Prediction of Sound Pressure Levels in Rooms Using EN 12354

Abstract

In residential and office buildings, service equipment can be annoying if it produces noise. To avoid noise, especially structure-borne noise, a prediction and calculation of sound power injected into the structure is necessary. For the prediction of sound pressure levels due to structure-borne sound sources in residential and office buildings the standard EN 12354 only provides little information regarding the characterization of a structure-borne sound source. Furthermore, there is little information about the uncertainties of the prediction itself. Especially for lightweight structures, when the mobilities of source and receiver could match, a practical method for the power prediction is missing. Nevertheless, they are necessary for an accurate sound pressure prediction. This paper focuses on the prediction of sound pressure levels in rooms due to structure-borne sound sources. Therefore, the characteristic source parameters were measured with the Two-stage reception plate method. With these source parameters, the sound pressure levels in a lightweight test facility were calculated and compared with measurements. Furthermore it will be referred, if the prediction method in EN 12354-5:2009 using TSM for source characterization is valid for the prediction of sound pressure levels due to structure-borne sound sources in light-weight constructions.