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Acoustic Bulletin

Room acoustics blog

absorption coefficient

New experimental methods shed light on sound field diffusion in reverberation chambers.

2019-03-10 by Mai-Britt Beldam

Sound energy flow reconstructed in the vicinity of an absorbing sample in a standardized (ISO 354:2003) reverberation chamber. The energy is predominantly flowing towards the absorber. Tangential flows can also be detected, due to the interaction between waves propagating from the source and other reflections of considerable amplitude (adapted from Nolan et al., 2019).

December 13th 2018 we had the privilege to attend a PhD defense at DTU. The work was done by Mélanie Nolan who for the last 3 years has been working intensely to investigate sound fields in the reverberation chamber. This article is touching upon some of the findings from the research. The influence of absorption […]

European Directive bans excessive reverberant noise

2006-09-04 by Pierre Chigot

The European Directive on Construction Protection against noise applies to all buildings occupied by people. A specific paragraph addresses Reverberant Noise and how to handle it. Intesting is the use of equivalent absorption area. extract from the Directive below: Protection against excessive reverberant noise “The noise within a room is a function, on the one […]

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