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Noise control for quality of life. Some considerations about the "element attenuation" (Project AH+, Part 1).

In building acoustics, the classical measurement of the velocity level difference for quantification of the vibration attenuation through a junction is, in the case of lightweight construction, typically overestimated. The main reason is the extra attenuation with distance due to the high damping. This attenuation of the velocity level per meter is called the element attenuation. It depends on all attenuation effects such as the damping, the panel size, the spacing of the joists, wave conversion at each butt joint and the presence of absorption material in the cavity. This article explains on how to take into account the element attenuations in the prediction of the junction attenuation and discusses several measurement results of different types of lightweight walls.


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