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Low frequency airborne sound transmission

Magalhaes, M.D.C. and Ferguson, N.S., (2001) Low frequency airborne sound transmission Boone, R. (ed.) In Proceedings of the 2001 International Congress and Exhibition on Noise Control Engineering. Inter-noise 01., pp. 1111-1114.

Record type: Conference or Workshop Item (Paper)


This study focuses on the improvement in the understanding of airborne noise transmission phenomenon in buildings, at low frequencies, under conditions of different architectural configurations. The effects of low-frequency noise have been of a particular concern because many kinds of structures have been inefficient in attenuating low-frequency noise, compared to other frequency components. Likewise the Sound Reduction Index is normally measured under diffuse field conditions and these calculations show that, at low frequencies, this is not the case. An acousticstructural coupled room-plate-room model, which allows variations in room size and shape, and partition properties to be considered, has been formulated and solved. Results of a parametric study show the effect of several configurations for a flexible partition (different geometric size and position in the common wall) and connected rooms (size and absorbing walls) on the Sound Reduction Index by averaging over 1/3 octave bands. Finally, a general discussion, based on the findings of the results obtained, is presented.

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Published date: August 2001
Venue - Dates: International Congress and Exhibition on Noise Control Engineering, 2001-08-27 - 2001-08-30


Local EPrints ID: 57879
PURE UUID: b942d309-ce13-48f5-b5da-c1702ac9d382
ORCID for N.S. Ferguson: ORCID iD

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Date deposited: 13 Aug 2008
Last modified: 17 Jul 2017 14:28

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Author: M.D.C. Magalhaes
Author: N.S. Ferguson ORCID iD
Editor: R. Boone

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