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Design and evaluation of an impact noise laboratory
Luleå tekniska universitet.
1994 (English)In: Applied Acoustics, ISSN 0003-682X, E-ISSN 1872-910X, Vol. 42, no 1, p. 75-84Article in journal (Refereed) Published
Abstract [en]

An acoustic laboratory has been constructed in order to measure sound transmission through floors. It has been erected inside an existing building. Apart from the costs being considerably less than if a new building had been constructed, this has meant that several other advantages have been obtained. The design and location of the laboratory have been partially governed by activities already existing in the building. This article presents the construction from the point of view of building technique and of acoustics. In an effort to eliminate flank transmission in the frequency range 100–3150 Hz the construction has been dimensioned with vibration dampers having a natural frequency fo = 10 Hz. For the same reason and in order to increase the sound insulation the walls and ceiling have been lined with radiation reducing material. Comparative calculations and measurements have been carried out which show how the results have been affected by this procedure. The radiated effect from the various surfaces is shown in the form of graphs. The ratios of the receiving room dimensions are chosen so that the natural frequencies in the low-frequency region 100, 125 and 160 Hz are spaced fairly uniformly Despite the economic limitations and a limited amount of space the laboratory meets the requirement set by the International Standards ISO 140 with a good margin.

Place, publisher, year, edition, pages
1994. Vol. 42, no 1, p. 75-84
National Category
Fluid Mechanics and Acoustics
Research subject
Engineering Acoustics
Identifiers
URN: urn:nbn:se:ltu:diva-10582DOI: 10.1016/0003-682X(94)90125-2ISI: A1994NB15300006Scopus ID: 2-s2.0-0028336334Local ID: 9677a5f0-6fe1-11db-962b-000ea68e967bOAI: oai:DiVA.org:ltu-10582DiVA, id: diva2:983527
Note
Godkänd; 1994; 20060928 (biem)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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