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Measured transmission functions from structure-borne sound sources in a timber-frame construction

  • The aim of prEN 15657-2 is to provide engineering methods to estimate the structure-borne sound power input from machinery in situations where the source mobility matches or is lower than the receiver mobility. This situation often affects lightweight constructions such as timber-frame buildings. To estimate the sound pressure level in a room that is adjacent or distant from the room containing the source, the installed structure-borne sound power has to be propagated across at least one junction in the timber-frame construction. However, at present there are no generic, validated calculation models due to the complexity and the large variety of timber-frame constructions. A simplified approach to investigate and compare the structure-borne sound transmission is to treat the framed construction as a black box and only consider one parameter, a transmission function which is the ratio of the sound pressure level in the receiving room to the injected structure-borne sound power level. To get information about the variation of this transmission function in different timber-frame constructions, measurements were made in both the laboratory and the field. Experimental results are presented showing the variation due to different building configurations and the effect of the excitation position on the transmission function.

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Metadaten
Author:Fabian Schöpfer, Carl Hopkins, Andreas R. Mayr, Ulrich Schanda
Parent Title (English):Proceedings of Euronoise 2015, Maastricht, Netherlands
Document Type:Conference Proceeding
Language:English
Publication Year:2015
Tag:Holzbau; Schallmesstechnik
faculties / departments:Fakultät für Angewandte Natur- und Geisteswissenschaften
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 60 Technik / 600 Technik, Technologie