A Study on Multimodal Behaviour of Plate Absorbers

Publikation: Beitrag in Buch/Konferenzbericht/Sammelband/GutachtenBeitrag in KonferenzbandBeigetragen


Membrane absorbers, which are commonly used types of resonance absorbers, convert sound energy into thermal energy by exploiting vibrations that occur on oscillating panels. Those types of absorbers are generally tuned to be efficient in a very narrow frequency range. However, if plates are used as the front panel, it is possible to broaden the effective absorbing frequency bandwidth by exciting multiple modes. This study is devoted to investigating the multimodal behaviour of plate absorbers with closed back volumes in low-frequency range. In the numerical part of the study, the box-shaped plate absorbers are modelled using a combined BEM/FEM approach. The results are validated with measurements conducted in an anechoic chamber. In addition, the sound absorption characteristics of the plate absorbers are obtained from an experimental study conducted in a reverberation chamber. The obtained results reveal that the plate absorbers can be effective in wider frequency ranges.


Titel51st International Congress and Exposition on Noise Control Engineering (INTER-NOISE 2022)
Herausgeber (Verlag)Institute of Acoustics (IOA)
ISBN (Print)9781713863601
PublikationsstatusVeröffentlicht - 2022


ReiheProceedings of the Institute of Acoustics : contributed papers


Titel51st International Congress and Exposition on Noise Control Engineering, Internoise 2022
Dauer21 - 24 August 2022
LandGroßbritannien/Vereinigtes Königreich

Externe IDs

ORCID /0000-0001-7244-3503/work/142240996
ORCID /0000-0002-0803-8818/work/142257152


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