooms are used to demonstrate the capacity of AWP in modelling transient sound propagation. 1 Introduction The study of room acoustics in an enclosure is important. The sound quality of a room is often determined by the early decay time and reverberation. The accurate prediction of sound distribution would be extremely useful for rooms with specific acoustic requirement such as concert halls and provide valu

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