Detail publikačního výsledku

Optimized method for Helmholtz resonator design formed by perforated boards

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

Originální název

Optimized method for Helmholtz resonator design formed by perforated boards

Anglický název

Optimized method for Helmholtz resonator design formed by perforated boards

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Rok RIV

2022

Vydáno

18.08.2021

Nakladatel

ELSEVIER SCI LTD

Místo

OXFORD

ISSN

0003-682X

Periodikum

APPLIED ACOUSTICS

Svazek

184

Číslo

108341

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

11

Strany počet

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"
}