Determination of effective parameters of acoustic fabrics including sensitivity study

Weiyun Liu, Jiazhu Li, D. W. Herrin

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The sound absorption coefficient and transmission loss of different sound absorbing fabrics are measured and it is shown that the fabric may be modeled using the equation commonly used for microperforated panels. Normal incident sound absorption can be measured with a given depth, and then an effective perforation diameter and perforation rate can be determined via a least squares curve fit. Inclusion of the fabric mass in the calculations is optional in the four cases considered. A sensitivity study is performed, and it can be concluded that determination of effective parameters via curve fit has advantages especially when perforation diameter or perforation rate is small. The results of the sensitivity study are also relevant to many commercially available microperforated sound absorbers. It is demonstrated that the effective parameters can be used to predict the real and imaginary parts of transfer impedance for use in simulation models. In addition, effective parameters can be used to predict the sound absorptive performance for different cavity depths and at higher and lower frequencies. Moreover, the transmission loss through a single layer or multiple layers of fabric can be determined.

Original languageEnglish
Article number108146
JournalApplied Acoustics
StatePublished - Oct 2021

Bibliographical note

Publisher Copyright:
© 2021 Elsevier Ltd


  • Acoustic fabrics
  • Curve Fit
  • Microperforated panels
  • Sensitivity analysis
  • Sound absorption
  • Transmission loss

ASJC Scopus subject areas

  • Acoustics and Ultrasonics


Dive into the research topics of 'Determination of effective parameters of acoustic fabrics including sensitivity study'. Together they form a unique fingerprint.

Cite this