Publication detail

Optimized method for Helmholtz resonator design formed by perforated boards

JUN, D. NESPĚŠNÝ, O. PĚNČÍK, J. FIŠAROVÁ, Z. RUBINA, A.

Original Title

Optimized method for Helmholtz resonator design formed by perforated boards

Type

journal article in Web of Science

Language

English

Original Abstract

The article focuses on an optimized method for Helmholtz resonators (HR) design to be used in room acoustics. They are resonators in the form of acoustic wall facings and ceilings formed by perforated boards with circular apertures. In order to verify available calculation methods for sound absorption coefficient, an experiment was performed in a reverberation room. Several variants of the internal absorbent and internal arrangement of the HR cavity for the experiment were measured. The measured data were compared with two available methods of sound absorption coefficient calculation for normal incidence using a 1D transfer matrix and electro-acoustic analogy. The calculation optimization was performed with the use of the measured data with the aim to reach better conformity of calculated courses of the sound absorption coefficient and the reverberation room measurements. (C) 2021 Elsevier Ltd. All rights reserved.

Keywords

Helmholtz resonator; Transfer matrix; Electro-acoustic analogy; Room acoustics; Sound absorption coefficient; Reverberation room

Authors

JUN, D.; NESPĚŠNÝ, O.; PĚNČÍK, J.; FIŠAROVÁ, Z.; RUBINA, A.

Released

18. 8. 2021

Publisher

ELSEVIER SCI LTD

Location

OXFORD

ISBN

0003-682X

Periodical

APPLIED ACOUSTICS

Year of study

184

Number

108341

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

11

Pages count

11

URL

https://doi.org/10.1016/j.apacoust.2021.108341

BibTex

@article{BUT171238,
  author="David {Jun} and Ondřej {Nespěšný} and Jan {Pěnčík} and Zuzana {Fišarová} and Aleš {Rubina}",
  title="Optimized method for Helmholtz resonator design formed by perforated boards",
  journal="APPLIED ACOUSTICS",
  year="2021",
  volume="184",
  number="108341",
  pages="1--11",
  doi="10.1016/j.apacoust.2021.108341",
  issn="0003-682X",
  url="https://doi.org/10.1016/j.apacoust.2021.108341"
}