Publication result detail

Lumped Parameter Method for Prediction of Sound Absorption Coefficient of Loudspeaker Placed in Closed Enclosure.

SKVARIL, Š.

Original Title

Lumped Parameter Method for Prediction of Sound Absorption Coefficient of Loudspeaker Placed in Closed Enclosure.

English Title

Lumped Parameter Method for Prediction of Sound Absorption Coefficient of Loudspeaker Placed in Closed Enclosure.

Type

Paper in proceedings outside WoS and Scopus

Original Abstract

This paper presents a comparative analysis of a theoretical lumped parameter model used to compute the acoustic impedance of a loudspeaker membrane, which acts as a low-frequency absorber. The study aims to validate the theoretical predictions by examining the system’s mechanical and acoustic parameters. The influence of membrane compliance, mass, and damping on acoustic impedance is explored. Additionally, an impedance tube measurement setup is used to experimentally verify the theoretical results. The methodology, measurement procedure, and laboratory setup are described in detail. Results indicate that the lumped parameter approach provides a reliable estimation for specific frequency ranges, with deviations attributed to structural and material non-idealities.

English abstract

This paper presents a comparative analysis of a theoretical lumped parameter model used to compute the acoustic impedance of a loudspeaker membrane, which acts as a low-frequency absorber. The study aims to validate the theoretical predictions by examining the system’s mechanical and acoustic parameters. The influence of membrane compliance, mass, and damping on acoustic impedance is explored. Additionally, an impedance tube measurement setup is used to experimentally verify the theoretical results. The methodology, measurement procedure, and laboratory setup are described in detail. Results indicate that the lumped parameter approach provides a reliable estimation for specific frequency ranges, with deviations attributed to structural and material non-idealities.

Keywords

Sound waves; acoustic impedance; acoustics; resonator; sound absorption

Key words in English

Sound waves; acoustic impedance; acoustics; resonator; sound absorption

Authors

SKVARIL, Š.

Released

28.08.2025

Publisher

Brno University of Technology, Faculty of Electrical Engineering and Communication

Location

Brno

ISBN

978-80-214-6153-6

Book

Proceedings I of the 31th Student EEICT 2025 (General Papers)

Pages count

5

URL

https://www.eeict.cz/eeict_download/archiv/sborniky

BibTex

@inproceedings{BUT198174,
  author="Šimon {Skvaril}",
  title="Lumped Parameter Method for Prediction of Sound Absorption Coefficient of Loudspeaker Placed in Closed Enclosure.",
  booktitle="Proceedings I of the 31th Student EEICT 2025 (General Papers)",
  year="2025",
  number="1",
  pages="5",
  publisher="Brno University of Technology, Faculty of Electrical Engineering and Communication",
  address="Brno",
  isbn="978-80-214-6153-6",
  url="https://www.eeict.cz/eeict_download/archiv/sborniky"
}