Approximate method for obtaining source quantities for calculation of structure-borne sound transmission into lightweight buildings

Gibbs, BM ORCID: 0000-0002-5146-8215 and Mayr, AR (2016) Approximate method for obtaining source quantities for calculation of structure-borne sound transmission into lightweight buildings. Applied Acoustics, 110. pp. 81-90.

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Abstract

An approximate approach is described, for obtaining the source quantities required for the calculation of structure-borne sound power from machines into supporting lightweight building elements. The approach is in two stages, which are based on existing international Standards for measurement. The first stage involves direct measurement of the source free velocity at each contact, to give the sum of the square velocities. The second stage is based on the reception plate method and yields the single equivalent blocked force, which approximates the sum of the square blocked forces. The applicability of the source data obtained has been investigated in a case study of a fan unit on a timber joist floor. The approach contains several significant simplifying assumptions and the uncertainties associated with them are considered. For the case considered, the power transmitted into the floor is estimated by the approximate method to within 5 dB of the true value, on average.

Item Type:	Article
Uncontrolled Keywords:	building acoustics, structure-borne aound, reception plate method
Depositing User:	Symplectic Admin
Date Deposited:	27 Apr 2016 13:10
Last Modified:	19 Jan 2023 07:37
DOI:	10.1016/j.apacoust.2016.03.024
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3000960