Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/15939
Title: An analytical model to estimate the performance of an indoor barrier at low-medium frequencies
Authors: Chu, YJ
Mak, CM 
Qiu, XJ
Keywords: Coupled-room
Indoor barrier
Low-medium frequency
Issue Date: 2008
Publisher: Pergamon Press
Source: Applied acoustics, 2008, v. 69, no. 12, p. 1343-1349 How to cite?
Journal: Applied acoustics 
Abstract: Indoor barriers are now widely used for sound insulation. This paper examines the performance of indoor barriers in the low-medium frequency range and analyses the interaction between different natural modes of a room-barrier-room system. Morse proposed a theoretical model to calculate the sound field in a coupled-room, but this model neglects the surface integral of the boundary values of sound pressure. To estimate the performance of a barrier in an indoor environment, an analytical model is proposed that modifies the Green's function for a non-rigid boundary enclosure and approximates the surface integral by a pre-estimated sound pressure based on Morse's model. An additional approximation has been made in the proposed model to neglect the coupling area in the calculation of the surface integral. The proposed model used to predict the insertion loss of the barrier is verified by the experimental results using a 1:5 scale model. The predicted results agree well with the measured results at lower frequencies.
URI: http://hdl.handle.net/10397/15939
ISSN: 0003-682X
EISSN: 1872-910X
DOI: 10.1016/j.apacoust.2007.08.009
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