A study of 2D and 3D barrier insertion loss using improved diffraction-based methods

Lam recently introduced an improved diffraction-based method for calculating the insertion loss of a single, finite length, three-dimensional barrier ( Applied Acoustics, 42, 29–40). Comparisons of this new method with experimental scale modeling and the wave-based boundary element method showed goo...

Full description

Saved in:
Bibliographic Details
Published in:Applied acoustics 1998, Vol.53 (1), p.49-75
Main Authors: Muradali, A., Fyfe, K.R.
Format: Article
Language:English
Subjects:
Acoustics
Aeroacoustics, atmospheric sound
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Lam recently introduced an improved diffraction-based method for calculating the insertion loss of a single, finite length, three-dimensional barrier ( Applied Acoustics, 42, 29–40). Comparisons of this new method with experimental scale modeling and the wave-based boundary element method showed good agreements over a broad frequency range. This preliminary work of Lam is extended in this paper to include the modeling of two dimensional geometries, the comparison of two- and three-dimensional modeling, the consideration of parallel barriers, modeling the effect of finite ground impedance and the consideration of three-dimensional coherent and incoherent line sources. Results of these developed modeling methods compare well with both boundary element and finite element modeling.
ISSN:0003-682X
1872-910X
DOI:10.1016/S0003-682X(97)00040-6