Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13951
Title: Diffraction of sound from a dipole source near to a barrier or an impedance discontinuity
Authors: Buret, M
Li, KM
Attenborough, K
Issue Date: 2003
Source: Journal of the Acoustical Society of America, 2003, v. 113, no. 5, p. 2480-2494
Abstract: Pierce's formulation for the diffraction of spherical waves by a hard wedge has been extended to the case of the sound field due to a dipole source. The same approach is also used to extend a semiempirical model for sound propagation above an impedance discontinuity due to a dipole source. The resulting formulas have been validated by comparing their numerical solutions with that computed by summing the sound fields due to two closely spaced monopole sources of equal magnitude but opposite in phase. These new formulations are then used to develop a simple model for calculating the dipole sound field diffracted by a barrier above an impedance ground. Applications of these models relate to transportation noise prediction, particularly railway noise abatement, for which dipole sources are commonly used. The numerical predictions have been found to compare reasonably well with indoor measurements using piezoceramic transducers as dipole sources.
Publisher: Acoustical Society of America
Journal: Journal of the Acoustical Society of America 
ISSN: 0001-4966
EISSN: 1520-8524
DOI: 10.1121/1.1566977
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

10
Last Week
0
Last month
0
Citations as of Sep 2, 2020

WEB OF SCIENCETM
Citations

8
Last Week
0
Last month
0
Citations as of Sep 24, 2020

Page view(s)

117
Last Week
0
Last month
Citations as of Sep 20, 2020

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.