4.7 Article

Characterisation of valves as sound sources: Fluid-borne sound

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APPLIED ACOUSTICS
卷 72, 期 7, 页码 428-436

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ELSEVIER SCI LTD
DOI: 10.1016/j.apacoust.2011.01.007

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Fluid-borne sound; Structure-borne sound; Valves; Prediction model

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The sound pressure level in receiving rooms, caused by taps at the ends of pipe systems, is considered. The structure-borne sound power, from the pipes to the supporting wall, was obtained from intensity measurement of the fluid-borne sound power of the tap. The fluid-borne sound power is combined with a ratio of structure-borne sound power to fluid-borne sound power, obtained from laboratory measurements of similar pipe assemblies. Alternatively, a reception plate method is proposed, which avoids the necessity for intensity measurements. The structure-borne power into walls, to which the pipe work is attached, provides input to the standard building propagation model, which yields the predicted sound pressure level in the adjacent room. (C) 2011 Elsevier Ltd. All rights reserved.

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