Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
In-situ Measurements of Surface Reflection Properties
In order to characterize surfaces with respect to their sound reflecting properties, the absorption and the scattering or diffusion coefficient can currently be measured under standardized laboratory conditions. However, it is questionable whether the data from measurements performed under such laboratory conditions can be used to accurately model the actual sound field in rooms. Additionally, it is not always possible to obtain a transportable sample of a material.
In-situ measurement methods can overcome these shortcomings, as they measure the desired quantities at the location where the material is installed. For this purpose, a portable setup was built that allows for a complete hemispherical measurement of the sound pressure distribution using less than 30 sensors. This contribution will present the setup together with the challenges for post-processing of the acquired data. First measurement results will be presented and discussed.
In-situ Measurements of Surface Reflection Properties
In order to characterize surfaces with respect to their sound reflecting properties, the absorption and the scattering or diffusion coefficient can currently be measured under standardized laboratory conditions. However, it is questionable whether the data from measurements performed under such laboratory conditions can be used to accurately model the actual sound field in rooms. Additionally, it is not always possible to obtain a transportable sample of a material.
In-situ measurement methods can overcome these shortcomings, as they measure the desired quantities at the location where the material is installed. For this purpose, a portable setup was built that allows for a complete hemispherical measurement of the sound pressure distribution using less than 30 sensors. This contribution will present the setup together with the challenges for post-processing of the acquired data. First measurement results will be presented and discussed.
In-situ Measurements of Surface Reflection Properties
Müller-Trapet, Markus (Autor:in) / Vorländer, Michael (Autor:in)
Building Acoustics ; 21 ; 167-174
01.06.2014
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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