Customized sound mitigation with micro-perforated panels

Sebastian Floss*, Manfred Kaltenbacher

*Korrespondierende/r Autor/in für diese Arbeit

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandBegutachtung

Abstract

Micro-perforated panels in combination with an air-tight cavity volume constitute the microperforated absorber (MPA), an alternative means in the category of sound absorbing (meta)materials. In contrast to the conventional porous and fibrous materials, the MPA does not mitigate sound in broad frequency range, but rather has to be customized to a specific noise frequency range. In this contribution, we show the influence of two types of MPP and various cavity setups on the absorption and reflection of the impinging sound power. Application examples demonstrate the advantages and disadvantages of using MPAs in room acoustic scanarios. The investigations found that the MPA's effectiveness strongly depends on the sound field characteristic and that the MPA setup influences the different portions (absorption, reflection and transmission) of the impinging sound wave differently.

Originalspracheenglisch
TitelProceedings of INTER-NOISE 2021 - 2021 International Congress and Exposition of Noise Control Engineering
Redakteure/-innenTyler Dare, Stuart Bolton, Patricia Davies, Yutong Xue, Gordon Ebbitt
Herausgeber (Verlag)The Institute of Noise Control Engineering of the USA, Inc.
ISBN (elektronisch)9781732598652
DOIs
PublikationsstatusVeröffentlicht - 2021
Veranstaltung50th International Congress and Exposition of Noise Control Engineering: INTER-NOISE 2021 - Washington DC, Washington, Virtual, USA / Vereinigte Staaten
Dauer: 1 Aug 20215 Aug 2021

Publikationsreihe

NameProceedings of INTER-NOISE 2021 - 2021 International Congress and Exposition of Noise Control Engineering

Konferenz

Konferenz50th International Congress and Exposition of Noise Control Engineering
LandUSA / Vereinigte Staaten
OrtWashington, Virtual
Zeitraum1/08/215/08/21

ASJC Scopus subject areas

  • Akustik und Ultraschall

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